#!/bin/sh 
#
#  "zap foo" kills all processes which have foo in their ps
#  listing.  Normally you are asked about each process individually,
#  but zap -f kills all matching processes silently (DANGEROUS!)
#
#  Eric Myers <myers@noether.vassar.edu>, 5 May 1994
#  Department of Physics and Astronomy, Vassar College
#  @(#) $Id: zap,v 2.1 2001/08/08 15:12:11 myers Exp myers $
######################################################################

FORCE=N
FLAGS=
ARG=

while [ $# != 0 ]
do   case "$1" in
        -f)	FORCE=Y ;; 
	-V)	set -x ;;  # verbose 
        -*)     FLAGS="$FLAGS $1" ;; 
        *)      ARG="$1" ;;
     esac
     shift
done

if [ -z "$ARG" ]; then
  echo "usage: zap name"
  exit 1
fi

BSDNL=""; SYSVNL="" ; PSP=""

case `uname` in
   Linux)   BSDNL="-n"
            PS="ps auxw"	
	    PSP=" -f "
	    ;;
   HP-UX)   SYSVNL="\c"
            PS="ps -ef"
	    PSP=" -f -p "
	    ;;
   *)
            PS="ps -aux"
	    PSP=" -f "
echo DEFAULT
	    ;;
esac

# -- Get the list of PID's

LIST=`$PS | grep $FLAGS "$ARG" | grep -v zap | \
	  grep -v grep |tail +1 | awk '{print $2}'`

# -- confirm the kill for each PID

for PROCID in $LIST  
do
  if [ "$FORCE" = "N" ]; then
    if ! ps $PSP ${PROCID} >/dev/null
    then
      continue
    else
      ps $PSP ${PROCID}
      echo $BSDNL "Kill ${PROCID}? [ynq] $SYSVNL"
      read ANS
      if [ -z "$ANS" ]; then
        ANS="y"
      fi
      case $ANS in
	y) kill -9 $PROCID  ;;
	n) ;;
	q) exit 1 ;;
        *) echo "Huh?" ;;
      esac
    fi
  else
    kill -9 $PROCID
  fi
done