On Fri, 2021-10-22 at 08:42 +0000, DHAIY DHAIY wrote: > But is there a way to insert one string from command-line into > myservice's journal so that it can be seen byjournalctl -u myservice > later Try this: $ echo "foo" | systemd-cat -t foobar Then you can access your string with: $ journalctl -t foobar S