write can refer to several Unix commands. All known variations of write are used to write messages to another user. The most popular variation sends a message directly to another user's TTY. The write session is terminated by sending EOF, which can be done by pressing Ctrl+D. The tty argument is only necessary when a user is logged into more than one terminal.

Example

*A conversation initiated between two users on the same machine:

11:19 AM# write root pts/7
test

*Will show up to the user on that console as:

Message from root@gonix on pts/8 at 11:19 ...
test