#!/bin/sh

# RemoveAllIPC.sh
# Tue Dec 30 16:26:28 PST 2008
# Chieh Cheng
# http://www.CynosureX.com/

# GNU General Public License (GPL) Version 2, June 1991

  removeIPC ()
  {
    flag="$1"
    ids=`ipcs "${flag}" | grep "^0x" | cut -d" " -f 2`
    if [ "${ids}" != "" ]
    then
      for id in `echo "${ids}"`
      do
        ipcrm ${flag} ${id}
      done
    fi
  }

  usage ()
  {
    scriptName=`basename "$0"`
    echo "  Usage:   ${scriptName} [-m] [-q] [-s]"
    echo
    echo "             -m - Remove all share memory segments"
    echo "             -q - Remove all message queues"
    echo "             -s - Remove all semaphore arrays"
    echo
    echo "           Running this script without any argument is the same as running it with all arguments."
  }

  if [ $# -lt 4 ]
  then
    if [ $# -eq 0 ]
    then
      "$0" -m -q -s
    else
      for argument
      do
        if [ "${argument}" = "-m" -o "${argument}" = "-q" -o "${argument}" = "-s" ]
        then
          removeIPC "${argument}"
        else
          echo "Unknown argument: ${argument}"
        fi
      done
    fi
  else
    usage
  fi