[assignments.git] / assgn3 / process-pid.sh

#!/usr/bin/env bash

USAGE="usage: ./process-pid.sh {[-h, -a], [-f, -e] <pid>}, -s <regexp>"

if [ -z "$1" ]; then
	echo "$USAGE"; exit 1

elif [[ "$1" =~ ^-?[0-9]+$ ]]; then # unportable :(
	if `ps $1 > /dev/null 2>&1`; then
		echo "you win!"; exit 0

	else
		echo -ne "invalid pid\n$USAGE"; exit 1
	fi

elif [[ "$1" -eq "-h" ]]; then
	echo "$USAGE"; exit 0 
fi
Commit	Line	Data
bfcad051	1	#!/usr/bin/env bash
bfcad051	2
8fbe044c	3	USAGE="usage: ./process-pid.sh {[-h, -a], [-f, -e] <pid>}, -s <regexp>"
	4
	5	if [ -z "$1" ]; then
	6	echo "$USAGE"; exit 1
	7
	8	elif [[ "$1" =~ ^-?[0-9]+$ ]]; then # unportable :(
	9	if `ps $1 > /dev/null 2>&1`; then
	10	echo "you win!"; exit 0
	11
	12	else
	13	echo -ne "invalid pid\n$USAGE"; exit 1
	14	fi
	15
	16	elif [[ "$1" -eq "-h" ]]; then
	17	echo "$USAGE"; exit 0
bfcad051	18	fi