# write
# Write a message on the terminal of a specified logged in user (ctrl-C to stop writing messages).
# Use the `who` command to find out all terminal_ids of all active users active on the system. See also `mesg`.
# More information: <https://manned.org/write>.
# Send a message to a given user on a given terminal id:
write username terminal_id
# Send message to "testuser" on terminal `/dev/tty/5`:
write testuser tty/5
# Send message to "johndoe" on pseudo terminal `/dev/pts/5`:
write johndoe pts/5
$
cheat.sh
tldr