systemd-cat

systemd-cat is a command line tool in Linux that allows users to send log messages to the systemd journal. It is a part of the systemd system and service manager.

With systemd-cat, users can redirect standard output or error messages of a command to the journal for easier monitoring and troubleshooting. It provides a simple way to consolidate log messages into the systemd journal, which can be accessed using various journalctl commands.

The tool accepts input from either a file or the standard input and forwards it to the journal with appropriate priority levels such as emergency, alert, critical, error, warning, notice, info, and debug.

systemd-cat also allows users to specify additional metadata, such as the source of the log message, using the "--identifier" option. This can be helpful in distinguishing different log sources when analyzing logs.

Since systemd is a widely used init system in most modern Linux distributions, systemd-cat is a valuable tool for developers, system administrators, and users alike in managing and analyzing log messages efficiently.