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write

Write a message on the terminal of a specified logged in user. (ctrl-C to stop writing messages) To find out all terminal_ids of all users active on the system see the 'who' command

Send a message to user {{username}} on terminal {{terminal_id}}:

write {{username}} {{terminal_id}}

send message to user 'testuser' on terminal /dev/tty/5

write {{testuser}} {{tty/5}}

send message to user 'jhondoe' on pseudo terminal /dev/pts/5

write {{jhondoe}} {{pts/5}}