#!/bin/bash

LOCK_DIR=/var/lock
LOCK_DIR=/tmp/sumsel

#BASENAME=$(basename "$0")
#LOCK_FILE="${LOCK_DIR}/${BASENAME}"

function set_lockfile {
	BASENAME=$(basename "$0")
	LOCK_FILE="${LOCK_DIR}/${BASENAME}"
	RANDOM_FILE=$(mktemp --tmpdir=${LOCK_DIR})
	echo ${RANDOM_FILE}
	echo $$ > ${RANDOM_FILE}
	mv -n ${RANDOM_FILE} ${LOCK_FILE}

	if [ -e ${RANDOM_FILE} ] ; then
		#rm ${RANDOM_FILE}
    		echo "Failed to acquired lock"
		OTHER_PID=$(cat ${LOCK_FILE})
		
	else
    		echo "Acquired lock"
	fi
}

function del_lockfile {
	LOCK_FILE="${LOCK_DIR}/${BASENAME}"
	rm ${LOCK_FILE}
}

set_lockfile
del_lockfile