IF语句小练习
判断内存小于100，邮件报警[root@shnne ~]# sh baojing.sh
the mem is 570,it's ok.
[root@shnne ~]# vim baojing.sh
#!/bin/sh
memvalue=`free -m|awk 'NR==3 {print $...
比较两个整数的大小
#!/bin/sh
#defined the number
read -p "please input two number:" a b
[ -z "$a" ] || [ -z "$b" ] && {
&n...