mkdir /usr/ucb
cc -I/usr/include/retrofit -O from.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/from
cc -I/usr/include/retrofit -O last.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/last
cc -O ls.c -s
cp a.out /usr/ucb/ls
cc -I/usr/include/retrofit -O mkstr.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/mkstr
cc -I/usr/include/retrofit -O msgs.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/msgs
cc -I/usr/include/retrofit -O printenv.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/printenv
cc -O reset.c -s
cp a.out /usr/ucb/reset
cc -I/usr/include/retrofit -O setenv.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/setenv
cc -I/usr/include/retrofit -O strings.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/strings
cc -I/usr/include/retrofit -O tset.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/tset
cc -I/usr/include/retrofit -O whereis.c -lretro -ltermlib -lS -s
cp a.out /usr/ucb/whereis