A good summary of the most frequent things like that: https://stackoverflow.com/a/5163260 https://stackoverflow.com/a/5163260 (Although they're sometimes trick

A good summary of the most frequent things like that: https://stackoverflow.com/a/5163260 https://stackoverflow.com/a/5163260 (Although they're sometimes tricky to use without more careful consideration.. like everything with bash and other shells really..)