shell腳本循環判斷程序是否存在

#!/bin/sh

02

03	while true

04

do

05	process=` ps aux |  grep mysqld |  grep - v grep `;

06

07	if [  "$process" ==  "" ];  then

08

sleep 1;

09	echo "no process" ;

10

else

11	echo "process exsits" ;

12

break ;

13

fi

14

done