CODEWITHSUNDEEP
linuxbashshellunixgrep
1252748
1252748

Reputation: 15372

Find, grep gzipped file

I want to do grep some lines from files I'm finding with the find command. The files are zipped though. How can I find them, de-compress them, do my grep search and put my results into a new file.

zcat find /my_home -name '*log.20140226*' | grep 'vid=123'

is not working, give the error:

 gzip: invalid option -- 'e'
 Try `gzip --help' for more information.

I assume though that if it were working, to save I should add 

> ~/found_logs.20140226.txt

Is this correct?

What is wrong with my zcat and grep string?

Upvotes: 0

Views: 1897

Answers (3)

Mark Setchell
Mark Setchell

Reputation: 207455

Use this:

find /my_home -name '*log.20140226*' -exec zgrep -H 'vid=123' {} \; > results

Or, if you want to find files with lines containing your 2 different strings, in any order:

find /my_home -name '*log.20140226*' -exec zegrep -H "vid=23.*mid=2|mid=2.*vid=23" {} \; > results

Notes:

The -H option causes grep to print the name of the matching file.

I use zgrep to handle compressed files, and then zegrep to handle the regular expression of "pattern|pattern" wherein I specify the search strings in both possible orders on the line, so I am effectively searching for EITHER of two patterns, namely "vid followed by mid" OR "mid followed by vid".

Upvotes: 4

anubhava
anubhava

Reputation: 785128

You can use zgrep

cd /my_home
zgrep 'vid=123' *log.20140226*

Upvotes: 2

Ramchandra Apte
Ramchandra Apte

Reputation: 4079

You need to use:

zcat `find /my_home -name '*log.20140226*'`|grep 'vid=123'

Without the backticks find /my_home ... is being sent as arguments to zcat, when you want the output of the find to be sent as arguments to zcat.

Upvotes: 1

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