find/grep returns no matches

Shell Programming and Scripting
1

Hi all!

I've faced with very unintelligible error using find/grep like this:

root@v29221:~# find /var/www/igor/data/www/lestnitsa.ru | grep u28507

I get nothing as a result, but:

root@v29221:~# grep u28507 /var/www/igor/data/www/lestnitsa.ru/_var.inc               
$db_name = 'u28507';
$link = mysql_connect ('u28507.mysql.masterhost.ru', '*', '*') or die ("Could not connect");

It drives me crazy, please help to figure this out.

2

Hi.

You've taken the filename as input to grep, so you are grepping on the filename, not on the file contents, as you imagined.

try using

find ... | xargs grep u28507

or better

find ... | xargs -I{} grep u28507 {}

$ cat file1
start
  u28507
end

$ find . -name file1 | grep u28507                   

$ find . -name file1 | xargs grep u28507 
  u28507

$ find . -name file1 | grep file1 
./file1
3

Thank you very much! What a stupid mistake... :slight_smile: