logger - add entries to the system log
logger [-i] [-f file] [-p priority] [-t tag] [message] ...
The logger command provides a method for adding one-line
entries to the system log file from the command line. One or
more message arguments can be given on the command line, in
which case each is logged immediately. If this is unspeci-
fied, either the file indicated with -f or the standard
input is added to the log. Otherwise, a file can be speci-
fied, in which case each line in the file is logged. If nei-
ther is specified, logger reads and logs messages on a
line-by-line basis from the standard input.
The following options are supported:
Uses the contents of file as the message to log.
-i Logs the process ID of the logger process with each
Enters the message with the specified priority. The
message priority can be specified numerically, or as a
facility.level pair. For example, `-p local3.info'
assigns the message priority to the info level in the
local3 facility. The default priority is user.notice.
-ttag Marks each line added to the log with the specified
The following operand is supported:
One of the string arguments whose contents are con-
catenated together, in the order specified, separated
by single space characters.
Example 1: Examples of the logger command
The following example:
example% logger System rebooted
logs the message `System rebooted' to the default priority
level notice to be treated by syslogd as are other messages
to the facility user.
The next example:
example% logger -p local0.notice -t HOSTIDM -f /dev/idmc
reads from the file /dev/idmc and logs each line in that
file as a message with the tag `HOSTIDM' at priority level
notice to be treated by syslogd as are other messages to the
See environ(5) for descriptions of the following environment
variables that affect the execution of logger: LANG, LC_ALL,
LC_CTYPE, LC_MESSAGES, and NLSPATH.
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWcsu |
| Interface Stability | Standard |
mailx(1), write(1), syslogd(1M), syslog(3C), attributes(5),
environ (5), standards(5)
Man(1) output converted with