Valid XHTML 1.0 Transitional改进的 Tomcat 起停脚本

Page: [index.html] (v2017-04-15_19-10)
用 ps 搜索 Tomcat 进程的特征字符串，以此确认 $CATALINA_HOME 下 (而不是其他地方) 的 Tomcat (而不是其他 java 进程) 是否正在运行，并进一步决定 start 、stop 、restart 、restop 时的动作和显示内容：
#! /bin/sh

# chkconfig: 35 96 04
# description: Apache-Tomcat service script.

# Version:
#	2017-05-28_21-10
# By:
#	Typhoon.Free.Wolf.

# ========================================
# MANDATORY variables with CUSTOMIZED values:
	SVC_NAME="Apache-Tomcat";
	LOCK_FILE="/var/lock/subsys/tfw_tomcat";
	START_WAIT_SECONDS=8;
	STOP_WAIT_SECONDS=2;
# ========================================
# CUSTOMIZED variables:
	APP_HOME="/ext/ro1/prog/Tomcat";
	APP_USER="typhoon";
	# PROC_FILTER_CMD="ps aux | grep -v \"grep\" | grep \"catalina.base=$APP_HOME\";";
	# PROC_FILTER_CMD="ps aux";
# ========================================
# MANDATORY Functions with CUSTOMIZED inner content:
	_status() {
		# echo "$PROC_FILTER_CMD";
		# $("$PROC_FILTER_CMD");
		# `"$PROC_FILTER_CMD"`;
		ps aux | grep -v "grep" | grep "catalina.base=$APP_HOME";
		return $?;
	}

	_start() {
		su - "$APP_USER" -c "\"$APP_HOME/bin/startup.sh\"";
		return $?;
	}

	_stop() {
		su - "$APP_USER" -c "\"$APP_HOME/bin/shutdown.sh\"";
		return $?;
	}
# ========================================
# Static common part.
	ARG_TMP=$2;
	if [ -n "$ARG_TMP" ]; then
		# echo "$? Not null, to check whether a number.";
		printf %f "$ARG_TMP" 2>/dev/null 1>&2;
		if [ "$?" -eq 0 ]; then
			# echo "$? Number printable, to check value.";
			if [ $(echo "${ARG_TMP} > 0" | bc) = 1 ]; then
				START_WAIT_SECONDS="$ARG_TMP";
				echo "Starting wait second(s) overrided to $START_WAIT_SECONDS.";
			fi;
		fi;
	fi;

	ARG_TMP=$3;
	if [ -n "$ARG_TMP" ]; then
		# echo "$? Not null, to check whether a number.";
		printf %f "$ARG_TMP" 2>/dev/null 1>&2;
		if [ "$?" -eq 0 ] &&  [ $(echo "${ARG_TMP} > 0" | bc) = 1 ]; then
			# echo "$? Number printable, to check value.";
			# if [ $(echo "${ARG_TMP} > 0" | bc) = 1 ]; then
				STOP_WAIT_SECONDS="$ARG_TMP";
				echo "Stopping wait second(s) overrided to $STOP_WAIT_SECONDS.";
			# fi;
		fi;
	fi;

	# Source function library.
	FUNCTION_LIB_FLAG="Y";
	if [ -f "/etc/init.d/functions" ] ; then
		. "/etc/init.d/functions";
	elif [ -f "/etc/rc.d/init.d/functions" ] ; then
		. "/etc/rc.d/init.d/functions";
	else
		FUNCTION_LIB_FLAG=Y;
	fi;
	# echo $FUNCTION_LIB_FLAG;

	# Template.
	#	Shows OK.
	# Return:
	echo_ok() {
		case $FUNCTION_LIB_FLAG in
			Y)
				echo_success;
				echo "";
			;;
			*)
				echo "";
				echo "	[  OK  ]";
			;;
		esac
	}

	# Template.
	#	Shows Passed.
	# Return:
	echo_pass() {
		case $FUNCTION_LIB_FLAG in
			Y)
				echo_passed;
				echo "";
			;;
			*)
				echo "";
				echo "	[PASSED]";
			;;
		esac
	}

	# Template.
	#	Shows Failed.
	# Return:
	echo_bad() {
		case $FUNCTION_LIB_FLAG in
			Y)
				echo_failure;
				echo "";
			;;
			*)
				echo "";
				echo "	[FAILED]";
			;;
		esac
	}

	status() {
		echo "Service [ $SVC_NAME ] status:";
		_status; STAT=$?;

		if [ $STAT -eq 0 ]; then
			echo "$STAT: Process running...";
		else
			echo "$STAT: Process not found.";
		fi;

		return "$STAT";
	}

	start() {
		echo "Service [ $SVC_NAME ] starting...";
		_status; STAT=$?;

		if [ $STAT -eq 0 ]; then
			STAT=1;
			echo "Already / still running, unable to start again!";
			echo_pass;
		else
			_start; STAT=$?;
			if [ $STAT -eq 0 ]; then
				echo "Waiting $START_WAIT_SECONDS second(s) for starting...";
				sleep $START_WAIT_SECONDS;
				_status; STAT=$?;
				if [ $STAT -eq 0 ]; then
					STAT=0;
					echo "Running, successfully started.";

					touch "$LOCK_FILE"; STAT=$?;
					if [ $STAT -eq 0 ]; then
						echo_ok;
					else
						STAT=1;
						echo "Failed creating lock-file \"$LOCK_FILE\".";
						echo_pass;
					fi;
				else
					STAT=2;
					echo "Not running, failed starting.";
					echo_bad;
				fi;
			else
				STAT=3;
				echo "Failed starting.";
				echo_bad;
			fi;
		fi;

		return "$STAT";
	}

	stop() {
		echo "Service [ $SVC_NAME ] stopping...";
		_status; STAT=$?;

		if [ $STAT -eq 0 ]; then
			_stop; STAT=$?;
			if [ $STAT -eq 0 ]; then
				echo "Waiting $STOP_WAIT_SECONDS second(s) for stopping...";
				sleep $STOP_WAIT_SECONDS;
				_status; STAT=$?;
				if [ $STAT -eq 0 ]; then
					STAT=2;
					echo "Still running, failed stopping.";
					echo_bad;
				else
					STAT=0;
					echo "Not running, successfully stopped.";

					rm -rf "$LOCK_FILE"; STAT=$?;
					if [ $STAT -eq 0 ]; then
						echo_ok;
					else
						STAT=1;
						echo "Failed removing lock-file \"$LOCK_FILE\".";
						echo_pass;
					fi;
				fi;
			else
				STAT=3;
				echo "Failed stopping.";
				echo_bad;
			fi;
		else
			STAT=1;
			echo "Not running / already stopped, unable to stop again!";
			echo_pass;
		fi;

		return "$STAT";
	}

	restart() {
		stop; STAT=$?;
		if [ $STAT -eq 0 -o $STAT -eq 1 ]; then
			start; STAT=$?;
		fi;
		return "$STAT";
	}

	restop() {
		start; STAT=$?;
		if [ $STAT -eq 0 -o $STAT -eq 1 ]; then
			stop; STAT=$?;
		fi;
		return "$STAT";
	}

	RETVAL=0;
	case "$1" in
		stat)
			status;RETVAL=$?;
			;;
		status)
			status;RETVAL=$?;
			;;
		start)
			start;RETVAL=$?;
			;;
		stop)
			stop;RETVAL=$?;
			;;
		restart)
			restart;RETVAL=$?;
			;;
		restop)
			restop;RETVAL=$?;
			;;
		*)
			echo $"Usage: $0 {stat|status|start|stop|restart|restop}";
			RETVAL=2;
	esac;

	exit $RETVAL;
# ========================================







#! /bin/sh

# chkconfig: 35 96 04
# description: Apache-Tomcat service script.

# Version:
#	2017-04-04_12-50
# By:
#	Typhoon.Free.Wolf.

# ========================================
# Customized values:
	SVC_NAME="Apache-Tomcat";
	START_WAIT_SECONDS=10; #1;
	STOP_WAIT_SECONDS=2; #1;
# ========================================
# Customized variables:
	APP_HOME="/ext/ro1/prog/Tomcat";
	APP_USER="typhoon";
	# PROC_FILTER_CMD="ps aux | grep -v \"grep\" | grep \"catalina.base=$APP_HOME\";";
	# PROC_FILTER_CMD="ps aux";
# ========================================
# Functions with customized inner content:
	_status() {
		# echo "$PROC_FILTER_CMD";
		# $("$PROC_FILTER_CMD");
		# `"$PROC_FILTER_CMD"`;
		ps aux | grep -v "grep" | grep "catalina.base=$APP_HOME";
		return $?;
	}

	_start() {
		su - "$APP_USER" -c "\"$APP_HOME/bin/startup.sh\"";
		return $?;
	}

	_stop() {
		su - "$APP_USER" -c "\"$APP_HOME/bin/shutdown.sh\"";
		return $?;
	}
# ========================================
# Static common part.
	expr "$2" "+" 0 2>/dev/null;
	if [ "$?" -eq 0 ]; then
		START_WAIT_SECONDS="$2";
	fi;

	expr "$3" "+" 0 2>/dev/null;
	if [ "$?" -eq 0 ]; then
		STOP_WAIT_SECONDS="$3";
	fi;

	# Source function library.
	FUNCTION_LIB_FLAG="Y";
	if [ -f "/etc/init.d/functions" ] ; then
		. "/etc/init.d/functions";
	elif [ -f "/etc/rc.d/init.d/functions" ] ; then
		. "/etc/rc.d/init.d/functions";
	else
		FUNCTION_LIB_FLAG=Y;
	fi;
	# echo $FUNCTION_LIB_FLAG;

	# Template.
	#	Shows OK.
	# Return:
	echo_ok() {
		case $FUNCTION_LIB_FLAG in
			Y)
				echo_success;
				echo "";
			;;
			*)
				echo "";
				echo "	[  OK  ]";
			;;
		esac
	}

	# Template.
	#	Shows Passed.
	# Return:
	echo_pass() {
		case $FUNCTION_LIB_FLAG in
			Y)
				echo_passed;
				echo "";
			;;
			*)
				echo "";
				echo "	[PASSED]";
			;;
		esac
	}

	# Template.
	#	Shows Failed.
	# Return:
	echo_bad() {
		case $FUNCTION_LIB_FLAG in
			Y)
				echo_failure;
				echo "";
			;;
			*)
				echo "";
				echo "	[FAILED]";
			;;
		esac
	}

	status() {
		echo "Service [ $SVC_NAME ] status:";
		_status; STAT=$?;

		if [ $STAT -eq 0 ]; then
			echo "$STAT: Process running...";
		else
			echo "$STAT: Process not found.";
		fi;

		return "$STAT";
	}

	start() {
		echo "Service [ $SVC_NAME ] starting...";
		_status; STAT=$?;

		if [ $STAT -eq 0 ]; then
			STAT=1;
			echo "Already / still running, unable to start again!";
			echo_pass;
		else
			_start; STAT=$?;
			if [ $STAT -eq 0 ]; then
				_status; STAT=$?;
				if [ $STAT -eq 0 ]; then
					STAT=0;
					echo "Running, successfully started.";
					echo_ok;
				else
					STAT=2;
					echo "Not running, failed starting.";
					echo_bad;
				fi;
			else
				STAT=3;
				echo "Failed starting.";
				echo_bad;
			fi;
		fi;

		return "$STAT";
	}

	stop() {
		echo "Service [ $SVC_NAME ] stopping...";
		_status; STAT=$?;

		if [ $STAT -eq 0 ]; then
			_stop; STAT=$?;
			if [ $STAT -eq 0 ]; then
				sleep $STOP_WAIT_SECONDS;
				_status;STAT=$?;

				if [ $STAT -eq 0 ]; then
					STAT=2;
					echo "Still running, failed stopping.";
					echo_bad;
				else
					STAT=0;
					echo "Not running, successfully stopped.";
					echo_ok;
				fi;
			else
				STAT=3;
				echo "Failed stopping.";
				echo_bad;
			fi;
		else
			STAT=1;
			echo "Not running / already stopped, unable to stop again!";
			echo_pass;
		fi;

		return "$STAT";
	}

	restart() {
		stop; STAT=$?;
		if [ $STAT -eq 0 -o $STAT -eq 1 ]; then
			start; STAT=$?;
		fi;
		return "$STAT";
	}

	restop() {
		start; STAT=$?;
		if [ $STAT -eq 0 -o $STAT -eq 1 ]; then
			if [ $STAT -eq 0 ]; then
				sleep $START_WAIT_SECONDS;
			fi;
			stop; STAT=$?;
		fi;
		return "$STAT";
	}

	RETVAL=0;
	case "$1" in
		stat)
			status;RETVAL=$?;
			;;
		status)
			status;RETVAL=$?;
			;;
		start)
			start;RETVAL=$?;
			;;
		stop)
			stop;RETVAL=$?;
			;;
		restart)
			restart;RETVAL=$?;
			;;
		restop)
			restop;RETVAL=$?;
			;;
		*)
			echo $"Usage: $0 {stat|status|start|stop|restart|restop}";
			RETVAL=2;
	esac;

	exit $RETVAL;
# ========================================

遗留问题：
在脚本中无论使用“$("$PROC_FILTER_CMD")”还是“`"$PROC_FILTER_CMD"`”，均报“ps command not found”，无法将进程探测命令参数化。