logger
a shell command interface to the syslog(3) system log module
Synopsis
logger
[-dhisV] [-f file]
[-n server]
[-P port]
[-p pri]
[-t tag]
[-u socket] [message]
add an example, a script, a trick and tips
examples
logger System rebooted
logger -p local0.notice -t HOSTIDM -f /dev/idmc
logger -n loghost.example.com System rebooted
description
logger makes entries in
the system log. It provides a shell command interface to the
syslog(3) system log module.
Options:
-d,
--udp
Use datagram (UDP) instead of
the default stream connection (TCP).
-i,
--id
Log the process ID of the
logger process with each line.
-f,
--file file
Log the contents of the
specified file. This option cannot be combined with a
command-line message.
-h,
--help
Display a help text and
exit.
-n,
--server server
Write to the specified remote
syslog server using UDP instead of to the builtin
syslog routines.
-P,
--port port
Use the specified UDP
port. The default port number is 514.
-p,
--priority priority
Enter the message into the log
with the specified priority. The priority may be
specified numerically or as a facility.level pair.
For example, -p local3.info logs the message as
informational in the local3 facility. The default is
user.notice.
-s,
--stderr
Output the message to standard
error as well as to the system log.
-t,
--tag tag
Mark every line to be logged
with the specified tag.
-u,
--socket socket
Write to the specified
socket instead of to the builtin syslog routines.
-V,
--version
Display version information and
exit.
--
End the
argument list. This is to allow the message to start
with a hyphen (-).
message
Write the
message to log; if not specified, and the -f
flag is not provided, standard input is logged.
The
logger utility exits 0 on success, and >0 if an
error occurs.
Valid facility
names are: auth, authpriv (for security information of a
sensitive nature), cron, daemon, ftp, kern (can’t be
generated from user process), lpr, mail, news, security
(deprecated synonym for auth), syslog, user, uucp, and
local0 to local7, inclusive.
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 syslog(3).
availability
The logger command is part of the util-linux package and is
available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux August 2011 util-linux
standards
The logger command is expected to be IEEE Std 1003.2
(’’POSIX.2’’) compatible.
f-
--help
Display a help text and exit.
i-
--id
Log the process ID of the logger process with each line.
n-
--stderr
Output the message to standard error as well as to the system
log.
t-
--version
Display version information and exit.
--
End the argument list. This is to allow the message to
start with a hyphen (-).
message
Write the message to log; if not specified, and the -f
flag is not provided, standard input is logged.
The logger utility exits 0 on success, and >0 if an
error occurs.
Valid facility names are: auth, authpriv (for security
information of a sensitive nature), cron, daemon, ftp, kern
(can’t be generated from user process), lpr, mail, news, security
(deprecated synonym for auth), syslog, user, uucp, and local0 to
local7, inclusive.
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 syslog(3).
see also
syslog, syslogd