#!/bin/sh

# zap, kills processes that match strings on command line, queries for confirm
#  if no -signal is give as $1
# /kc ken chase mathboy@sizone.org 


# v0.001 summer 1994
# v0.002 spring 1995
# v0.003 summer 1996
# v0.004 fall 1996
# v0.005 apr 1997
# v.0006 aug 1997

if [ "$1" = "" ] || [ "$0" = "-h" ]; then
  echo "ZAP -- GPL'd -- by Ken Chase math @ sizone . org"
  echo "usage: $0 {command} [command2 [command3 .. ]]"
  echo "  will kill procs from ps -axw table matching strings on command line"
  echo "   querying for confirmation of kill"
  exit
fi

# check if there's a signal given on cmd line so we can have unattended op.
manual=1
if [ "`echo $1 | cut -c1`" = "-" ]; then
  signal=$1
  unset manual
  shift
fi
  
# grab all remaining command args
b=$*

# turn spaces into |s for egrep, and turn (s and )s into \(s and \)s so we
#  can even zap '(swapped out)' procs by specifying () on cmd line
#  and have (s protected from egrep
a=`echo $b |
   sed 's/(/\\\(/g' |
   sed 's/)/\\\)/g' |
   tr ' ' '|'`

echo Finding "($a)"

# real fucking stupid to do this kludge - 'for i' will parse on every
#  space returned from ps -auxw, cant keep it in integral lines - if we
#  set IFS to " " then we cant use `command | command`
# so instead have to grep for commands, pull procid and regrep for procid
#  I guess that zapping a grep wont work since we have to reject grepping on
#  grep or on zap itself

# show matching commands in full ps -axw style
ps -axw | egrep "($a)" | egrep -v '(grep|zap)'
echo

for i in `ps -axw | egrep "($a)" | egrep -v "(grep|zap)" | awk '{print $1}'`
do
  #echo $i
  c=`ps auxw | egrep "^ *[a-z]+ *"$i | egrep -v "(grep|zap)"`

  if [ "$manual" ]; then
    if [ "$c" != "" ]; then
      echo -n zap: $c '? '
      read signal
      manual=1
      signal="-"$signal
    fi
  fi
  if [ "$signal" != "n" ] && [ "$signal" != "" ]; then
    signal=`echo $signal | tr "[a-z]" "[A-Z]"`
    case $signal in
      "-y")	k='-15';;
      "-yes")	k='-15';;
      *)	k=$signal
    esac

echo "signal given was '$signal'='$k'"

    if [ "$k" != "-n" ] && [ "$k" != "-no" ]; then
      echo "Killing $k $i"
      kill $k $i
      echo
    fi
  fi
done