File permissions
-* Mode Structure:: Structure of File Permissions
+* Mode Structure:: Structure of File Permissions
* Symbolic Modes:: Mnemonic permissions representation
* Numeric Modes:: Permissions as octal numbers
@sc{posix} will require that support for it be withdrawn. Use
@option{--key} (@option{-k}) instead.
-@end table
+@end table
Historical (BSD and System V) implementations of @code{sort} have
differed in their interpretation of some options, particularly
options. However, that is contrary to @sc{POSIX}, so when the environment
variable @env{POSIXLY_CORRECT} is set, @code{true} ignores @emph{all}
command line arguments, including @samp{--help} and @samp{--version}.
-
+
This version of @code{true} is implemented as a C program, and is thus
more secure and faster than a shell script implementation, and may safely
be used as a dummy shell for the purpose of disabling accounts.