1. 
   Tcsh
   tcsh (l "tee-cee-shell", l "tee-shell", or as an acronym "tee cee ess aitch") is a Unix shell based on and compatible with the C shell (csh). It is essentially the C shell with programmable command line completion, command-line editing, and a few other features. ==History== The “t” in tcsh come...
   Found op http://en.wikipedia.org/wiki/Tcsh
   
   
2. 
   tcsh
   (Unix, shell) A Unix shell by Christos Zoulas (christos@ee.cornell.edu), based on csh. tcsh adds WYSIWYG command line editing, command name completion, input history and various other features. Version 6.04 runs under many versions of Unix and under OpenVMS. (ftp://ftp.spc.edu/). (1993-07-09)
   Found op http://foldoc.org/tcsh
   
   

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