思路：for循环判断出四种磁盘使用情况，并根据四种情况赋值case语句进行邮箱报警。
#!/bin/bash
LANG=EN
dir=/tmp/disk
d=`date +%F`
py_dir=/usr/local/mail.py #定义python路径
e_mail=abc@123.com #邮箱地址
[ -d $dir ] || mkdir $dir #判断目录是否存在
date +%F/%T >> $dir/$d.log
df -h >> $dir/$d.log
df -i >> $dir/$d.log #记录日志
tag1=0
tag2=0
for i in `df -h |grep -vi ‘use%‘|awk -F ‘ +|%‘ ‘{print $5}‘ `
#for循环查看磁盘空间use值大于等于85%的目录挂载
do
if [ $i -ge 85 ];then
tag1=1
break #遍历挂载点有一个符合就退出循环
fi
done
for j in `df -i |grep -vi ‘use%‘|awk -F ‘ +|%‘ ‘{print $5}‘`
#for循环查看磁盘inode点use值大于等于85%的目录挂载
do
if [ $j -ge 85 ];then
tag2=1
break#遍历挂载点有一个符合就退出循环
fi
done
tag=0
if [ "$tag1" -eq 0 ] && [ "$tag2" -eq 0 ];then#判断四种情况并且给tag赋值
tag=0
elif [ "$tag1" -eq 1 ] && [ "$tag2" -eq 1 ];then
tag=1
elif [ "$tag1" -eq 1 ] && [ "$tag2" -eq 0 ];then
tag=2
else
tag=3
fi
case $tag in
1)
python $py_dir $e_mail "disk and inode is full!" "`tail $dir/$d.log`"#发送邮箱报警
;;
2)
python $py_dir $e_mail "disk is full!" "`tail $dir/$d.log`"
;;
3)
python $py_dir $e_mail "inode is full!" "`tail $dir/$d.log`"
;;
0)
echo "do noting! "
;;
*)
python $py_dir $e_mail "$0 is malfuction!" "please login your server and check out !"
;;
esac
使用：crontab -e 0 8 * * * /bin/bash disk_check.sh
原文：https://blog.51cto.com/11594671/2545853