script problem

[othermike]

i can not understand why the command after else never executed even if the size is less than num

#! /bin/bash

num="63%"
size=$(df -h |grep home|awk -F " " '{print $5}')

if [ "$size">="$num" ];then
echo $size
echo "toto"
else
echo "sorry"
echo $num
fi;


please help me

[nmset]

$size and $num are string values and are not friendly to arithmetics. You must strip the '%' sign from them.

Use ' -gt ' instead instead of '>=' for integer comparison.

[othermike]

but you must know that the resuld of size is in percentage

size=$(df -h |grep home|awk -F " " '{print $5}')
(this command gives the result in %)

so how can i compare those two percentage values?

[nmset]

You must strip the '%' sign

...
num=62
...
size=${size%'%'} #HERE YOU KEEP EVERYTHING EXCEPT THE LAST CHARACTER
...
if [ $size -gt $num ]; then
...

[othermike]

thanks a lot ,every thing is ok. now can i have your mail in order to keep in touch

[nmset]

Loooooooooool !