SH: wrapper for Java applications

javactrl.sh

#!/bin/sh

invoke_help() {
  cat << EOF
Usage: $0 -a <ACTION> [-f] [-h]

  -a : ACTION, where ACTION is one of:
       start       : Start the service in the background
       stop        : Stop the service
       status      : Show status

  -f : FORCE, forces operation to run (no validation checks)

  -h : HELP, show usage"

EOF
  exit 1
}

invoke_start() {
  exit 0
}

invoke_stop() {
  exit 0
}

invoke_status() {
  exit 0
}

commandline_args="$@"

while getopts a:fh OPT; do
  case ${OPT} in
    a) action=$OPTARG
      ;;
    f) force_run=true
      ;;
    h) invoke_help
      ;;
    esac
done

if [ -z "$action" ]; then
  invoke_help
fi

case "$action" in
  status)
    invoke_status
    ;;
  start)
    invoke_start
    ;;
  stop)
    invoke_stop
    ;;
  *)
    echo "ERROR: Unknown action: '$action'"
    invoke_help
    ;;
esac