[SOLVED] How to find files that contain one string, but don't contain another.

PatrickDickey · 09-11-2011, 05:35 AM

Here's my problem. I'm trying to create a v4l driver for my TV Tuner. Some of the files contain a line that starts with "kfree". If the file doesn't have an #include <linux/slab.h> line, then it won't compile properly.

I tried using

Code:

grep -lr "kfree" v4l-*/*

and it gave me well over 400 files (some that also have the #include line). So, essentially what I'm looking for is:

Find all files which contain "kfree" but don't contain "linux/slab.h" in the v4l-*directory (and it's subdirectories). And only list their path and filenames.

I should note that the v4l-* directory is actually v4l-dvb-80e-30c6512030ac which is why I'm shortening it up.

Any answers are greatly appreciated. I'm running Ubuntu 11.04 with Unity (so I can potentially use either command-line or graphical find programs).

Have a great week

Patrick.

grail · 09-11-2011, 05:53 AM

So something like:

Code:

grep -vl 'linux/slab.h' $(grep -lr "kfree" v4l-*/*)

PatrickDickey · 09-11-2011, 06:00 AM

Quote:

Originally Posted by grail

So something like:

Code:

grep -vl 'linux/slab.h' $(grep -lr "kfree" v4l-*/*)

So, if I want to redirect the results to a text file named kfree2.txt, then it would be

Code:

 grep -vl 'linux/slab.h' $(grep -lr "kfree" v4l-*/*) >> kfree2.txt

correct?

Thanks for the quick answer. I'm still at 300+ files, so hopefully this will knock things down a bit.

I had to tweak the command a bit. The -vl wasn't working (it gave me the same files that I already had), so I put in this

Code:

grep -L 'linux/slab.h' $(grep -lr "kfree" v4l-*/*) >> kfree2.txt

and it knocked it down to 190 files. So, hopefully that is the right number. Thanks for the help though, since I wouldn't have even gotten close without you.

Have a great day

Patrick.