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`.

• 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}

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