LOGGER(1)LOGGER(1)NAMElogger - add entries to the system log
SYNOPSISlogger [-i] [-f file] [-p priority] [-t tag] [message] ...
DESCRIPTION
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 immedi‐
ately. If this is unspecified, 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 neither is
specified, logger reads and logs messages on a line-by-line basis from
the standard input.
OPTIONS
The following options are supported:
-ffile
Uses the contents of file as the message to log.
-i
Logs the process ID of the logger process with each line.
-ppriority
Enters the message with the specified priority. The mes‐
sage 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 tag.
OPERANDS
The following operand is supported:
message
One of the string arguments whose contents are concatenated
together, in the order specified, separated by single space
characters.
EXAMPLES
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 mes‐
sage with the tag `HOSTIDM' at priority level notice to be treated by
syslogd as are other messages to the facility local0.
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables
that affect the execution of logger: LANG, LC_ALL, LC_CTYPE, LC_MES‐
SAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0
Successful completion.
>0
An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────┤
│Interface Stability │ Standard │
└────────────────────┴─────────────────┘
SEE ALSOmailx(1), write(1), syslogd(1M), syslog(3C), attributes(5), environ(5),
standards(5)
Feb 1, 1995 LOGGER(1)
