Linux 一个sysv 脚本参考模板

说明：

　  1.很多时候我们的服务都是通过源码包编译安装，但是有的源码包编译完成后并不提供该服务的sysv风格脚本，我们只能手动执其二进制程序+配置文件

     2.如果服务器宕机或重启，就不能自动完成启动，所以我们需要自己来编写脚本并把它放到/etc/init.d/目录，并使用chkconfig --add $service 加入开机启动列表

     3.以下脚本是httpd的一个sysv脚本，不过所有的基本sysv风格脚本都一个风格，你只需要把对httpd的判断改成对你编译的程序判断即可

     4.此脚本也可以source /etc/init.d/functions 脚本，functions为我们提供了三个常用的功能，不过以下的这个脚本没有source

　　　　a.输出打印显示为统一格式

           b.daemon 函数  Usage: daemon [+/-nicelevel] {program} 可以向其传递选项 常用的 --user， --pidfile

               例: daemon --user=mysql  /usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf

　　　　c.killproc 函数 Usage: killproc [-p pidfile] [ -d delay] {program} [-signal]

               例：killproc -p /var/run/mysql /usr/local/mysql/bin/mysqld -HUP  # reload 功能

     5.开启服务程序的reload功能需要，此服务的二进制程序支持接SIGHUP，否则向此服务发出sighup，只能关闭进程，而不能重读配置文件，httpd能够接收hup信号

 #!/bin/bash
 #
 # HTTPD 2.4: Start up the Atlas server daemon
 # chkconfig
 # discription: Apache web server for linux
 # author:
 #    QQ:
 #    mail: login_532_gajun@sina.com

 install_dir=/usr/local/apache24/instance/httpd80
 apachectl=$install_dir/bin/apachectl
 binfile=$install_dir/bin/httpd
 pidfile=$install_dir/run/httpd.pid
 confile=$install_dir/etc/httpd24/httpd.conf
 lockfile=$install_dir/lock/httpd
 prog=${install_dir##*/}

 function start()
 {
     if ps -ef | grep "$binfile -f $confile" | grep -q -v "grep" && [ -f $lockfile ];then
         echo -e "\033[32mNotice: $prog is running now\033[0m"
         return
     else
         $binfile -f $confile
             if ps -ef | grep "$binfile -f $confile" | grep -q -v "grep";then
                 touch $lockfile
                  echo -e "\033[32mOK: $prog is started\033[0m"
                 return
             else
                 echo -e "\033[31mError: Failed to start $prog\033[0m"
                 return
             fi
     fi
 }

 function stop()
 {

     if ps -ef | grep "$binfile -f $confile" | grep -q -v "grep" && [ -f $lockfile ];then
          ps -ef | grep "$binfile -f $confile" | grep -v "grep" | awk '{print $2}' | xargs kill - > /dev/null >&
             if [ $? -eq  ];then
                 rm -f $lockfile
                 echo -e "\033[32mOK: $prog is stopped\033[0m"
                 return
             else
                 echo -e "\033[31mError: Failed to stop $prog\033[0m"
                 return
             fi
     else
         echo -e "\033[31mWarning: $prog is not running\033[0m"
         return
     fi
 }

 function restart()
 {
     stop
     sleep
     start
 }

 function status()
 {
     if ps -ef | grep "$binfile -f $confile" | grep -q -v "grep" && [ -f $lockfile ];then
         ps -ef | grep "$binfile -f $confile" | grep -v "grep" | awk '{print $2}' | while read httpd_pid;do
             echo -e "\033[32mOK: $prog is running ($httpd_pid)\033[0m"
         done
         return
     else
         echo -e "\033[31mWarning: $prog is not running\033[0m"
         return
     fi
 }

 function configtest()
 {
     $apachectl -t -f $confile
 }

 function reload()
 {
     status &> /dev/null
     if [ $? -eq  ];then
         if $apachectl -t -f $confile &> /dev/null;then
             ps -ef | grep "$binfile -f $confile" | grep -v "grep" | awk '$1 == "root"{print $2}' | while read httpd_root_pid;do
                 kill -HUP $httpd_root_pid
             done
             if [ $? -eq  ] && ps -ef | grep "$binfile -f $confile" | grep -q -v "grep";then
                 echo -e "\033[32mOK: reload $prog is successful\033[0m"
                 return
             else
                 echo -e "\033[31mError: Failed to reload $porg\033[0m"
                 return
             fi
         else
             echo -e "\033[31mError: not reloading $prog due to configuration syntax error\033[0m"
             return
         fi
     else
         start &> /dev/null
         if [ $? -eq  ];then
             echo -e "\033[32mOK: reload $prog is successful\033[0m"
             return
         else
             echo -e "\033[31mError: Failed to reload $porg\033[0m"
             return
         fi
     fi
 }        

 case $ in
 start)
     start
     if [ $?    -eq  ];then
         exit
     fi
     ;;

 stop)
     stop
     if [ $?    -eq  ];then
         exit
     fi
     ;;

 restart)
     restart
     if [ $? -eq  ];then
         exit
     fi
     ;;

 reload)
     reload
     if [ $? -eq  ];then
         exit
     fi
     ;;

 status)
     status
     ;;

 configtest)
     configtest
     ;;

 *)
     echo -e "\033[31mUsage: `basename $0` {start|stop|restart|reload|status|configtest}\033[0m"
     exit
 esac