LOGGER(1) | General Commands Manual | LOGGER(1)

# NAME

`logger` — make entries in the system log

# SYNOPSIS

`logger` | [`-cis`] [`-f` file] [`-p` pri] [`-t` tag] [message ...]

# DESCRIPTION

The `logger` utility provides a shell command interface to the syslog(3) system log module.

The options are as follows:

`-c`
  If unable to pass the message to syslogd(8), attempt to write the message to the console.
`-f` file
  Read from the specified file.
`-i`
  Log the process ID of the logger process with each line.
`-p` pri
  Enter the message with the specified priority. The priority may be specified numerically or as a “facility.level” pair. For example, “-p local3.info” logs the message(s) as informational level in the local3 facility. The default is “user.notice”.
`-s`
  Log the message to standard error, as well as the system log.
`-t` tag
  Mark every line in the log with the specified tag.
message
  Write the message to log; if not specified, and the `-f` flag is not provided, standard input is logged.

# EXIT STATUS

The `logger` utility exits 0 on success, and >0 if an error occurs.

# EXAMPLES

    $ logger System rebooted

    $ logger -p local0.notice -t HOSTIDM -f /dev/idmc

# SEE ALSO

syslog(3), syslogd(8)

# STANDARDS

The `logger` utility is compliant with the IEEE Std 1003.1-2008 (“POSIX.1”) specification.

The flags [`-cfipst`] are extensions to that specification.

June 17, 2019 | Debian