ed

( n.)

   "ed is the standard text editor." Line taken from the original {Unix}
   manual  page  on  ed,  an ancient line-oriented editor that is by now
   used  only  by a few {Real Programmer}s, and even then only for batch
   operations. The original line is sometimes uttered near the beginning
   of  an  emacs  vs.  vi  holy war on {Usenet}, with the (vain) hope to
   quench the discussion before it really takes off. Often followed by a
   standard  text  describing  the many virtues of ed (such as the small
   memory  {footprint}  on a Timex Sinclair, and the consistent (because
   nearly non-existent) user interface).

[glossary]