tmate(1) on Linux
The text ae14dacd55af, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
terminal multiplexer with instant terminal sharing
Flags it lists
-
-2 -
-C -
-L -
-S -
-V -
-c -
-f -
-l -
-u -
-v