Editing Tcsh (section)

==History==
The “t” in <code>tcsh</code> comes from the “T” in [[TENEX (operating system)|TENEX]], an [[operating system]] which inspired Ken Greer at [[Carnegie Mellon University]], the author of tcsh, with its command-completion feature.<ref>{{cite web
 |url          =http://www.tcsh.org/tcsh.html/THE_T_IN_TCSH.html
 |title        =The T in tcsh
 |archive-url   =https://web.archive.org/web/20120414085306/http://www.tcsh.org/tcsh.html/THE_T_IN_TCSH.html
 |archive-date  =14 April 2012
 |url-status      =dead
 |access-date   =31 October 2013
}}</ref> Greer began working on his code to implement Tenex-style file name completion in September 1975, finally merging it into the C shell in December 1981.<ref name=Greer/>  Mike Ellis at Fairchild A.I. Labs added command completion in September 1983.<ref name=Greer/>  On October 3, 1983, Greer posted source to the net.sources newsgroup.<ref name=Greer/>