进程pid判断脚本

#!/bin/bash
onl_ok=1
onl_cored=3
dir=/etc/zabbix/sh
if [[ ! -f "$dir/old.txt" ]];then
    ps aux | grep storage | grep -v grep |grep -v probe | grep root | awk '{print $2,$11}' > $dir/old.txt
else
    sleep 1s
fi
    ps aux | grep storage | grep -v grep |grep -v probe | grep root | awk '{print $2,$11}' > $dir/now.txt
if ! diff -q $dir/old.txt $dir/now.txt > /dev/null;then
    echo $onl_cored
    diff -c $dir/old.txt $dir/now.txt > $dir/`date "+%Y%m%d%H%M"`_diff.txt
    cat $dir/now.txt > $dir/old.txt
else
    echo $onl_ok
fi