script to quickly list find and kill processes

pss

#/bin/bash
help() {
	echo "pss [command [option]]+ -- quickly list, find and kill processes"
	echo "commands:"
	echo "  h -- help"
	echo "  g X -- grep X"
	echo "  gi X -- grep -i X (ignore case)"
	echo "  gv X -- grep -v X (show non-matching)"
        echo "  g2 X Y -- grep for X or Y (also g3, g4)"
	echo "  k -- kill"
	echo "  k9 -- kill -9"
	echo "  pid -- extract PID (2nd col)"
	echo "  j -- grep [j]ava"
	echo "  jg X -- j g X"
	echo "  jj -- j then filter useful args"
	echo ""
	echo "examples (showing some which can be combined):"
	echo "  pss jj gi test -- summary info of tests running"
	echo "  pss jg jboss k -- kill all jboss java instances"
	echo "  pss g3 java mysql nginx -- see what 3-tier software we have running"
        echo "  pss g3 java mysql nginx k9 - force kill all instances of these guys"
}

doGrep() {
	X2=(`grep "$@" <<<"${X[*]}"`)
	X=(${X2[@]})
}

PID_COL=2
pid() {
	if [[ -z "$PID" ]]; then
		PID=true
		X2=(`awk '{print $'$PID_COL'}' <<<"${X[*]}"`)
		IFS=" "
		X=(${X2[*]})
	fi
}

filterJavaArgs() {
	if [[ -z "$FILTER" && -z "$PID" ]]; then
		PID_COL=1
		X2=(`awk '{ x=$2" "$11; for (i=12; i<=NF; i++) { 
			skip=0;
			if (substr($i,1,2)=="-D") skip=1;
			else if (substr($i,1,2)=="-X") skip=1;
			else if ($i=="-jar") skip=1;
			else if (substr($i,1,10)=="-classpath") skip=2;
			else if (substr($i,1,3)=="-cp") skip=2;
			else if (substr($i,1,2)=="--") skip=2;
			if (skip==0) x=x" "$i 
			else i+=(skip-1)
		}; print x }' <<<"${X[*]}"`)
		X=(${X2[*]})
	fi
}

CRLF="
"
run() {
	IFS=$'\n'
	PS=(`ps auxwww`)
	X=(${PS[@]})
	while [[ ! -z "$1" ]] ; do
		if [[ "$1" == "g" ]] ; then doGrep "$2" ; shift 2 ;
		elif [[ "$1" == "g2" ]] ; then doGrep -i "$2$CRLF$3" ; shift 3 ;
		elif [[ "$1" == "g3" ]] ; then doGrep -i "$2$CRLF$3$CRLF$4" ; shift 4 ;
		elif [[ "$1" == "g4" ]] ; then doGrep -i "$2$CRLF$3$CRLF$4$CRLF$5" ; shift 5 ; 
		elif [[ "$1" == "gi" ]] ; then doGrep -i $2 ; shift 2 ;
		elif [[ "$1" == "gv" ]] ; then doGrep -v $2 ; shift 2 ;
		elif [[ "$1" == "j" ]] ; then doGrep "[j]ava" ; shift 1 ;
		elif [[ "$1" == "jg" ]] ; then doGrep "[j]ava" ; shift 1 ; doGrep $2 ; shift 2 ;
		elif [[ "$1" == "jj" ]] ; then doGrep "[j]ava" ; filterJavaArgs ; shift 1 ;
		elif [[ "$1" == "pid" ]] ; then pid ; shift 1 ;
		elif [[ "$1" == "k" ]] ; then pid ; [[ -z "$X" ]] || kill ${X[*]} ; shift 1 ;
		elif [[ "$1" == "k9" ]] ; then pid ; [[ -z "$X" ]] || kill -9 ${X[*]} ; shift 1 ;
		else
			ERROR="pss -- illegal option  $1"
			echo $ERROR
			echo "use  pss h  for help"
			shift $#
		fi
	done
	if [[ -z "$ERROR" ]]; then
		echo "${X[*]}"
	fi
}

if [[ -z "$1" || "$1" == "h" || "$1" == "-h" || "$1" == "--help" ]] ; then
	help
else 
	run $@
fi