how to grep?

[ritika_sharma]

I want to search files (basically .cc files) in /xx folder and subfolders.
Those files (*.cc files) must contain #include "header.h" AND x() function.

Clearly,
I wanna list of *.cc files that have 'header.h' & 'x()'. They must have two strings.

I tried several ways, and got only files with header.h OR x().
Some examples given in Internet doesn't give any result in my system.
I am using Fedora 8.0 in my PC and I have grep 2.5.1 version.

[markcole]

I want to search files (basically .cc files) in /xx folder and subfolders.
Those files (*.cc files) must contain #include "header.h" AND x() function.

Clearly,
I wanna list of *.cc files that have 'header.h' & 'x()'. They must have two strings.

I tried several ways, and got only files with header.h OR x().
Some examples given in Internet doesn't give any result in my system.
I am using Fedora 8.0 in my PC and I have grep 2.5.1 version.

You can use xargs along with piping into another grep

grep -Rl "header.h" *.cc | xargs  grep "x()"

[Manko10]

To make it even saver, use the -Z parameter for grep and the -0 parameter for xargs. That will separate the different file names with NULL bytes instead of newlines.

[MakiMaki]

grep [hH]ello
is the same as
grep "[hH]hello"

and this always confused me...

[Manko10]

That's clear, since it's a character class.
But what does this have to do with the topic?

[Piyu_86]

grep -iR "x()" `grep -iR "header.h" *.cc | cut -f1 -d:` | cut -f1 -d:

output will be the file containing both "header.h" and "x()"