#!/bin/sh

#
# The first argument is the time to wait, the remaining
# arguments constitute the command to be issued
#
date
uname -n
#set -x
#set -v
set -m
TimeOut=${1}
myPID=$$
ThePPID=$myPID
psopt=''
shift 1
FullCommand=$@
LinuxTest=`uname -s | grep Linux` 
if [ "${LinuxTest}" != "" ]
then
    psopt='-w'
fi
CommandName=`echo $@ | cut -f1 -d' '`
ICommandName=${CommandName}
if [ "${CommandName}" = "time" ]
then
    shift 1
fi
CommandName=${1}
Command=$@


${FullCommand} &
RetCode=$?
sleep 1
if [ "${ICommandName}" = "time" ]
then
    ps_time=`ps -u $USER $psopt -o "pid,ppid,args" | \
	grep " time $CommandName" | \
	grep $myPID | grep -v $0 | grep -v grep`
    if [ "${ps_time}" = "" ]
    then
	echo ${FullCommand}
	echo "    has terminated before timing could begin"
	exit
    fi
    set ${ps_time}
    ThePPID=${1}
fi
ps_info=`ps -u $USER $psopt -o 'pid,ppid,args' | grep " $Command" | \
	grep ${ThePPID} | grep -v grep | grep -v $0 |grep -v " time "`
if [ "${ps_info}" = "" ]
then
    echo "ps failure"
    ps -u $USER -o 'pid,user,args'
    sleep ${TimeOut}
    exit ${RetCode}
fi
set ${ps_info}

Pid=${1}

Time=${TimeOut}

incr=5
[ ${TimeOut} -gt 500 ] && incr=10
[ ${TimeOut} -gt 1000 ] && incr=20

while [ ${Time} -gt 0 ]
do
    if [ "`ps -p ${Pid} $psopt -o 'pid,args' | \
		grep $CommandName`" != "" ]
    then
	Time=`expr ${Time} - ${incr}`
	sleep ${incr}
    else
	exit ${RetCode}
    fi
done

if [ "`ps -p ${Pid} $psopt -o 'pid,args' | \
	grep $CommandName`" != "" ]
then
    echo "============================================================"
    echo "="                              
    echo "= ${0}: ${Command} has exceeded "
    echo "="
    echo "= ${TimeOut} seconds elapsed time. It is being killed."
    echo "="
    echo "============================================================"
    kill -9 ${Pid}
    exit 3
else
    exit ${RetCode}
fi