.\"	$OpenBSD: logger.1,v 1.15 2007/05/31 19:20:12 jmc Exp $
.\"	$NetBSD: logger.1,v 1.4 1994/12/22 06:26:59 jtc Exp $
.\"
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.\"	@(#)logger.1	8.1 (Berkeley) 6/6/93
.\"
.Dd $Mdocdate: May 31 2007 $
.Dt LOGGER 1
.Os
.Sh NAME
.Nm logger
.Nd make entries in the system log
.Sh SYNOPSIS
.Nm logger
.Op Fl is
.Op Fl f Ar file
.Op Fl p Ar pri
.Op Fl t Ar tag
.Op Ar message ...
.Sh DESCRIPTION
The
.Nm logger
utility provides a shell command interface to the
.Xr syslog 3
system log module.
.Pp
The options are as follows:
.Bl -tag -width "-f file"
.It Fl f Ar file
Log the specified file.
.It Fl i
Log the process ID of the logger process
with each line.
.It Fl p Ar pri
Enter the message with the specified priority.
The priority may be specified numerically or as a
.Dq facility.level
pair.
For example,
.Dq -p local3.info
logs the message(s) as
.Ar info Ns rmational
level in the
.Ar local3
facility.
The default is
.Dq user.notice .
.It Fl s
Log the message to standard error, as well as the system log.
.It Fl t Ar tag
Mark every line in the log with the specified
.Ar tag .
.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
.Ex -std logger
.Sh EXAMPLES
.Bd -literal -offset indent
$ 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
utility is compliant with the
.St -p1003.1-2004
specification.
.Pp
The flags
.Op Fl ifpst
are extensions to that specification.