Shell脚本判断Apache进程是否存在

#!/bin/bash

#echo "$(service httpd status)"

PIDNUM=$(pgrep httpd | wc -l)

if [[ $PIDNUM -eq 0 ]];then

        echo "Apache is stopped."

        read -p "Do you want to start Apache?(y/n)" START

        if [[ $START == y ]];then

                echo "$(service httpd start)"

        else 

                echo "You refused to start Apache."

        fi    

else 

        echo "Apache is running. Proccess number is $PIDNUM."

        if [[ $PIDNUM != 10 ]];then

                echo -e "\033[31mPID didn't equal 10\033[0m"

        fi  

fi