Re: How to compare a .gz and a txt file

[Davide Brini]

On Wednesday 19 May 2010 10:07:27 Peng Yu wrote:

> Suppose I have a file xxx.txt.gz and a file xxx.txt, I'm wondering how
> to compare the content inside xxx.txt.gz with xxx.txt without first
> explicitly gunzip xxx.txt.gz (I want to avoid creating a temp file
> because both xxx.txt.gz and xxx.txt are huge). Is there just one
> command allowing me to compare xxx.txt.gz and xxx.txt?

You don't need a temporary file. You can do

gunzip -c xxx.txt.gz | diff xxx.txt -

or with bash

diff xxx.txt <(gunzip -c xxx.txt.gz)

Another option would be to use zdiff that comes with gzip.

-- 
D.