创建Linux 进程启动脚本

在上一篇文章 http://blog.chinaunix.net/uid-25266990-id-3477710.html （一个简单的进程监控脚本） 关于每天凌晨自动重启脚本/usr/local/scripts/restart_r.sh，由于该脚本只有重启进程的功能，在使用过程中有很多局限性。

为了能够实现Linux中类似网卡启动：server network {start|stop|restart|reload|status}功能，在/etc/init.d/中添加了receve 启动脚本，内容为：

#!/bin/sh

# Start or stop receve

# chkconfig:345 89 17

# description: "receve.php"

# Source function library

if [ -f /etc/rc.d/init.d/functions ]; then

. /etc/rc.d/init.d/functions

elif [ -f /etc/init.d/functions ]; then

. /etc/init.d/functions

elif [ -f /etc/rc.d/functions ]; then

. /etc/rc.d/functions

fi

#定义启动关闭时,会显示是否Ok,并有颜色提示.

BOOTUP=color

MOVE_TO_COL="echo -en \\033[60G"

SETCOLOR_SUCCESS="echo -en \\033[1;32m"

SETCOLOR_FAILURE="echo -en \\033[1;31m"

SETCOLOR_WARNING="echo -en \\033[1;33m"

SETCOLOR_NORMAL="echo -en \\033[0;39m"

#ok 为绿色

function echo_success() {

   [ "$BOOTUP" = "color" ] && $MOVE_TO_COL

   echo -n "["

   [ "$BOOTUP" = "color" ] && $SETCOLOR_SUCCESS

   echo -n $"  OK  "

   [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL

   echo -n "]"

   echo -ne "\r"

   echo -e "\n"

   return 0

 }

#failed为暗红色

function echo_failure() {

   [ "$BOOTUP" = "color" ] && $MOVE_TO_COL

   echo -n "["

   [ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE

   echo -n $"FAILED"

   [ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL

   echo -n "]"

   echo -ne "\r"

   echo -e "\n"

   return 1

 }

#判断进程的运行状态,并记录PID,我运行着两个进程,所以要记录多次.

function isrun

{

       numpro=`/bin/ps -ef | grep "receve.php" | grep -v 'grep'|uniq|wc  -l`

       if [ $numpro -ge 1 ];then

               export numpro

               /bin/ps -ef | grep "receve.sh" | grep -v 'grep'|grep -v  grep |awk '{print $2}' >/var/run/receve.pid

               /bin/ps -ef | grep "receve.php" | grep -v 'grep'|grep -v  grep |awk '{print $2}' >>/var/run/receve.pid

               export run=1

       else

               export run=0

       fi

}

#需要运行的脚本

RETVAL=0

ShellBin="/usr/local/scripts/receve.sh"

LockFile=/var/lock/subsys/receve

# See how we were called.

#启动

start() {

    isrun

    if [ $run -eq 0 ];then

       # Start receve.php.

       if [ ! -f $ShellBin ];then

          echo "FATAL: No such programme";exit 4;

       fi

       echo -n "Starting receve: "

       $ShellBin &

       RETVAL=$?

       if [ $RETVAL -eq 0 ] ;then

               touch $LockFile

               echo_success

       else

               echo_failure

       fi

       return $RETVAL

   else

       echo "receve always on!"

   fi

}

#关闭

stop() {

   isrun

   if [ $run -eq 1 ];then

       # Stop receve.php.

       echo -n $"Shutting down receve: "

       for i in `cat /var/run/receve.pid`

       do

               kill  -9  $i

       done

       RETVAL=$?

       if [ $RETVAL -eq 0 ] ;then

               rm -f $LockFile

               echo_success

       else

               echo_failure

       fi

       return $RETVAL

   else

       echo "receve always off!"

   fi

}

# call the function we defined

case "$1" in

 start)

       start

       ;;

 stop)

       stop

       ;;

 restart|reload)

       stop

       start

       RETVAL=$?

       ;;

 status)

       status  receve

       RETVAL=$?

       ;;

 *)

       echo $"Usage: $0 {start|stop|restart|reload|status}"

       exit 2

esac

exit $RETVAL

给脚本加执行权限:

# /bin/chmod +x /etc/init.d/receve

用chkconfig添加自动启动:

# /sbin/chkconfig --add receve

# /sbin/chkconfig receve on