#!/bin/csh -f

if (! -e /vmunix.411) exec echo 411 vmunix does not exist
if (! -e /sbin/init.411) exec echo 411 init does not exist
if (! -e /sbin/sh.411) exec echo 411 sh does not exist on /sbin
if (! -e /usr/bin/sh.411) exec echo 411 sh does not exist on /usr/bin

if (-e /vmunix.403) exec echo 403 vmunix already exists
if (-e /sbin/init.403) exec echo 403 init already exists
if (-e /sbin/sh.403) exec echo 403 sh already exists on /sbin
if (-e /usr/bin/sh.403) exec echo 403 sh already exists on /usr/bin

mv /vmunix /vmunix.403 ; mv /vmunix.411 /vmunix
mv /sbin/init /sbin/init.403 ; mv /sbin/init.411 /sbin/init
mv /sbin/sh /sbin/sh.403 ; mv /sbin/sh.411 /sbin/sh
mv /usr/bin/sh /usr/bin/sh.403 ; mv /usr/bin/sh.411 /usr/bin/sh

ls -ls /vmunix* /sbin/init* /sbin/sh* /usr/bin/sh*