On 31/10/2017, Dave Horsfall <dave(a)horsfall.org> wrote:
A previous boss insisted that all his support staff
learn ED, because one
day it might be the only editor available on a trashed box (you can't
mount /usr etc).
ed man; man ed
https://www.gnu.org/fun/jokes/ed-msg.html (Sorry -- could not resist)
N.