find string inside a gzipped file in a folder

Question

My current problem is that I have around 10 folders, which contain gzipped files (around on an average 5 each). This makes it 50 files to open and look at.

Is there a simpler method to find out if a gzipped file inside a folder has a particular pattern or not?

zcat ABC/myzippedfile1.txt.gz | grep "pattern match"
zcat ABC/myzippedfile2.txt.gz | grep "pattern match"

Instead of writing a script, can I do the same in a single line, for all the folders and sub folders?

for f in `ls *.gz`; do echo $f; zcat $f | grep <pattern>; done;

Answer 1

use the find command

find . -name "*.gz" -exec zcat "{}" + |grep "test"

or try using the recursive option (-r) of zcat

Answer 2

You don't need zcat here because there is zgrep and zegrep.

If you want to run a command over a directory hierarchy, you use find:

find . -name "*.gz" -exec zgrep ⟨pattern⟩ \{\} \;

And also “ls *.gz” is useless in for and you should just use “*.gz” in the future.

Answer 3

zgrep will look in gzipped files, has a -R recursive option, and a -H show me the filename option:

zgrep -R --include=*.gz -H "pattern match" .