contains the status of the last executed command)
to see whether the command completed successfully.
A zero exit status is conventionally used to indicate success,
-and a nonzero status means that the command was unsuccessful.
+and a non-zero status means that the command was unsuccessful.
(Details of the exit status can be found in
.BR wait (2).)
-A nonzero exit status can be in the range 1 to 255, and some commands
-use different nonzero status values to indicate the reason why the
+A non-zero exit status can be in the range 1 to 255, and some commands
+use different non-zero status values to indicate the reason why the
command failed.
.SH NOTES
Linux is a flavor of Unix, and as a first approximation
Otherwise it is 127 if
.I command
could not be found, 126 if it could be found but could not be invoked,
-and some other nonzero value (1-125) if something else went wrong.
+and some other non-zero value (1-125) if something else went wrong.
.SH ENVIRONMENT
The variables
.BR LANG ,
.TP
.B EPERM
.I buf.mode
-is nonzero and the caller does not have sufficient privilege.
+is non-zero and the caller does not have sufficient privilege.
Under Linux the
.B CAP_SYS_TIME
capability is required.
.I pid
field of
.I hdrp
-when that is nonzero, or on the capabilities of the calling thread if
+when that is non-zero, or on the capabilities of the calling thread if
.I pid
is 0.
If
occur if a thread without this capability tried to change its
own capabilities by specifying the
.I pid
-field as a nonzero value (i.e., the value returned by
+field as a non-zero value (i.e., the value returned by
.BR getpid (2))
instead of 0.)
.TP
The following operations can be performed on the file descriptor:
.TP
.BR read (2)
-If the eventfd counter has a nonzero value, then a
+If the eventfd counter has a non-zero value, then a
.BR read (2)
returns 8 bytes containing that value,
and the counter's value is reset to zero.
.IP
If the counter is zero at the time of the
.BR read (2),
-then the call either blocks until the counter becomes nonzero,
+then the call either blocks until the counter becomes non-zero,
or fails with the error
.B EAGAIN
if the file descriptor has been made non-blocking
.SH ERRORS
.TP EINVAL
.I flags
-is nonzero.
+is non-zero.
.\" Eventually glibc may support some flags
.TP
.B EMFILE
.\" refers to a terminal device, then SIGIO
.\" signals are sent to the foreground process group of the terminal.
-If a nonzero value is given to
+If a non-zero value is given to
.B F_SETSIG
in a multi-threaded process running with a threading library
that supports thread groups (e.g., NPTL),
is available to the signal handler if installed with
.BR SA_SIGINFO .
-Additionally, passing a nonzero value to
+Additionally, passing a non-zero value to
.B F_SETSIG
changes the signal recipient from a whole process to a specific thread
within a process.
By using
.B F_SETSIG
-with a nonzero value, and setting
+with a non-zero value, and setting
.B SA_SIGINFO
for the
signal handler (see
.IR value .
If
.I ovalue
-is nonzero, the old value of the timer is stored there.
+is non-zero, the old value of the timer is stored there.
.LP
Timers decrement from
.I it_value
.I core
file.
When 0 no core dump files are created.
-When nonzero, larger dumps are truncated to this size.
+When non-zero, larger dumps are truncated to this size.
.TP
.B RLIMIT_CPU
CPU time limit in seconds.
.IR optval .
For
.BR setsockopt (),
-the parameter should be nonzero to enable a boolean option, or zero if the
+the parameter should be non-zero to enable a boolean option, or zero if the
option is to be disabled.
.PP
For a description of the available socket options see
.I tv
argument is NULL and the
.I tz_minuteswest
-field is nonzero.
+field is non-zero.
In such a case it is assumed that the CMOS clock
is on local time, and that it has to be incremented by this amount
to get UTC system time.
variable, and returns \-1 as the return value of the wrapper.
The value returned by a successful system call depends on the call.
-Many system calls return 0 on success, but some can return nonzero
+Many system calls return 0 on success, but some can return non-zero
values from a successful call.
The details are described in the individual manual pages.
.IR "struct floppy raw_cmd *" .
If
.I flags & FD_RAW_WRITE
-is nonzero, then
+is non-zero, then
.I data
points to an input buffer of length
.IR length .
If
.I flags & FD_RAW_READ
-is nonzero, then
+is non-zero, then
.I data
points to an output buffer of length
.IR length .
sets the port access permission bits for the calling process for
\fInum\fP bytes starting from port address \fIfrom\fP to the value
\fIturn_on\fP.
-If \fIturn_on\fP is nonzero, the calling process must be privileged
+If \fIturn_on\fP is non-zero, the calling process must be privileged
.RB ( CAP_SYS_RAWIO ).
.\" FIXME is the following ("Only the first 0x3ff I/O ports can be
.SH ERRORS
.TP
.B ENOMEM
-(Linux 2.6.9 and later) the caller had a nonzero
+(Linux 2.6.9 and later) the caller had a non-zero
.B RLIMIT_MEMLOCK
soft resource limit, but tried to lock more memory than the limit
permitted.
and later drops privileges (loses the
.B CAP_IPC_LOCK
capability by, for example,
-setting its effective UID to a nonzero value),
+setting its effective UID to a non-zero value),
then subsequent memory allocations (e.g.,
.BR mmap (2),
.BR brk (2))
\fInew_root\fP and \fIput_old\fP must not be on the same file system as
the current root.
.IP \- 3
-\fIput_old\fP must be underneath \fInew_root\fP, that is, adding a nonzero
+\fIput_old\fP must be underneath \fInew_root\fP, that is, adding a non-zero
number of \fI/..\fP to the string pointed to by \fIput_old\fP must yield
the same directory as \fInew_root\fP.
.IP \- 3
can block indefinitely.
.SH "RETURN VALUE"
On success, a positive number is returned; this is
-the number of structures which have nonzero
+the number of structures which have non-zero
.I revents
fields (in other words, those descriptors with events or errors reported).
A value of 0 indicates that the call timed out and no file
process's dumpable flag.
.\" Since Linux 2.6.13, the dumpable flag can have the value 2,
.\" but in 2.6.13 PR_GET_DUMPABLE simply returns 1 if the dumpable
-.\" flags has a nonzero value. This was fixed in 2.6.14.
+.\" flags has a non-zero value. This was fixed in 2.6.14.
.TP
.B PR_SET_KEEPCAPS
(Since Linux 2.2.18)
which determines whether the process's effective and permitted
capability sets are cleared when a change is made to the process's user IDs
such that the process's real UID, effective UID, and saved set-user-ID
-all become nonzero when at least one of them previously had the value 0.
+all become non-zero when at least one of them previously had the value 0.
(By default, these credential sets are cleared).
.I arg2
must be either 0 (capabilities are cleared) or 1 (capabilities are kept).
.TP
.B PTRACE_CONT
Restarts the stopped child process.
-If \fIdata\fP is nonzero and not
+If \fIdata\fP is non-zero and not
.BR SIGSTOP ,
it is interpreted as a signal to be delivered to the child;
otherwise, no signal is delivered.
.SS Privileges and resource limits
In Linux kernels before 2.6.12, only privileged
.RB ( CAP_SYS_NICE )
-processes can set a nonzero static priority.
+processes can set a non-zero static priority.
The only change that an unprivileged process can make is to set the
.B SCHED_OTHER
policy, and this can only be done if the effective user ID of the caller of
and
.B SCHED_FIFO
policies.
-If an unprivileged process has a nonzero
+If an unprivileged process has a non-zero
.B RLIMIT_RTPRIO
soft limit, then it can change its scheduling policy and priority,
subject to the restriction that the priority cannot be set to a
.BR FD_ISSET ()
macro.
.BR FD_ISSET ()
-returns nonzero if the descriptor is present and zero if
+returns non-zero if the descriptor is present and zero if
it is not.
.BR FD_CLR ()
removes a file descriptor from the set.
.B SETALL
operation on the semaphore set.
(Where multiple peers do not know who will be the first to
-initialize the set, checking for a nonzero
+initialize the set, checking for a non-zero
.I sem_otime
in the associated data structure retrieved by a
.BR semctl (2)
.TP
.B EINVAL
\fIss\fP is not NULL and the \fIss_flags\fP field contains
-a nonzero value other than
+a non-zero value other than
.BR SS_DISABLE .
.TP
.B ENOMEM
is not a valid signalfd file descriptor;
or,
.I flags
-is nonzero.
+is non-zero.
.\" Eventually glibc may support some flags
.\" or, the
.\" .I sizemask
No search permission for one of the encountered "directories",
or no read permission where
.I oldval
-was nonzero, or no write permission where
+was non-zero, or no write permission where
.I newval
-was nonzero.
+was non-zero.
.SH "CONFORMING TO"
This call is Linux-specific, and should not be used in programs
intended to be portable.
in seconds and nanoseconds.
Setting either field of
.I new_value.it_value
-to a nonzero value arms the timer.
+to a non-zero value arms the timer.
Setting both fields of
.I new_value.it_value
to zero disarms the timer.
Setting one or both fields of
.I new_value.it_interval
-to nonzero values specifies the period, in seconds and nanoseconds,
+to non-zero values specifies the period, in seconds and nanoseconds,
for repeated timer expirations after the initial expiration.
If both fields of
.I new_value.it_interval
To distinguish this case from that where a child was in a
waitable state, zero out the
.I si_pid
-field before the call and check for a nonzero value in this field
+field before the call and check for a non-zero value in this field
after the call returns.
.SH "RETURN VALUE"
.BR wait ():
An argz vector is a pointer to a character buffer together with a length.
The intended interpretation of the character buffer is an array
of strings, where the strings are separated by null bytes ('\\0').
-If the length is nonzero, the last byte of the buffer must be a null byte.
+If the length is non-zero, the last byte of the buffer must be a null byte.
.LP
These functions are for handling argz vectors.
The pair (NULL,0) is an argz vector, and, conversely,
.BR abort (3)
if
.I errnum
-is nonzero.
+is non-zero.
The message contains the filename, function name and
line number of the macro call, and the output of
.IR strerror(errnum) .
The
.BR atexit ()
function returns the value 0 if successful; otherwise
-it returns a nonzero value.
+it returns a non-zero value.
.SH "CONFORMING TO"
SVr4, 4.3BSD, C89, C99, POSIX.1-2001.
.SH NOTES
Omission of the frame pointers (as
implied by any of
.BR gcc (1)'s
-nonzero optimization levels) may cause these assumptions to be
+non-zero optimization levels) may cause these assumptions to be
violated.
.IP *
Inlined functions do not have stack frames.
is zero,
.BR bcmp ()
returns 0.
-Otherwise it returns a nonzero result.
+Otherwise it returns a non-zero result.
.SH "RETURN VALUE"
The
.BR bcmp ()
function returns 0 if the byte sequences are equal,
-otherwise a nonzero result is returned.
+otherwise a non-zero result is returned.
.SH "CONFORMING TO"
4.3BSD.
This function is deprecated (marked as LEGACY in POSIX.1-2001): use
.SH "RETURN VALUE"
The
.BR clearenv ()
-function returns zero on success, and a nonzero
+function returns zero on success, and a non-zero
value on failure.
.\" Most versions of Unix return -1 on error, or do not even have errors.
-.\" Glibc info and the Watcom C library document "a nonzero value".
+.\" Glibc info and the Watcom C library document "a non-zero value".
.SH VERSIONS
Not in libc4, libc5.
In glibc since glibc 2.0.
and sets the external variables \fItzname\fP with
information about the current time zone, \fItimezone\fP with the difference
between Coordinated Universal Time (UTC) and local standard time in
-seconds, and \fIdaylight\fP to a nonzero value if daylight savings
+seconds, and \fIdaylight\fP to a non-zero value if daylight savings
time rules apply during some part of the year.
The return value points to a statically allocated struct which might be
overwritten by subsequent calls to any of the date and time functions.
.PP
Unless the argument
.I nochdir
-is nonzero,
+is non-zero,
.BR daemon ()
changes the current working directory to the root ("/").
.PP
Unless the argument
.I noclose
-is nonzero,
+is non-zero,
.BR daemon ()
will redirect standard input, standard output and standard error
to \fI/dev/null\fP.
once for each object,
until either all shared objects have been processed or
.I callback
-returns a nonzero value.
+returns a non-zero value.
Each call to
.I callback
.LP
The function
.BR dlclose ()
-returns 0 on success, and nonzero on error.
+returns 0 on success, and non-zero on error.
.SS "The obsolete symbols _init() and _fini()"
The linker recognizes special symbols
.B _init
.in
.sp
.BR dladdr ()
-returns 0 on error, and nonzero on success.
+returns 0 on error, and non-zero on success.
.PP
The function
.BR dlvsym ()
system-specific limit determined by the precision of a
.IR double ),
and returns a pointer to the string.
-The high-order digit is nonzero, unless
+The high-order digit is non-zero, unless
.I number
is zero.
The low order digit is rounded.
A negative value for \fI*decpt\fP means that
the decimal point is to the left of the start of the string.
If the sign of
-\fInumber\fP is negative, \fI*sign\fP is set to a nonzero value,
+\fInumber\fP is negative, \fI*sign\fP is set to a non-zero value,
otherwise it is set to 0.
If
.I number
\fIerrno\fP is thread-local; setting it in one thread
does not affect its value in any other thread.
-Valid error numbers are all nonzero; \fIerrno\fP is never set to zero
+Valid error numbers are all non-zero; \fIerrno\fP is never set to zero
by any library function.
All the error names specified by POSIX.1
must have distinct values, with the exception of
the program name, a colon and a space, the message specified by the
.BR printf (3)-style
format string \fIformat\fP, and, if \fIerrnum\fP is
-nonzero, a second colon and a space followed by the string given by
+non-zero, a second colon and a space followed by the string given by
\fBperror(\fIerrnum\fB)\fP.
Any arguments required for
.I format
The value of this variable can be modified to change the output of
.BR error ().
-If \fIstatus\fP has a nonzero value, then
+If \fIstatus\fP has a non-zero value, then
.BR error ()
calls
.BR exit (3)
but other values can also be used.
For example, these arguments could refer to a location in an input file.
-If the global variable \fIerror_one_per_line\fP is set nonzero,
+If the global variable \fIerror_one_per_line\fP is set non-zero,
a sequence of
.BR error_at_line ()
calls with the
function maps an Ethernet address to the
corresponding hostname in
.I /etc/ethers
-and returns nonzero if it cannot be found.
+and returns non-zero if it cannot be found.
.PP
The
.BR ether_hostton ()
function maps a hostname to the
corresponding Ethernet address in
.I /etc/ethers
-and returns nonzero if it cannot be found.
+and returns non-zero if it cannot be found.
.PP
The
.BR ether_line ()
.I /etc/ethers
format (ethernet address followed by whitespace followed by
hostname; '#' introduces a comment) and returns an address
-and hostname pair, or nonzero if it cannot be parsed.
+and hostname pair, or non-zero if it cannot be parsed.
The buffer pointed to by
.I hostname
must be sufficiently long, for example, have the same length as
and
.B EXIT_FAILURE
is slightly more portable
-(to non-Unix environments) than the use of 0 and some nonzero value
+(to non-Unix environments) than the use of 0 and some non-zero value
like 1 or \-1.
In particular, VMS uses a different convention.
.LP
.I *envp
must be known to be valid.
.SH "RETURN VALUE"
-These functions return zero on success and nonzero if an error occurred.
+These functions return zero on success and non-zero if an error occurred.
.\" Earlier seven of these functions were listed as returning void.
.\" This was corrected in Corrigendum 1 (ISO/IEC 9899:1999/Cor.1:2001(E))
.\" of the C99 Standard.
.BR feof ()
tests the end-of-file indicator for the stream pointed to by
.IR stream ,
-returning nonzero if it is set.
+returning non-zero if it is set.
The end-of-file indicator can only be
cleared by the function
.BR clearerr ().
.BR ferror ()
tests the error indicator for the stream pointed to by
.IR stream ,
-returning nonzero if it is set.
+returning non-zero if it is set.
The error indicator can only be reset by the
.BR clearerr ()
function.
.SH DESCRIPTION
The
.BR finite ()
-functions return a nonzero value if \fIx\fP is neither infinite
+functions return a non-zero value if \fIx\fP is neither infinite
nor a "not-a-number" (NaN) value, and 0 otherwise.
The
.BR isnan ()
-functions return a nonzero value if \fIx\fP is a NaN value,
+functions return a non-zero value if \fIx\fP is a NaN value,
and 0 otherwise.
The
This is achieved by assigning
to each
.I FILE
-object a lockcount and (if the lockcount is nonzero)
+object a lockcount and (if the lockcount is non-zero)
an owning thread.
For each library call, these functions wait until the
.I FILE
The
.BR ftrylockfile ()
function returns zero for success
-(the lock was obtained), and nonzero for failure.
+(the lock was obtained), and non-zero for failure.
.SH ERRORS
None.
.SH "CONFORMING TO"
matches
.IR pattern ,
.B FNM_NOMATCH
-if there is no match or another nonzero value if there is an error.
+if there is no match or another non-zero value if there is an error.
.SH "CONFORMING TO"
POSIX.2.
The
.BR _POSIX_PIPE_BUF .
.TP
.B _PC_CHOWN_RESTRICTED
-returns nonzero if the
+returns non-zero if the
.BR chown (2)
call may not be used on this file.
If
.BR _POSIX_CHOWN_RESTRICTED .
.TP
.B _PC_NO_TRUNC
-returns nonzero if accessing filenames longer than
+returns non-zero if accessing filenames longer than
.B _POSIX_NAME_MAX
generates an error.
The corresponding macro is
.BR _POSIX_NO_TRUNC .
.TP
.B _PC_VDISABLE
-returns nonzero if special character processing can be disabled, where
+returns non-zero if special character processing can be disabled, where
.I fd
or
.I path
The other macros provide a short answer to some standard questions.
.TP
.BI isfinite( x )
-returns a nonzero value if
+returns a non-zero value if
.br
(fpclassify(x) != FP_NAN && fpclassify(x) != FP_INFINITE)
.TP
.BI isnormal( x )
-returns a nonzero value if
+returns a non-zero value if
(fpclassify(x) == FP_NORMAL)
.TP
.BI isnan( x )
-returns a nonzero value if
+returns a non-zero value if
(fpclassify(x) == FP_NAN)
.TP
.BI isinf( x )
.SH NOTES
In glibc 2.01 and earlier,
.BR isinf ()
-returns a nonzero value (actually: 1) if
+returns a non-zero value (actually: 1) if
.I x
is an infinity (positive or negative).
(This is all that C99 requires.)
\fImillitm\fP is the number of milliseconds since \fItime\fP
seconds since the Epoch, \fItimezone\fP is the local time zone
measured in minutes of time west of Greenwich, and \fIdstflag\fP
-is a flag that, if nonzero, indicates that Daylight Saving time
+is a flag that, if non-zero, indicates that Daylight Saving time
applies locally during the appropriate part of the year.
.LP
These days the contents of the \fItimezone\fP and \fIdstflag\fP
(which must refer to an existing, accessible file)
and the least significant 8 bits of
.I proj_id
-(which must be nonzero) to generate a
+(which must be non-zero) to generate a
.I key_t
type System V IPC key, suitable for use with
.BR msgget (2),
is passed in
.IR typeflag .
.PP
-To stop the tree walk, \fIfn\fP() returns a nonzero value; this
+To stop the tree walk, \fIfn\fP() returns a non-zero value; this
value will become the return value of
.BR ftw ().
As long as \fIfn\fP() returns 0,
Because
.BR ftw ()
uses dynamic data structures, the only safe way to
-exit out of a tree walk is to return a nonzero value from \fIfn\fP().
+exit out of a tree walk is to return a non-zero value from \fIfn\fP().
To allow a signal to terminate the walk without causing a memory leak,
have the handler set a global flag that is checked by \fIfn\fP().
\fIDon't\fP use
.SH "RETURN VALUE"
These functions return 0 on success, and \-1 if an error occurs.
-If \fIfn\fP() returns nonzero,
+If \fIfn\fP() returns non-zero,
then the tree walk is terminated and the value returned by \fIfn\fP()
is returned as the result of
.BR ftw ()
If
.BR nftw ()
is called with the \fBFTW_ACTIONRETVAL\fP flag,
-then the only nonzero value that should be used by \fIfn\fP()
+then the only non-zero value that should be used by \fIfn\fP()
to terminate the tree walk is \fBFTW_STOP\fP,
and that value is returned as the result of
.BR nftw ().
Once a stream has an orientation, it cannot be changed and persists until
the stream is closed.
.PP
-When \fImode\fP is nonzero, the
+When \fImode\fP is non-zero, the
.BR fwide ()
function first attempts to set
\fIstream\fP's orientation (to wide-character oriented if \fImode\fP > 0, or
.\" #define EAI_IDN_ENCODE -105 /* IDN encoding failed. */
.\" #endif
.BR getaddrinfo ()
-returns 0 if it succeeds, or one of the following nonzero error codes:
+returns 0 if it succeeds, or one of the following non-zero error codes:
.TP
.B EAI_ADDRFAMILY
The specified network host does not have any network addresses in the
The functionality is the same.
The result is returned in the buffer pointed to by
.I res
-and in case of an error the return value is nonzero with the same
+and in case of an error the return value is non-zero with the same
values as given above for
.IR getdate_err .
.LP
or if no entry is found
.I result
will be NULL.
-The functions return 0 on success and a nonzero error number on failure.
+The functions return 0 on success and a non-zero error number on failure.
In addition to the errors returned by the non-reentrant
versions of these functions, if
.I buf
returns a pointer to the user name when successful,
and NULL on failure.
.BR getlogin_r ()
-returns 0 when successful, and nonzero on failure.
+returns 0 when successful, and non-zero on failure.
.SH ERRORS
POSIX specifies
.TP
On success 0 is returned, and node and service names, if requested,
are filled with null-terminated strings, possibly truncated to fit
the specified buffer lengths.
-On error one of the following nonzero error codes is returned:
+On error one of the following non-zero error codes is returned:
.TP
.B EAI_AGAIN
The name could not be resolved at this time.
indicate a missing option argument.
If an error was detected, and
the first character of \fIoptstring\fP is not a colon, and
-the external variable \fIopterr\fP is nonzero (which is the default),
+the external variable \fIopterr\fP is non-zero (which is the default),
.BR getopt ()
prints an error message.
.PP
opens and rewinds the file.
If the
.I stayopen
-flag is nonzero,
+flag is non-zero,
the net data base will not be closed after each call to
.BR getrpcent ()
(either directly, or indirectly through one of
.BR stat (2).
If
.I errfunc
-returns nonzero, or if
+returns non-zero, or if
.B GLOB_ERR
is set,
.BR glob ()
and
.BR hcreate_r ()
return 0 when allocation of the memory
-for the hash table fails, nonzero otherwise.
+for the hash table fails, non-zero otherwise.
.LP
.BR hsearch ()
returns NULL if \fIaction\fP is \fBENTER\fP and
.LP
.BR hsearch_r ()
returns 0 if \fIaction\fP is \fBENTER\fP and
-the hash table is full, and nonzero otherwise.
+the hash table is full, and non-zero otherwise.
.SH ERRORS
POSIX documents
.TP
before calling these functions.
On return, if
.I errno
-is nonzero or
+is non-zero or
.I fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW)
-is nonzero, an error has occurred.
+is non-zero, an error has occurred.
.LP
If an error occurs and
.I "(math_errhandling & MATH_ERRNO)"
-is nonzero, then
+is non-zero, then
.I errno
is set to
.BR EDOM .
If an error occurs and
.I "(math_errhandling & MATH_ERREXCEPT)"
-is nonzero, then the invalid floating-point exception is raised.
+is non-zero, then the invalid floating-point exception is raised.
.LP
A domain error occurs when
.I x
the structure that \fIinp\fP points to.
.BR inet_aton ()
returns
-nonzero if the address is valid, zero if not.
+non-zero if the address is valid, zero if not.
.PP
The
.BR inet_addr ()
.br
.BR "0 1 2 3 4 5 6 7 8 9 a b c d e f A B C D E F" .
.SH "RETURN VALUE"
-The values returned are nonzero if the character
+The values returned are non-zero if the character
.I c
falls into the tested class, and a zero value
if not.
.SH "RETURN VALUE"
The
.BR iswalnum ()
-function returns nonzero
+function returns non-zero
if \fIwc\fP is a wide character
belonging to the wide-character class "alnum".
Otherwise it returns zero.
.SH "RETURN VALUE"
The
.BR iswalpha ()
-function returns nonzero
+function returns non-zero
if \fIwc\fP is a wide character
belonging to the wide-character class "alpha".
Otherwise it returns zero.
.SH "RETURN VALUE"
The
.BR iswblank ()
-function returns nonzero
+function returns non-zero
if \fIwc\fP is a wide character
belonging to the wide-character class "blank".
Otherwise it returns zero.
.SH "RETURN VALUE"
The
.BR iswcntrl ()
-function returns nonzero if \fIwc\fP is a
+function returns non-zero if \fIwc\fP is a
wide character belonging to the wide-character class "cntrl".
Otherwise it returns zero.
.SH "CONFORMING TO"
\fIdesc\fP (or in other words: belongs to the character class designated by
\fIdesc\fP), the
.BR iswctype ()
-function returns nonzero.
+function returns non-zero.
Otherwise it
returns zero.
If \fIwc\fP is
.SH "RETURN VALUE"
The
.BR iswctype ()
-function returns nonzero if
+function returns non-zero if
the \fIwc\fP has the designated
property.
Otherwise it returns 0.
.SH "RETURN VALUE"
The
.BR iswdigit ()
-function returns nonzero
+function returns non-zero
if \fIwc\fP is a wide character
belonging to the wide-character class "digit".
Otherwise it returns zero.
.SH "RETURN VALUE"
The
.BR iswgraph ()
-function returns nonzero
+function returns non-zero
if \fIwc\fP is a wide character
belonging to the wide-character class "graph".
Otherwise it returns zero.
.SH "RETURN VALUE"
The
.BR iswlower ()
-function returns nonzero
+function returns non-zero
if \fIwc\fP is a wide character
belonging to the wide-character class "lower".
Otherwise it returns zero.
.SH "RETURN VALUE"
The
.BR iswprint ()
-function returns nonzero if \fIwc\fP is a
+function returns non-zero if \fIwc\fP is a
wide character belonging to the wide-character class "print".
Otherwise it returns zero.
.SH "CONFORMING TO"
.SH "RETURN VALUE"
The
.BR iswpunct ()
-function returns nonzero
+function returns non-zero
if \fIwc\fP is a wide-character
belonging to the wide-character class "punct".
Otherwise it returns zero.
.SH "RETURN VALUE"
The
.BR iswspace ()
-function returns nonzero if \fIwc\fP is a wide character
+function returns non-zero if \fIwc\fP is a wide character
belonging to the wide-character class "space".
Otherwise it returns zero.
.SH "CONFORMING TO"
.SH "RETURN VALUE"
The
.BR iswupper ()
-function returns nonzero if \fIwc\fP is a wide character
+function returns non-zero if \fIwc\fP is a wide character
belonging to the wide-character class "upper".
Otherwise it returns zero.
.SH "CONFORMING TO"
.SH "RETURN VALUE"
The
.BR iswxdigit ()
-function returns nonzero if \fIwc\fP is a wide character
+function returns non-zero if \fIwc\fP is a wide character
belonging to the wide-character class "xdigit".
Otherwise it returns zero.
.SH "CONFORMING TO"
before calling these functions.
On return, if
.I errno
-is nonzero or
+is non-zero or
.I fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW)
-is nonzero, an error has occurred.
+is non-zero, an error has occurred.
.LP
A range error occurs if
.I x
before calling these functions.
On return, if
.I errno
-is nonzero or
+is non-zero or
.I fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW)
-is nonzero, an error has occurred.
+is non-zero, an error has occurred.
.LP
If an error occurs and
.I "(math_errhandling & MATH_ERRNO)"
-is nonzero, then
+is non-zero, then
.I errno is set to
.BR ERANGE .
If an error occurs and
.I "(math_errhandling & MATH_ERREXCEPT)"
-is nonzero, then the divide-by-zero floating-point exception is raised.
+is non-zero, then the divide-by-zero floating-point exception is raised.
.LP
A pole error occurs when
.I x
If the
.BR sigsetjmp (3)
call that set this
-\fIenv\fP used a nonzero \fIsavesigs\fP flag,
+\fIenv\fP used a non-zero \fIsavesigs\fP flag,
.BR siglongjmp ()
also
restores the set of blocked signals.
.B EDOM
The magnitude of \fIx\fP is too large and
.I "(math_errhandling & MATH_ERRNO)"
-is nonzero.
+is non-zero.
.SH "CONFORMING TO"
C99.
.SH "SEE ALSO"
.B EDOM
The magnitude of \fIx\fP is too large and
.I "(math_errhandling & MATH_ERRNO)"
-is nonzero.
+is non-zero.
.SH "CONFORMING TO"
C99.
.SH "SEE ALSO"
\fIcompar\fP is expected to have two arguments which point to the
\fIkey\fP object and to an array member, in that order, and which
returns zero if the \fIkey\fP object matches the array member, and
-nonzero otherwise.
+non-zero otherwise.
.PP
If
.BR lsearch ()
is called immediately;
if set to 3, a diagnostic message is printed on \fIstderr\fP
and the program is aborted.
-Using a nonzero
+Using a non-zero
.B MALLOC_CHECK_
value can be useful because otherwise
a crash may happen much later, and the true cause for the problem
.\" The Dinkumware doc and the Single Unix specification say this, but
.\" glibc doesn't implement this.
resets the shift state, only known to this function, to the initial state, and
-returns nonzero if the encoding has nontrivial shift state, or zero if the
+returns non-zero if the encoding has nontrivial shift state, or zero if the
encoding is stateless.
.SH "RETURN VALUE"
The
initial state.
.SH "RETURN VALUE"
.BR mbsinit ()
-returns nonzero if \fI*ps\fP is an initial state, or if
+returns non-zero if \fI*ps\fP is an initial state, or if
\fIps\fP is a null pointer.
Otherwise it returns 0.
.SH "CONFORMING TO"
.\" glibc doesn't implement this.
resets the shift state, only known to this function,
to the initial state, and
-returns nonzero if the encoding has nontrivial shift state, or zero if the
+returns non-zero if the encoding has nontrivial shift state, or zero if the
encoding is stateless.
.SH "RETURN VALUE"
If \fIs\fP is not NULL, the
If \fIs\fP is NULL, the
.BR mbtowc ()
function
-returns nonzero if the encoding
+returns non-zero if the encoding
has nontrivial shift state, or zero if the encoding is stateless.
.SH "CONFORMING TO"
C99
The
.BR on_exit ()
function returns the value 0 if successful; otherwise
-it returns a nonzero value.
+it returns a non-zero value.
.SH "CONFORMING TO"
This function comes from SunOS 4, but is also present in
libc4, libc5 and glibc.
.B x
and
.B X
-conversions, a nonzero result has the string `0x' (or `0X' for
+conversions, a non-zero result has the string `0x' (or `0X' for
.B X
conversions) prepended to it.
For
in the Persian (`fa_IR') locale.
.\" outdigits keyword in locale file
.SS "The field width"
-An optional decimal digit string (with nonzero first digit) specifying
+An optional decimal digit string (with non-zero first digit) specifying
a minimum field width.
If the converted value has fewer characters
than the field width, it will be padded with spaces on the left
and otherwise is sufficiently large to distinguish values of type
.IR double .
The digit before the decimal point is unspecified for non-normalized
-numbers, and nonzero but otherwise unspecified for normalized numbers.
+numbers, and non-zero but otherwise unspecified for normalized numbers.
.TP
.B c
If no
On success,
.BR ptsname_r ()
returns 0.
-On failure, a nonzero value is returned
+On failure, a non-zero value is returned
and
.I errno
is set to indicate the error.
The
.BR putenv ()
function returns zero on success,
-or nonzero if an error occurs.
+or non-zero if an error occurs.
.SH ERRORS
.TP
.B ENOMEM
.fi
.in
.SH "RETURN VALUE"
-The function returns zero on success, and a nonzero value on error.
+The function returns zero on success, and a non-zero value on error.
.SH "CONFORMING TO"
This function is a GNU extension.
.SH "SEE ALSO"
.BI "kill(getpid(), " "sig" );
.RE
.SH "RETURN VALUE"
-0 on success, nonzero for failure.
+0 on success, non-zero for failure.
.SH "CONFORMING TO"
C89, C99.
.SH "SEE ALSO"
.IR stdout .
If
.I fd2p
-is nonzero, then an auxiliary channel to a control
+is non-zero, then an auxiliary channel to a control
process will be set up, and a descriptor for it will be placed
in
.IR *fd2p .
.I errbuf
and
.I errbuf_size
-are nonzero,
+are non-zero,
.I errbuf
is filled in with the first
.I "errbuf_size \- 1"
.IR stdout .
If
.I fd2p
-is nonzero, then an auxiliary channel to a control
+is non-zero, then an auxiliary channel to a control
process will be setup, and a descriptor for it will be placed
in
.IR *fd2p .
service.
If
.I protocol
-is nonzero, then a mapping of the triple
+is non-zero, then a mapping of the triple
.RI [ prognum , versnum , protocol\fR]
to
\fB\%xprt\->xp_port\fR
.SH ERRORS
A return value of \-1 may indicate either an invalid input, or some
other error.
-It is incorrect to only test if the return value is nonzero.
+It is incorrect to only test if the return value is non-zero.
.BR rpmatch ()
can fail for any of the reasons that
When not true then you must assume there are no more attributes in the
message, even if
.I attrlen
-is nonzero.
+is non-zero.
.PP
.BI RTA_DATA( rta )
returns a pointer to the start of this attribute's data.
function scans the directory \fIdir\fP, calling
\fIfilter\fP() on each directory entry.
Entries for which
-\fIfilter\fP() returns nonzero are stored in strings allocated via
+\fIfilter\fP() returns non-zero are stored in strings allocated via
.BR malloc (3),
sorted using
.BR qsort (3)
If
.I pshared
-is nonzero, then the semaphore is shared between processes,
+is non-zero, then the semaphore is shared between processes,
and should be located in a region of shared memory (see
.BR shm_open (3),
.BR mmap (2),
.TP
.B ENOSYS
.I pshared
-is nonzero,
+is non-zero,
but the system does not support process-shared semaphores (see
.BR sem_overview (7)).
.SH CONFORMING TO
.BR getaliasent_r ()
and
.BR getaliasbyname_r ()
-return a nonzero value on error.
+return a non-zero value on error.
.SH FILES
The default alias database is the file
.IR /etc/aliases .
The function
.BR setvbuf ()
returns 0 on success.
-It can return any value on failure, but returns nonzero when
+It can return any value on failure, but returns non-zero when
.I mode
is invalid or the request cannot be honored.
It may set
environment with the value \fIvalue\fP, if \fIname\fP does not
already exist.
If \fIname\fP does exist in the environment, then
-its value is changed to \fIvalue\fP if \fIoverwrite\fP is nonzero;
+its value is changed to \fIvalue\fP if \fIoverwrite\fP is non-zero;
if \fIoverwrite\fP is zero, then the value of \fIname\fP is not
changed.
This function makes copies of the strings pointed to by
.BR sigsetjmp ()
is similar to
.BR setjmp ().
-If \fIsavesigs\fP is nonzero,
+If \fIsavesigs\fP is non-zero,
the set of blocked signals is saved in \fIenv\fP and will be restored
if a
.BR siglongjmp (3)
and
.BR sigsetjmp ()
return 0 if returning directly, and
-nonzero when returning from
+non-zero when returning from
.BR longjmp (3)
using the saved context.
.SH "CONFORMING TO"
.SH DESCRIPTION
.BR signbit ()
is a generic macro which can work on all real floating-point types.
-It returns a nonzero value if the value of
+It returns a non-zero value if the value of
.I x
has its sign bit set.
.PP
.IR "-0.0 < 0.0"
is false, but
.IR "signbit(\-0.0)"
-will return a nonzero value.
+will return a non-zero value.
.SH "CONFORMING TO"
C99.
This function is defined in IEC 559 (and the appendix with
.LP
The
.BR __flbf ()
-function returns a nonzero value if the stream is line-buffered,
+function returns a non-zero value if the stream is line-buffered,
and zero otherwise.
.LP
The
.BR __freadable ()
-function returns a nonzero value if the stream allows reading,
+function returns a non-zero value if the stream allows reading,
and zero otherwise.
.LP
The
.BR __fwritable ()
-function returns a nonzero value if the stream allows writing,
+function returns a non-zero value if the stream allows writing,
and zero otherwise.
.LP
The
.BR __freading ()
-function returns a nonzero value if the stream is read-only, or
+function returns a non-zero value if the stream is read-only, or
if the last operation on the stream was a read operation,
and zero otherwise.
.LP
The
.BR __fwriting ()
-function returns a nonzero value if the stream is write-only (or
+function returns a non-zero value if the stream is write-only (or
append-only), or if the last operation on the stream was a write
operation, and zero otherwise.
.LP
to 0 before the call,
and then determine if an error occurred by checking whether
.I errno
-has a nonzero value after the call.
+has a non-zero value after the call.
.SH EXAMPLE
See the example on the
.BR strtol (3)
to 0 before the call,
and then determine if an error occurred by checking whether
.I errno
-has a nonzero value after the call.
+has a non-zero value after the call.
In locales other than the "C" locale, other strings may also be accepted.
(For example, the thousands separator of the current locale may be
to 0 before the call,
and then determine if an error occurred by checking whether
.I errno
-has a nonzero value after the call.
+has a non-zero value after the call.
In locales other than the "C" locale, other strings may be accepted.
(For example, the thousands separator of the current locale may be
.I command
is NULL,
.BR system ()
-returns nonzero if the shell is available, and zero if not.
+returns non-zero if the shell is available, and zero if not.
.PP
.BR system ()
does not affect the wait status of any other children.
Normally, this will disconnect the line.
\fBCBAUDEX\fP is a mask
for the speeds beyond those defined in POSIX.1 (57600 and above).
-Thus, \fBB57600\fP & \fBCBAUDEX\fP is nonzero.
+Thus, \fBB57600\fP & \fBCBAUDEX\fP is non-zero.
.LP
.BR cfgetispeed ()
returns the input baud rate stored in the \fItermios\fP structure.
two constants EXTA, EXTB ("External A" and "External B").
Many systems extend the list with much higher baud rates.
.LP
-The effect of a nonzero \fIduration\fP with
+The effect of a non-zero \fIduration\fP with
.BR tcsendbreak ()
varies.
SunOS specifies a break of
.IR duration .
Under Solaris and Unixware,
.BR tcsendbreak ()
-with nonzero
+with non-zero
.I duration
behaves like
.BR tcdrain ().
before calling these functions.
On return, if
.I errno
-is nonzero or
+is non-zero or
.I fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW)
-is nonzero, an error has occurred.
+is non-zero, an error has occurred.
.LP
A range error occurs if
.I x
on the morning of 1 January 1970 (the Epoch).
.BR timerisset ()
-returns true (nonzero) if either field of the
+returns true (non-zero) if either field of the
.I timeval
structure pointed to by
.I tvp
-contains a nonzero value.
+contains a non-zero value.
.BR timercmp ()
compares the timer values in
.I b
using the comparison operator
.IR CMP ,
-and returns true (nonzero) or false (0) depending on
+and returns true (non-zero) or false (0) depending on
the result of the comparison.
.SH RETURN VALUE
.BR timerisset ()
and
.BR timercmp ()
-return true (nonzero) or false (0).
+return true (non-zero) or false (0).
.BR
.SH ERRORS
No errors are defined.
other time conversion functions that depend on the time zone.
In a SysV-like environment it will also set the variables \fItimezone\fP
(seconds West of GMT) and \fIdaylight\fP (0 if this time zone does not
-have any daylight saving time rules, nonzero if there is a time during
+have any daylight saving time rules, non-zero if there is a time during
the year when daylight saving time applies).
.PP
If the
.LP
If the
.I interval
-argument is nonzero, further
+argument is non-zero, further
.B SIGALRM
signals will be sent every
.I interval
.\" glibc doesn't implement this.
resets the shift state, only known to this function,
to the initial state, and
-returns nonzero if the encoding has nontrivial shift state,
+returns non-zero if the encoding has nontrivial shift state,
or zero if the encoding is stateless.
.SH "RETURN VALUE"
If \fIs\fP is not NULL, the
.PP
If \fIs\fP is NULL, the
.BR wctomb ()
-function returns nonzero if the
+function returns non-zero if the
encoding has nontrivial shift state, or zero if the encoding is stateless.
.SH "CONFORMING TO"
C99.
another wide character.
Its nature is implementation-dependent, but the special
value \fI(wctrans_t)\ 0\fP denotes an invalid mapping.
-Nonzero \fIwctrans_t\fP
+Non-zero \fIwctrans_t\fP
values can be passed to the
.BR towctrans (3)
function to actually perform
In other words, it represents a class of wide characters.
This type's nature is implementation-dependent, but the special value
\fI(wctype_t) 0\fP denotes an invalid property.
-Nonzero \fBwctype_t\fP values
+Non-zero \fBwctype_t\fP values
can be passed to the
.BR iswctype (3)
function
The data in the output buffer is marked as a completed record,
and the output buffer is optionally written out if
.I sendnow
-is nonzero.
+is non-zero.
This routine returns one if it succeeds, zero otherwise.
.LP
.nf
.B MTCOMPRESSION
Enable compression of tape data within the drive if
.I mt_count
-is nonzero and disable compression if
+is non-zero and disable compression if
.I mt_count
is zero.
This command uses the MODE page 15 supported by most DATs.
Format the tape into one or two partitions.
If
.I mt_count
-is nonzero, it gives the size of the first partition and the second
+is non-zero, it gives the size of the first partition and the second
partition contains the rest of the tape.
If
.I mt_count
This option turns on various debugging messages from the driver
(effective only if the driver was compiled with
.B DEBUG
-defined nonzero).
+defined non-zero).
.TP
.BR MT_ST_FAST_EOM " (Default: false)"
This option causes the
to look at and the bits 17-23 specify the bit pattern to look for.
If the bit pattern is zero, one or more bits under the mask indicate
the cleaning request.
-If the pattern is nonzero, the pattern must match
+If the pattern is non-zero, the pattern must match
the masked sense data byte.
.SS "MTIOCGET \(em Get status"
.PP
.SS "Locking the termios structure"
The termios structure of a tty can be locked.
The lock is itself
-a termios structure, with nonzero bits or fields indicating a
+a termios structure, with non-zero bits or fields indicating a
locked value.
.TP
.BI "TIOCGLCKTRMIOS struct termios *" argp
returns without doing anything.
When
.I arg
-is nonzero, nobody knows what will happen.
+is non-zero, nobody knows what will happen.
(SVr4, UnixWare, Solaris, Linux treat
.I "tcsendbreak(fd,arg)"
-with nonzero
+with non-zero
.I arg
like
.IR "tcdrain(fd)" .
.IR arg .
DG/UX and AIX treat
.I arg
-(when nonzero) as a timeinterval measured in milliseconds.
+(when non-zero) as a timeinterval measured in milliseconds.
HP-UX ignores
.IR arg .)
.TP
.BI "TCSBRKP int " arg
So-called "POSIX version" of
.BR TCSBRK .
-It treats nonzero
+It treats non-zero
.I arg
as a timeinterval measured in deciseconds, and does nothing
when the driver does not support breaks.
.BI "TIOCPKT const int *" argp
Enable (when
.RI * argp
-is nonzero) or disable packet mode.
+is non-zero) or disable packet mode.
Can be applied to the master side of a pseudo-terminal only (and will return
.B ENOTTY
otherwise).
In packet mode, each subsequent
.BR read (2)
-will return a packet that either contains a single nonzero control byte,
+will return a packet that either contains a single non-zero control byte,
or has a single byte containing zero (''\0') followed by data
written on the slave side of the pty.
If the first byte is not
("Set software carrier flag")
Set the CLOCAL flag in the termios structure when
.RI * argp
-is nonzero, and clear it otherwise.
+is non-zero, and clear it otherwise.
.LP
If the
.B CLOCAL
does not include "%p" and
.I /proc/sys/kernel/core_uses_pid
(see below)
-is nonzero, then .PID will be appended to the core filename.
+is non-zero, then .PID will be appended to the core filename.
Since version 2.4, Linux has also provided
a more primitive method of controlling
.I /proc/sys/kernel/core_uses_pid
file contains the value 0, then a core dump file is simply named
.IR core .
-If this file contains a nonzero value, then the core dump file includes
+If this file contains a non-zero value, then the core dump file includes
the process ID in a name of the form
.IR core.PID .
.SH NOTES
bytes in the file.
A section of type
.BR SHT_NOBITS
-may have a nonzero size, but it occupies no space in the file.
+may have a non-zero size, but it occupies no space in the file.
.TP
.IR sh_link
This member holds a section header table index link, whose interpretation
This member holds an index into the object file's symbol string table,
which holds character representations of the symbol names.
If the value
-is nonzero, it represents a string table index that gives the symbol
+is non-zero, it represents a string table index that gives the symbol
name.
Otherwise, the symbol table has no name.
.TP
nr_unused seems to be the number of unused dentries.
age_limit is the age in seconds after which dcache entries
can be reclaimed when memory is short and want_pages is
-nonzero when the kernel has called shrink_dcache_pages() and the
+non-zero when the kernel has called shrink_dcache_pages() and the
dcache isn't pruned yet.
.TP
.I /proc/sys/fs/dir-notify-enable
This can be slightly more than inode-max because
Linux allocates them one page full at a time.
nr_free_inodes represents the number of free inodes.
-preshrink is nonzero when the nr_inodes > inode-max and the
+preshrink is non-zero when the nr_inodes > inode-max and the
system needs to prune the inode list instead of allocating
more.
.TP
.RB ( fcntl (2))
on a system-wide basis.
If this file contains the value 0, leases are disabled.
-A nonzero value enables leases.
+A non-zero value enables leases.
.TP
.IR /proc/sys/fs/mqueue " (since Linux 2.6.6)"
This directory contains files
man page.
.TP
.I /proc/sys/kernel/htab-reclaim
-(PowerPC only) If this file is set to a nonzero value,
+(PowerPC only) If this file is set to a non-zero value,
the PowerPC htab
(see kernel file
.IR Documentation/powerpc/ppc_htab.txt )
contains a flag that controls the L2 cache of G3 processor
boards.
If 0, the cache is disabled.
-Enabled if nonzero.
+Enabled if non-zero.
.TP
.I /proc/sys/kernel/modprobe
This file contains the path for the kernel module loader.
.I /proc/sys/kernel/panic
gives read/write access to the kernel variable
.IR panic_timeout .
-If this is zero, the kernel will loop on a panic; if nonzero
+If this is zero, the kernel will loop on a panic; if non-zero
it indicates that the kernel should autoreboot after this number
of seconds.
When you use the
and then panics.
If the
.I /proc/sys/kernel/panic
-file is also nonzero then the machine will be rebooted.
+file is also non-zero then the machine will be rebooted.
.TP
.I /proc/sys/kernel/pid_max
This file
.IR /proc/sys/kernel/zero-paged " (PowerPC only) "
This file
contains a flag.
-When enabled (nonzero), Linux-PPC will pre-zero pages in
+When enabled (non-zero), Linux-PPC will pre-zero pages in
the idle loop, possibly speeding up get_free_pages.
.TP
.I /proc/sys/net
.TP
.IR /proc/sys/vm/legacy_va_layout " (since Linux 2.6.9)"
.\" The following is from Documentation/filesystems/proc.txt
-If nonzero, this disable the new 32-bit memory-mapping layout;
+If non-zero, this disable the new 32-bit memory-mapping layout;
the kernel will use the legacy (2.4) layout for all processes.
.TP
.I /proc/sys/vm/overcommit_memory
.B MAP_NORESERVE
set are not checked, and the default check is very weak,
leading to the risk of getting a process "OOM-killed".
-Under Linux 2.4 any nonzero value implies mode 1.
+Under Linux 2.4 any non-zero value implies mode 1.
In mode 2 (available since Linux 2.6), the total virtual address space
on the system is limited to (SS + RAM*(r/100)),
where SS is the size of the swap space, and RAM
if one wishes to find out where the kernel is spending its CPU cycles.
Profiling is enabled by setting the variable
.I prof_shift
-to a nonzero value.
+to a non-zero value.
This is done either by specifying
.B CONFIG_PROFILE
at compile time, or by giving the 'profile=' option.
All the parameters are as described at the top of this section, and the
.I reconnect
-value will allow device disconnect/reconnect if a nonzero value
+value will allow device disconnect/reconnect if a non-zero value
is used.
An example usage is as follows:
.IP
.IP
The
.I extended
-value, if nonzero, indicates that extended translation for large
+value, if non-zero, indicates that extended translation for large
disks is enabled.
The
.I no_reset
-value, if nonzero, tells the driver not to reset the SCSI bus when
+value, if non-zero, tells the driver not to reset the SCSI bus when
setting up the host adapter at boot.
.TP
.B "AdvanSys SCSI Hosts configuration ('advansys=')"
processes (whose effective user ID is 0, referred to as superuser or root),
and
.I unprivileged
-processes (whose effective UID is nonzero).
+processes (whose effective UID is non-zero).
Privileged processes bypass all kernel permission checks,
while unprivileged processes are subject to full permission
checking based on the process's credentials
it gains all capabilities in its permitted and effective capability sets,
except those masked out by the capability bounding set (i.e.,
.BR CAP_SETPCAP ).
-.\" If a process with real UID 0, and nonzero effective UID does an
+.\" If a process with real UID 0, and non-zero effective UID does an
.\" exec(), then it gets all capabilities (less CAP_SETPCAP) in its
.\" permitted set, and no effective capabilities
This provides semantics that are the same as those provided by
traditional Unix systems.
.SS Effect of User ID Changes on Capabilities
To preserve the traditional semantics for transitions between
-0 and nonzero user IDs,
+0 and non-zero user IDs,
the kernel makes the following changes to a thread's capability
sets on changes to the thread's real, effective, saved set,
and file system user IDs (using
.IP 1. 4
If one or more of the real, effective or saved set user IDs
was previously 0, and as a result of the UID changes all of these IDs
-have a nonzero value,
+have a non-zero value,
then all capabilities are cleared from the permitted and effective
capability sets.
.IP 2. 4
-If the effective user ID is changed from 0 to nonzero,
+If the effective user ID is changed from 0 to non-zero,
then all capabilities are cleared from the effective set.
.IP 3. 4
-If the effective user ID is changed from nonzero to 0,
+If the effective user ID is changed from non-zero to 0,
then the permitted set is copied to the effective set.
.IP 4. 4
-If the file system user ID is changed from 0 to nonzero (see
+If the file system user ID is changed from 0 to non-zero (see
.BR setfsuid (2))
then the following capabilities are cleared from the effective set:
.BR CAP_CHOWN ,
.BR CAP_FOWNER ,
and
.BR CAP_FSETID .
-If the file system UID is changed from nonzero to 0,
+If the file system UID is changed from non-zero to 0,
then any of these capabilities that are enabled in the permitted set
are enabled in the effective set.
.PP
If a thread that has a 0 value for one or more of its user IDs wants
to prevent its permitted capability set being cleared when it resets
-all of its user IDs to nonzero values, it can do so using the
+all of its user IDs to non-zero values, it can do so using the
.BR prctl (2)
.B PR_SET_KEEPCAPS
operation.
packets needed for path MTU discovery.
.TP
.B icmp_echo_ignore_all
-If this value is nonzero, Linux will ignore all
+If this value is non-zero, Linux will ignore all
.B ICMP_ECHO
requests.
.TP
.B icmp_echo_ignore_broadcasts
-If this value is nonzero, Linux will ignore all
+If this value is non-zero, Linux will ignore all
.B ICMP_ECHO
packets sent to broadcast addresses.
.TP
interface.
Variables described as
.I Boolean
-take an integer value, with a nonzero value ("true") meaning that
+take an integer value, with a non-zero value ("true") meaning that
the corresponding option is enabled, and a zero value ("false")
meaning that the option is disabled.
.\"
and its length.
If the length of an argument is two characters, the
argument is tested to see if it is executable (unfortunately, any
-register which contains a nonzero value appears executable).
+register which contains a non-zero value appears executable).
The third line gives the space allotted for a class, and the
class type.
The problem here is the argument aC should not be
Number of bytes of data in all messages in the queue.
.TP
.B NOTIFY_PID
-If this is nonzero, then the process with this PID has used
+If this is non-zero, then the process with this PID has used
.BR mq_notify (3)
to register for asynchronous message notification,
and the remaining fields describe how notification occurs.
.PP
If
.B IP_HDRINCL
-is specified and the IP header has a nonzero destination address then
+is specified and the IP header has a non-zero destination address then
the destination address of the socket is used to route the packet.
When
.B MSG_DONTROUTE
(after a possible leading `^').
.PP
Finally, there is one new type of atom, a \fIback reference\fR:
-`\e' followed by a nonzero decimal digit \fId\fR
+`\e' followed by a non-zero decimal digit \fId\fR
matches the same sequence of characters
matched by the \fId\fRth parenthesized subexpression
(numbering subexpressions by the positions of their opening parentheses,
.BR pread (2)
or
.BR pwrite (2)
-with a nonzero position is not supported on sockets.
+with a non-zero position is not supported on sockets.
.PP
It is possible to do non-blocking I/O on sockets by setting the
.B O_NONBLOCK
.BR ip (7).
Variables described as
.I Boolean
-take an integer value, with a nonzero value ("true") meaning that
+take an integer value, with a non-zero value ("true") meaning that
the corresponding option is enabled, and a zero value ("false")
meaning that the option is disabled.
.\" FIXME As at Sept 2006, kernel 2.6.18-rc5, the following are
.B SIOCATMARK
Returns true (i.e.,
.I value
-is nonzero) if the inbound data stream is at the urgent mark.
+is non-zero) if the inbound data stream is at the urgent mark.
If the
.B SO_OOBINLINE
All interaction with the user is done via standard input and standard error.
.SH "EXIT STATUS"
The exit status is zero if a time zone was successfully obtained
-from the user, nonzero otherwise.
+from the user, non-zero otherwise.
.SH ENVIRONMENT
.TP
\fBAWK\fP
projects / thirdparty / man-pages.git / commitdiff
