logger.1 (2010 09)

l
logger(1) logger(1)
NAME
logger - make entries in the system log
SYNOPSIS
logger [-t tag ][-p pri][
-i][-f file][message ... ]
DESCRIPTION
The
logger command provides a program interface to the
syslog() system log module (see
syslog (3C)).
A message can be given on the command line, which is logged immediately, or a file is read and each line
is logged. If no file or message is specified, the contents of the standard input are logged.
Options
The
logger command recognizes the following command-line options and arguments:
-t tag Mark every line in the log with the specified tag . The default is the value returned
by
getlogin() (see getlogin (3C)). If getlogin() returns NULL,
syslog is
the default.
-p pri Enter the message with the specified priority. The priority can be specified numeri-
cally or as a facility .level pair. For example, -p local3.info logs the message
or messages as informational level in the local3 facility. The default is
user.notice.
-i Log the process ID of the logger process with each line.
-f file Log the contents of the specified file.
message The message to log; if not specified, the file specified by the
-f option or standard
input is logged.
EXTERNAL INFLUENCES
Environment Variables
LC_MESSAGES determines the language in which messages are displayed.
If
LC_MESSAGES is not specified in the environment or is set to the empty string, the value of
LANG is
used as a default for each unspecified or empty variable. If
LANG is not specified or is set to the empty
string, a default of "C" (see lang (5)) is used instead of LANG.
If any internationalization variable contains an invalid setting,
logger behaves as if all internationali-
zation variables are set to "C". See environ (5).
International Code Set Support
Single- and multi-byte character code sets are supported.
EXAMPLES
Send the message
System rebooted to the syslogd daemon:
logger System rebooted
Send output from the users command (see users (1) to the syslogd daemon, marked as level info and
facility local0. The message is tagged with the string USERS:
users | logger -p local0.info -t USERS
Send the message System going down immediately!!! to the syslog daemon, at the emerg
level and user facility:
logger -p user.emerg "System going down immediately!!!"
WARNINGS
The logger command has no effect if the syslogd daemon (see syslogd (1M)) is not running on the sys-
tem.
Messages written in locales other than the
POSIX/C locale are not supported.
AUTHOR
logger was developed by the University of California, Berkeley.
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1