systemd-cat
Connect a pipeline or program's output streams with the systemd journal. tldr-pages
On Linux
Linux
Write the output of the specified command to the journal (both output streams are captured)
systemd-cat commandIdentifyWrite the output of a pipeline to the journal (stderr stays connected to the terminal)
command | systemd-catIdentifyUse the specified identifier (default: cat when reading from a pipeline, executable name otherwise)
command | systemd-cat --identifier idIdentifyUse the specified default priority level for all logged messages
systemd-cat --priority emerg commandIdentifyUse the specified default priority level for the logged messages from the command's stderr
systemd-cat --stderr-priority emerg commandIdentify