[vox-tech] trouble running recursive grep

[ME]

On Sun, 10 Mar 2002, eric nelson wrote:
> Why doesn't this work:
> 
> (as root)
> cd /usr/src/linux/include
> grep -r pci_dev *.h
> 
> 
> I get the error
> grep: *.h No such file or directory

Look in that directory, and you will likely see no .h files in that
diretory. This is where the error is reported. No match to *.h in that
dir and no dir to search recursively has a .h extention. :-)

Instead try:
# grep pci_dev */*/*.h
or
# grep pci_dev */*.h
And see if you get no error.

Then try 
# grep pci_dev *.h
and you should see the error again

An alternate?
find . -name \*.h -print0 | xargs -0 grep "pci_dev"

> In general, what is the best way to search system include files for specific 
> strings?

"best" is a subjective term. I bet everyone here has their own best, and
some probably have other ways to do the above.

-ME

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