write (Unix)
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| write | |
|---|---|
| [[Programmer|Original authorTemplate:Pluralize from text]] | Dennis Ritchie, Ken Thompson |
| [[Programmer|DeveloperTemplate:Pluralize from text]] | AT&T Bell Laboratories |
| Initial release | November 3, 1971 |
| Engine | Page Template:Plainlist/styles.css has no content.Template:EditAtWikidata |
| Operating system | Unix and Unix-like |
| Platform | Cross-platform |
| Type | Command |
| Website | Script error: No such module "WikidataIB". |
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In Unix and Unix-like operating systems, Page Template:Mono/styles.css has no content.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
Hello!
Will show up to the user on that console as:
Message from root@wiki on pts/8 at 11:19 ...
Hello!
See also
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References
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- ^ Template:Man
- ^ Page Module:Citation/CS1/styles.css has no content.Unix Programmer's Manual (PDF) (1st ed.). Bell Labs. 3 November 1971. p. write(1). Archived from the original (PDF) on 9 July 2016. Retrieved 9 July 2016.
- ^ Page Module:Citation/CS1/styles.css has no content.Fetter, Mirko (2019). New Concepts for Presence and Availability in Ubiquitous and Mobile Computing. University of Bamberg Press. p. 38. ISBN 9783863096236.
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- ^ Page Module:Citation/CS1/styles.css has no content."write(1) – util-linux man page". Archived from the original on 2025-12-03. Retrieved 2026-02-03.
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