Editing Ed (software) (section)

{{Short description|Line-oriented text editor for Unix}}
{{lowercase|title=ed (text editor)}}
{{Infobox software
| name                   = ed
| screenshot             = Ed lines.jpg
| screenshot size        = 
| caption                = The {{code|ed}} text editor
| author                 = [[Ken Thompson]]
| developer              = [[AT&T Bell Laboratories]]
| released               = {{Release year|df=yes|1973}}
| programming language   = [[C (programming language)|C]]
| operating system       = [[Unix]], [[Unix-like]], [[Plan 9 from Bell Labs|Plan 9]]
| platform               = [[Cross-platform]]
| genre                  = [[Text editor]]
| license                = Plan 9: [[MIT License]]
}}
'''{{tt|ed}}''' (pronounced as distinct letters, {{IPAc-en|ˌ|iː|ˈ|d|iː}})<ref>{{Citation|last=Computerphile|title=Where GREP Came From – Computerphile|date=2018-07-06|url=https://www.youtube.com/watch?v=NTfOnGZUZDk&t=119| archive-url=https://ghostarchive.org/varchive/youtube/20211211/NTfOnGZUZDk| archive-date=2021-12-11 | url-status=live|access-date=2020-10-21}}{{cbignore}}</ref> is a [[line editor]] for [[Unix]] and [[Unix-like]] operating systems. It was one of the first parts of the Unix operating system that was developed, in August 1969.<ref name="penguin">{{cite book |first=Peter H. |last=Salus |author-link=Peter H. Salus |title=The Daemon, the Gnu and the Penguin |url=http://www.groklaw.net/article.php?story=20050414215646742 |publisher=[[Groklaw]] |year=2005|archive-url=https://web.archive.org/web/20100505073306/http://www.groklaw.net/article.php?story=20050414215646742 |archive-date=2010-05-05 }}</ref> It remains part of the [[POSIX]] and [[The Open Group|Open Group]] standards for Unix-based operating systems,<ref name=sus>{{man|cu|ed|SUS}}</ref> alongside the more sophisticated full-screen editor [[Vi (text editor)|vi]].