NAME

       logger — make entries in the system log

SYNOPSIS

       logger [options ...] [message ...]

DESCRIPTION

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

OPTIONS

       -4, --ipv4
                Use IPv4 to connect to hosts.

       -6, --ipv6
                Use IPv6 to connect to hosts.

       -S, --source ip
                Set source IP address.

       -h, --host host
                Log to host instead of to the default /dev/log.

       -u, --unix sock
                Log to UNIX socket sock instead of /dev/log.

       -i, --id [pid]
                Log the process id of the logger process with each line.

       -s, --stderr
                Log the message to standard error, as well as the system log.

       -f, --file file
                Log the specified file.

       -p, --priority 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."

       -t, --tag tag
                Mark every line in the log with the specified tag.

       --usage  Display a short usage message.

       -?, --help
                Display a help list.

       -V, --version
                Display program version.

       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.

EXAMPLES

             logger System rebooted

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

SEE ALSO

       syslog(3), syslogd(8).

STANDARDS

       The logger command is expected to be IEEE Std 1003.2 (“POSIX.2”) compatible.

GNU Network Utilities                           February 15, 2019                                      LOGGER(1)