<hppavilion[1]> learn zed is the 26th letter of the alphabet in Commonwealth English. Why they consider what is clearly a 3-letter string to be a single letter is unclear.

#!/usr/bin/perl -w
$_ = join " ", @ARGV; if (s/^([^ ]*) +([^ ]*) +//) { print "$1: "; exec $2, $_; }