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.Dd March 1, 2017
.Dt VLOGGER 8
.Os
.Sh NAME
.Nm vlogger
.Nd log messages to syslog or an arbitrary executable
.Sh SYNOPSIS
.Nm vlogger
.Op Fl isS
.Op Fl f Ar file
.Op Fl p Ar pri
.Op Fl t Ar tag
.Op Ar message ...
.Sh DESCRIPTION
By default,
.Nm
reads lines from
.Dv stdin
and sends them to syslog.
If the file
.Pa /etc/vlogger
exists and is executable it is executed with
.Ar tag
as only argument and replaces
.Nm .
.Pp
If
.Nm
is executed as a log service for
.Xr runit 8
or another daemontools like
supervision suite it uses the service name as default
.Ar tag .
As example if
.Nm
is linked to
.Dv /var/service/foo/log/run
it uses
.Dv foo
as default
.Ar tag .
.Pp
The options are as follows:
.Bl -tag -width "-f file"
.It Fl f Ar file
Read lines from the specified
.Ar file .
This
.It Fl i
Log the PID of the
.Nm
process.
Only supported if
.Xr syslog 3
is used.
.It Fl p Ar pri
The.
.Ar pri
can be
.Pa facility.level
or just
.Pa facility .
See
.Sx FACILITIES ,
.Sx LEVELS
or
.Xr syslog 3 .
The default is
.Pa daemon.info .
.It Fl S
Force
.Nm
to use
.Xr syslog 3
even if
.Pa /etc/vlogger
exists.
.It Fl s
Output the message to standard error, as well as
.Xr syslog 3 .
Only supported if
.Xr syslog 3
is used.
.It Fl t Ar tag
Defines the
.Xr openlog 3
.Pa ident
which is used as prefix for each log message or passed as first argument to
.Pa /etc/vlogger .
.It Ar message
Write the
.Ar message
to the log.
.El
.Sh FACILITIES
.Bl -tag -width 11n -compact
.It auth
.It authpriv
.It cron
.It daemon
.It ftp
.It kern
can not be used from userspace replaced with
.Pa daemon .
.It lpr
.It mail
.It news
.It syslog
.It user
.It uucp
.It local[0-7]
.It security
deprecated synonym for
.Pa auth .
.El
.Sh LEVELS
.Bl -tag -width 11n -compact
.It emerg
.It alert
.It crit
.It err
.It warning
.It notice
.It info
.It debug
.It panic
deprecated synonym for
.Pa emerg .
.It error
deprecated synonym for
.Ar err .
.It warn
deprecated synonym for
.Pa warning .
.El
.Sh FILES
.Bl -tag -width indent
.It /etc/vlogger
An optional executable file that is used to to handle the messages.
It is executed with
.Ar tag ,
.Ar level
and
.Ar facility
as arguments
and replaces the
.Nm
process.
.El
.Sh EXIT STATUS
.Ex -std
.Sh EXAMPLES
.Pa /etc/vlogger :
.Bd -literal -offset indent
#!/bin/sh
exec svlogd /var/log/$1
.Ed
.Sh SEE ALSO
.Xr logger 1 ,
.Xr syslog 3 ,
.Xr svlogd 8
.Sh HISTORY
This program is a replacement for the
.Nm logger
utility provided by
.Nm util-linux .
.Sh AUTHORS
.An Duncan Overbruck Aq Mt mail@duncano.de
.Sh LICENSE
.Nm
is in the public domain.
.Pp
To the extent possible under law,
the creator of this work
has waived all copyright and related or
neighboring rights to this work.
.Pp
.Lk http://creativecommons.org/publicdomain/zero/1.0/
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