This is why you check return codes! (I guess you could have done 'set -e')! # mv /usr/bin/man /usr/bin/people && echo 'justice served' would likely NOT result

This is why you check return codes! (I guess you could have done 'set -e')! # mv /usr/bin/man /usr/bin/people && echo 'justice served' would likely NOT result in justice (unless some idiot gave non-root write permission to /usr/bin)! :(!