$!  Define_unix.com
$!  15-APR-1994, David Mathog
$!
$!  Puts Posix commands into DCL symbols
$!
$! P1 is the name of the unix command
$! P2 is a string containing any POSIX command qualifiers
$!
$ if P1 .eqs. "" then exit
$ 'P1' :== POSIX'P2' POSIX$BIN:'P1'.. """