Software:write (Unix)
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Short description: Unix command to send messages to another user by writing directly to their terminal
| Original author(s) | Dennis Ritchie, Ken Thompson |
|---|---|
| Developer(s) | AT&T Bell Laboratories |
| Initial release | November 3, 1971 |
| Operating system | Unix and Unix-like |
| Platform | Cross-platform |
| Type | Command |
In Unix and Unix-like operating systems, write is a utility used to send messages to another user by writing a message directly to another user's TTY.[1]
History
The write command was included in the First Edition of the Research Unix operating system.[2] A similar command appeared in Compatible Time-Sharing System.[3]
Sample usage
The syntax for the write command is:
$ write user [tty] message
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.[4]
A conversation initiated between two users on the same machine:
$ write root pts/7 test
Will show up to the user on that console as:
Message from root@wiki on pts/8 at 11:19 ... test
See also
- List of Unix commands
- talk (Unix)
- wall (Unix)
References
- ↑ – Version 7 Unix Programmer's Manual
- ↑ Unix Programmer's Manual (1st ed.). Bell Labs. 3 November 1971. p. write(1). http://www.bell-labs.com/usr/dmr/www/man14.pdf. Retrieved 9 July 2016.
- ↑ Fetter, Mirko (2019). New Concepts for Presence and Availability in Ubiquitous and Mobile Computing. University of Bamberg Press. p. 38. ISBN 9783863096236. https://books.google.com/books?id=knqIDwAAQBAJ&dq=%22ctss%22+%22write+command%22&pg=PA38. "The basic concept of sending instantaneously messages to logged in users came with ... CTSS ..."
- ↑ write(1) – util-linux man page
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