Shell - Start and Stop a application on Linux

	#!/bin/sh
	#
	# This is the shell script to release for something.
	#
	###############
	# -eq -> ==
	# -ne -> !=
	# -gt -> >
	# -lt -> <
	# -ge -> >=
	# -le -> <=
	################
	APP_NAME=test
	# Check the process count
	APP_CNT=`/bin/ps -ef | /bin/grep "${APP_NAME}" | /bin/grep -v "grep\|init.d" -c`
	if [ ${APP_CNT} -gt 0 ]; then
	echo "${APP_NAME} is already runing..."
	exit 1
	fi
	echo ${APP_CNT}
	case "$1" in
	start)
	printf "%-50s" "Starting $NAME..."
	/etc/init.d/${APP_NAME} start
	RETVAL=$?
	if [ $RETVAL -eq 0 ]; then
	echo "successful start"
	else
	echo "failure starting"
	fi
	;;
	stop)
	printf "%-50s" "Starting $NAME..."
	/etc/init.d/${APP_NAME} stop
	RETVAL=$?
	if [ $RETVAL -eq 0 ]; then
	echo "successful stop"
	else
	echo "failure stopping"
	fi
	;;
	*)
	echo "Usage: $0 {start|stop}"
	exit 1
	esac

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