Linux disk space Alert script

1. Must function:

[[email protected] ~]# DF

File system 1k-block already used% mount point available

/dev/mapper/volgroup00-logvol00

11109328 2154636 8381252 21%/

/DEV/SDA1 101086 11999 83868 13%/boot

Tmpfs 1037748 0 1037748 0%/dev/shm

[[email protected] ~]# DF | Sed-n '/\/$/P '

11109328 2154636 8381252 21%/

/$: Represents a line that ends with a slash (/) ($)

[[email protected] ~]# DF | Sed-n '/\/$/p ' | Gawk ' {print $4} '

21%

$4: Indicates a fourth field is printed

[[email protected] ~]# DF | Sed-n '/\/$/p ' | Gawk ' {print $4} ' |sed 's/%//'

21st

S: replace

s/%//: means replacing the percent sign with empty

2. Create a script

Create a script that sends an alert message to Ley users when/when the space exceeds 10%

#!/bin/bash

#monitor Available disk space

s='DF | Sed-n '/\/$/p' | Gawk '{print $4}'|sed 's/%//'

If [$s-ge 10]

Then

echo "$s% userd" | Mail-s "Disk warning" Ley

Fi

~

Ley user must be a user present in the system

******************************************************************************************

[[Email protected] ~]$ Mail view message

Mail version 8.1 6/6/93. Type? For help.

"/var/spool/mail/ley": 5 messages 5 new

>n 1 [email protected] Wed Nov 5 17:02 16/654 "Disk Warning"

N 2 [email protected] Wed Nov 5 17:02 16/654 "Disk Warning"

N 3 [email protected] Wed Nov 5 17:04 16/654 "Disk Warning"

N 4 [email protected] Wed Nov 5 17:04 16/654 "Disk Warning"

N 5 [email protected] Wed Nov 5 17:04 16/654 "Disk Warning"

&

Message 1: The first piece of information

From [email protected] Wed 5 17:02:16 2014

date:wed, 5 Nov 2014 17:02:16 +0800

From:root <[email protected]>

To: [Email protected]

Subject:disk Warning

21% UserD

This article is from the Linux Operations sharing blog, so be sure to keep this source http://liangey.blog.51cto.com/9097868/1572228

Linux disk space Alert script