Am 22.04.2016 um 21:52 schrieb Rainer Weikusat:
> People who may not know it yet but who are (like me) prone to
> inverting two letter command names every once in a while might want
> to have a look at the sl package/ program.

Unfortunately it is not possible to provide such helper programs for
cat, cd, cp, dd, dh, gpg, gs, ln, nl, nop, pip, pon, pwd, ss, tac, test
and tset. :-)

Regards, T.