Re: [tlug] The Mother of All (bash) Commands

["Stephen J. Turnbull" <stephen@example.com>]

Godwin Stewart writes:

 > GUI front-end (think popen(3)) -- however it's ssh that's greatly
 > facilitating the remote backup or monitoring by mapping its stdin and
 > stdout to those of the remote process.

Or the local process.  Emacs's TRAMP package uses ssh to access
privileged accounts even locally.  Although in general this is
roundabout, the point is that TRAMP requires ssh for its normal
functioning (its basic mission is accessing remote files by ssh), so
ssh is known to be present, while sudo, super, su and so on may not.