[root@ob1 scripts]# vim test_httpd.sh ??1 #!/bin/bash ?2 #ss -tlnup|grep :80 >/dev/null 2>&1 ?3 dk=$(ss -tlnup|awk -F"[ :]+" ‘/80/{print $5}‘) ?4 if [ "80" = "${dk}" ];then ??????????#use string to compare,num is not have null ?5 ????????echo "httpd is running" ?6 else ?7 ????????echo "restarting" ?8 ????????/etc/init.d/httpd restart >/dev/null 2>&1 ?9 fi
如果服务没起就重启,if [ "80" = "${dk}" ];then 在字符串比较80 -eq dk 没起是空的时候报错,写成字符串就不报错应为字符串有空,数字没值会报错
监控http服务脚本
原文地址：http://www.cnblogs.com/gaoyuechen/p/7571426.html