使用此选项：

service apache2 status

或者这样：

service --status-all | grep apache2

这是一个bash脚本的工作示例，该脚本检查apache状态，如果关闭则自动重新启动，并通过unicode emoji中的telegraph bot发出警报。

#!/bin/bash
telegram=(xxxxx, yyyyyy)

if ! pidof apache2 > /dev/null
then
    # web server down, restart the server
    echo "Server down"
    /etc/init.d/apache2 restart > /dev/null
    sleep 10

    #checking if apache restarted or not
    if pidof apache2 > /dev/null
    then
        for i in "${telegram[@]}"
        do
        curl -s -X POST https://api.telegram.org/botxxxxxx:yyyyyyyyyyyyyyyyyyyyyyyyyy/sendMessage -d chat_id="$i" -d text="`echo -e '\U0001F525'` Apache stoped on Molib Stage. Automatically restarted succesfully."
        done
    else
        for i in "${telegram[@]}"
        do
        curl -s -X POST https://api.telegram.org/botxxxxxx:yyyyyyyyyyyyyyyyyyyyyyyyyy/sendMessage -d chat_id="$i" -d text="`echo -e '\U0001F525'` Apache stoped on Molib Stage. Automatically restart failed. Please check manually."
        done
    fi
fi

试试看吧--这里最简单、最有启发性，而且在Ubuntu 20.04上运行良好：
1.捕获状态到bash变量的输出
1.“if”状态包括子字符串（来自“Active：“语句）-执行您想要的作业
1.“else”-执行您定义的另一项工作

#!/bin/bash
servstat=$(service apache2 status)

if [[ $servstat == *"active (running)"* ]]; then
  echo "process is running"
else echo "process is not running"
fi

这在旧的Debian中是完美的。记住用bash而不是sh运行。
在Centos中，替换为httpd。

#!/bin/bash
if [ $(/etc/init.d/apache2 status | grep -v grep | grep 'apache2 is running' | wc -l) > 0 ]
then
 echo "Process is running."
else
  echo "Process is not running."
fi

尝试grep“apache 2"而不是httpd。为了确保正确，尝试使用下一个命令检查服务，并确定apache Web服务器的注册名称：服务--状态-全部

## Plz run this script .. its working 
------------------------------------------------
ps cax | grep httpd
if [ $? -eq 1 ]
 then
 echo "Process is running."
else if [ $? -eq 0 ]
 echo "Process is not running."
fi
fi
----------------------------------------------

这是菜单驱动的一个停止shell脚本，在其中您可以检查防火墙、Apache或任何其他Web服务，您可以通过选择下面脚本中的选项来启动或停止服务

echo "welcome please select your options"
read choice
firewall=`sudo systemctl status firewalld`
apache=`sudo systemctl status apache2`
firewall1=`sudo systemctl stop firewalld`
apache1=`sudo systemctl stop apache2`
startrfirewall=`sudo systemctl start firewalld`
startapache=`sudo systemctl start apache2`

case $choice in
         1) status of the firewall is $firewall
                          ;;
         2) status of apache is $apache
                          ;;
         3) echo stop firewall by $firewall1
                          ;;
         4) echo stop apache by $apache1
                          ;;
         5) echo start firewall by $startrfirewall
                          ;;
         6) echo start apache by $startapache
                          ;;
         *) echo exit
esac