find string inside a gzipped file in a folder

gagneet_35416 0
Viewed 89358

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;
gzip grep shell directory linux
8 Answers

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" .

OS specific commands as not all arguments work across the board:

Mac 10.5+: zgrep -R --include=\*.gz -H "pattern match" .

Ubuntu 16+: zgrep -i -H "pattern match" *.gz

user_143430

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.

sgm_398920

how zgrep don't support -R

I think the solution of "Nietzche-jou" could be a better answer, but I would add the option -H to show the file name something like this 

find . -name "*.gz" -exec zgrep -H 'PATTERN' \{\} \;
user_3213470

use the find command

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

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

user_1315270

find . -name "*.gz"|xargs zcat | grep "pattern" should do.

user_28299880

zgrep "string" ./*/*

You can use above command to search for string in .gz files of dir directory where dir has following sub-directories structure:

/dir
    /childDir1
              /file1.gz
              /file2.gz
    /childDir2
              /file3.gz
              /file4.gz
    /childDir3
              /file5.gz
              /file6.gz
user_35004720

You can use this command -

zgrep "foo" $(find . -name "*.gz")
user_51579980
Related