CODEWITHSUNDEEP
shell
user3600858
user3600858

Reputation: 11

Shell Script - single line - expr command

I am using this 3 line shell script and it works to compare 2 files sizes.

FIRSTV=`stat -c%s crk03-rtr-002-20140504.rsc`
SECONDV=`stat -c%s crk03-rtr-002-20140503.rsc`
echo `expr $FIRSTV - $SECONDV`

If there a way I could do this on 1 line using expr or a better command which can tell me the number of bytes differnce between 2 files?

L

Upvotes: 1

Views: 153

Answers (1)

anubhava
anubhava

Reputation: 785176

Yes you can do:

expr `stat -c%s crk03-rtr-002-20140504.rsc` - `stat -c%s crk03-rtr-002-20140503.rsc`

In BASH/ksh/dash and few more shells you can make use of (( )) (arithmetic evaluation brackets):

echo $(( $(stat -c%s crk03-rtr-002-20140504.rsc) - $(stat -c%s crk03-rtr-002-20140503.rsc) ))

Upvotes: 1

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