xconsole(1) on Linux
The text b17ebb251d95, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
monitor system console messages with X
Flags it lists
-
-daemon -
-exitOnFail -
-file -
-nonotify -
-notify -
-saveLines -
-verbose