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{{refimprove
| date = February 2017
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{{Infobox Software
| name = Berkeley r-commands
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| developer = [[Computer Systems Research Group]] at the [[University of California, Berkeley]]
| released = {{Start date and age|1981|6}}
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| operating system = [[Unix]] and [[Unix-like]]
| genre = [[Command (computing)|Command]] [[Software suite|suite]]
| license = [[BSD licenses|BSD]]
| website =
}}
{{IPstack}}
The '''Berkeley r-commands''' are a [[Software suite|suite]] of [[computer program]]s designed to enable users of one [[Unix]] system to [[log in]] or issue [[Command (computing)|commands]] to another [[Unix]] computer via [[TCP/IP]] [[computer network]].<ref>{{cite book |title=Unix System Management: Primer Plus |last=Horwitz |first=Jeff |chapter=Using the Berkeley r-commands Without a Password |chapter-url=https://books.google.com/books?id=-sue_SyjuCMC&pg=PA339 |page=339 |year=2003 |orig-year=2002 |publisher=Sams Publishing |via=Google Books |isbn=978-0-672-32372-0 |access-date=2018-03-04}}</ref> The r-commands were developed in 1982 by the [[Computer Systems Research Group]] at the [[University of California, Berkeley]], based on an early implementation of [[TCP/IP]] (the [[protocol stack]] of the [[Internet]]).<ref name="McKusick">{{cite book |title=[[Open Sources: Voices from the Open Source Revolution]] |last=McKusick |first=Marshall Kirk |authorlink=Marshall Kirk McKusick |year=1999 |isbn=978-1-56592-582-3 |chapter=Twenty Years of Berkeley Unix: From AT&T-Owned to Freely Redistributable |chapter-url=http://www.oreilly.com/openbook/opensources/book/kirkmck.html |publisher=O'Reilly & Associates |at=Section: "4.2BSD" |access-date=2018-03-03}}</ref>
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