if $1x = nomodx goto nomod
if $1x = spacex goto space
if $1x = nospacex goto nospace
if $1x != x exit invalid arg
: nospace
ed - assem0.s
g/LOADHI=/s/1/0/
w
q
goto nomod
: space
ed - assem0.s
g/LOADHI=/s/0/1/
w
q
: nomod
as assem0.s assem1.s
mv a.out lib/a1
as assem0.s assem2.s
mv a.out lib/a2
as assem3.s
mv a.out lib/a3
