logger

adds entries to the system log

TLDR

Log a message

$ logger [message]

Log from stdin

$ echo [message] | logger

Log to remote server

$ echo [message] | logger -n [hostname] -P [port]

Log with custom tag

$ echo [message] | logger -t [tag]

Log with priority

$ echo [message] | logger -p user.warning

SYNOPSIS

logger [options] [message]

DESCRIPTION

logger adds entries to the system log (syslog). It is useful for logging from shell scripts or adding custom messages to system logs for debugging and monitoring.

PARAMETERS

-n, --server HOST

Send to remote syslog server

-P, --port PORT

Remote server port (default: 514)

-t, --tag TAG

Mark messages with tag (default: username)

-p, --priority PRIORITY

Log priority (facility.level, default: user.notice)

-s, --stderr

Also output to stderr

-f, --file FILE

Log contents of file

-i

Include process ID

PRIORITY LEVELS

Facilities: auth, cron, daemon, kern, local0-7, mail, news, syslog, user, uucpLevels: emerg, alert, crit, err, warning, notice, info, debug

INSTALL

sudo apt install bsdutils

sudo apk add logger

nix profile install nixpkgs#logger