Control Structures, con't

• case/;;/esac -- demonstrated in "apt-yum" script :

  • case "$1" in
  • install)
  • shift
  • yum install "$@"
  • ;;
  • update)
  • shift
  • yum list >/dev/null
  • yum clean oldheaders
  • ;;
  • upgrade)
  • shift
  • yum update "$@"
  • ;;
  • dist-upgrade)
  • shift
  • yum upgrade
  • ;;
  • *)
  • echo "I don't know how to yummify that!"
  • exit 1
  • ;;
  • esac

• Note use of positional paremeters $1, $2, etc, shift, $@ for entire line

• See getopt(1) for argument parsing "library"

Notes: