Check file system space script

Method - 1:

Disk Space Check
=================

# Check the filesystem

df -h

# Remove un-wanted rows

df -h | egrep -v "Filesystem|tmpfs"

# Get 5th and 6th column

df -h | egrep -v "Filesystem|tmpfs" | awk '{print $5, $6}'

df -h | egrep -v "Filesystem|tmpfs" | awk '{print $5}' | cut -d'%' -f1`

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First For loop script

vi checkdisk

#!/bin/bash

a=`df -h | egrep -v "tmpfs|devtmpfs" | tail -n+2 | awk '{print $5}' | cut -d'%' -f1`

for i in $a
do
        if [ $i -ge 50 ]
        then
        echo Check disk space $i `df -h | grep $i`
        fi
done

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Method - 2:

#!/bin/sh

df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{print $5,$1}' | while read output
do
        usep=$(echo $output | awk '{print $1}' | cut -d'%' -f1  )
        partition=$(echo $output | awk '{print $2}' )
       
        if [ $usep -ge 90 ]
        then
        echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)"
        fi
done

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Method - 3 (simple method):

#Write a script to awk only those rows with the value

#!/bin/sh

df -h | awk '0+$5 >= 10 {print}'

To make it presentable

echo
echo Following is the disk space status
echo
df -h | awk '0+$5 >= 10 {print}' | awk '{print $5, $6}'