cc scrunch.c
mv a.out scrunch

sh makerr errs
cmp errs /lib/rt11/errs
if ! -r lib mkdir lib
sh compile csi
sh compile info
sh compile init
sh compile io
sh compile misc
sh compile syscall
sh compile time
sh compile trap
sh compile tty
sh compile utils
sh compile diread

sh load

scrunch a.out scrunch.out
mv scrunch.out a.out
if $1x = x rm lib/* scrunch
if $1x = x rmdir lib
cmp a.out /bin/ru
