.\" Copyright (c) 1983, 1990, 1993
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.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
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.\"    may be used to endorse or promote products derived from this software
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.\"	@(#)logger.1	8.1 (Berkeley) 6/6/93
.\"
.\" Section on valid facility and level strings added by
.\" and1000@debian.org, 26 Oct 1997.
.Dd June 6, 1993
.Dt LOGGER 1
.Os BSD 4.3
.Sh NAME
.Nm logger
.Nd a shell command interface to the syslog(3) system log module
.Sh SYNOPSIS
.Nm logger
.Op Fl isd
.Op Fl f Ar file
.Op Fl p Ar pri
.Op Fl t Ar tag
.Op Fl u Ar socket
.Op Ar message ...
.Sh DESCRIPTION
.Nm Logger
makes entries in the system log.
It provides a shell command interface to the
.Xr syslog  3
system log module.
.Pp
Options:
.Pp
.Bl -tag -width "message"
.It Fl i
Log the process id of the logger process
with each line.
.It Fl s
Log the message to standard error, as well as the system log.
.It Fl f Ar file 
Log the specified file.
.It Fl p Ar pri 
Enter the message with the specified priority.
The priority may be specified numerically or as a ``facility.level''
pair.
For example, ``\-p local3.info'' logs the message(s) as
.Ar info Ns rmational
level in the
.Ar local3
facility.
The default is ``user.notice.''
.It Fl t Ar tag 
Mark every line in the log with the specified
.Ar tag  .
.It Fl u Ar sock
Write to socket as specified with
.Ar socket
instead of builtin syslog routines.
.It Fl d
Use a datagram instead of a stream connection to this socket.
.It --
End the argument list. This is to allow the
.Ar message
to start with a hyphen (\-).
.It Ar message
Write the message to log; if not specified, and the
.Fl f
flag is not
provided, standard input is logged.
.El
.Pp
The
.Nm logger
utility exits 0 on success, and >0 if an error occurs.
.Pp
Valid facility names are: auth, authpriv (for security information of
a sensitive nature), cron, daemon, ftp, kern, lpr, mail, news,
security (deprecated synonym for auth), syslog, user, uucp, and local0
to local7, inclusive.
.Pp
Valid level names are):
alert, crit, debug, emerg, err, error (deprecated synonym for err),
info, notice, panic (deprecated synonym for emerg), warning,
warn (deprecated synonym for warning).
For the priority order and intended purposes of these levels, see
.Xr syslog 3 .
.Sh EXAMPLES
.Bd -literal -offset indent -compact
logger System rebooted

logger \-p local0.notice \-t HOSTIDM \-f /dev/idmc
.Ed
.Sh SEE ALSO
.Xr syslog 3 ,
.Xr syslogd 8
.Sh STANDARDS
The
.Nm logger
command is expected to be
.St -p1003.2
compatible.
.Sh AVAILABILITY
The logger command is part of the util-linux-ng package and is available from
ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.