On Sun, Mar 24, 2002 at 01:51:03PM +0000, David Golden wrote:
> Historically, both sed and grep are offspring of ed, the venerable
> Unix command-line-based text editor.
Still available on your local Linux box, and much as I spit on its
descendant, vi, a basic mastery of ed is important for the would-be guru -
on many Unix variants, it'll be all the editor you have in single user or
maintenance mode.
> ex was a command-line text editor written by a certain William Joy while
> at Berkely, with a superset of ed's commands.
>> vi was an enhanced version of ex, with an amazing new "visual editing mode"...
vi was also written by Bill Joy - of course like any sensible person, he's
an Emacs user now.
Niall
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