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32 .\" @(#)logger.1 8.1 (Berkeley) 6/6/93
34 .\" Section on valid facility and level strings added by
35 .\" and1000@debian.org, 26 Oct 1997.
41 .Nd a shell command interface to the syslog(3) system log module
54 makes entries in the system log.
55 It provides a shell command interface to the
61 .Bl -tag -width "message"
63 Use datagram (UDP) instead of the default stream connection (TCP).
65 Log the process ID of the logger process with each line.
66 .It Fl f, Fl Fl file Ar file
67 Log the contents of the specified \fIfile\fR. This option cannot be
68 combined with a command-line message.
70 Display a help text and exit.
71 .It Fl n, Fl Fl server Ar server
72 Write to the specified remote syslog
74 using UDP instead of to the builtin syslog routines.
75 .It Fl P, Fl Fl port Ar port
78 The default port number is 514.
79 .It Fl p, Fl Fl priority Ar priority
80 Enter the message into the log with the specified
82 The priority may be specified numerically or as a \fIfacility.level\fR
84 For example, \fB-p local3.info\fR logs the message as
85 informational in the local3 facility.
86 The default is \fIuser.notice\fR.
87 .It Fl s, Fl Fl stderr
88 Output the message to standard error as well as to the system log.
89 .It Fl t, Fl Fl tag Ar tag
90 Mark every line to be logged with the specified
92 .It Fl u, Fl Fl socket Ar socket
93 Write to the specified
95 instead of to the builtin syslog routines.
96 .It Fl V, Fl Fl version
97 Display version information and exit.
99 End the argument list. This is to allow the
101 to start with a hyphen (\-).
103 Write the message to log; if not specified, and the
106 provided, standard input is logged.
111 utility exits 0 on success, and >0 if an error occurs.
113 Valid facility names are: auth, authpriv (for security information of a
114 sensitive nature), cron, daemon, ftp, kern (can't be generated from user
115 process), lpr, mail, news, security (deprecated synonym for auth), syslog,
116 user, uucp, and local0 to local7, inclusive.
118 Valid level names are:
119 alert, crit, debug, emerg, err, error (deprecated synonym for err),
120 info, notice, panic (deprecated synonym for emerg), warning,
121 warn (deprecated synonym for warning).
122 For the priority order and intended purposes of these levels, see
125 .Bd -literal -offset indent -compact
126 logger System rebooted
128 logger \-p local0.notice \-t HOSTIDM \-f /dev/idmc
130 logger \-n loghost.example.com System rebooted
138 command is expected to be
142 The logger command is part of the util-linux package and is available from
143 ftp://ftp.kernel.org/pub/linux/utils/util-linux/.