List all the files which do not contain a particular string

Question

I would like to know which files do not include a particular header file in C.

For example:

#include "stdio.h" #include "my.h"

...

#include "stdio.h"

....

I would like to find out similar files (like file2.c) which do not contain #include "my.h".

Note that you should be writing #include <stdio.h> because that's what the C standard uses. — Jonathan Leffler
– Jonathan Leffler, Commented Sep 20, 2011 at 6:22

Vaughn Cato · Accepted Answer · 2011-09-20 06:16:36Z

3

On Unix systems:

grep -L '#include.*my\.h' *.c

answered Sep 20, 2011 at 5:54

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1 Comment

This lists files which contain at least one line which doesn't match the regex.

bash-o-logist · Accepted Answer · 2011-09-20 06:23:04Z

shopt -s nullglob for file in *.c do if grep -q "my.h" "$file" ;then continue else echo "found file that don't have my.h" fi done

Or you could use:

grep -L "my.h" *.c

if you have nothing else to process except to echo out file names. :)