How to search all sub-directories for a file or command line in a file in Ubuntu?
 

Hello--

I'm trying to locate a file or a command line in a file on my hard drive. I am running Ubuntu 12.05.4 linux. Is there a grep command that will search the whole tree from root down to all the sub-directories?

Thank You.

grep searches the contents of files, it doesn't search for files.

Pros: Fast:
Cons: Relies upon a database which is updated daily.

Pros: Doesn't rely upon a database
Cons: The more files you have the slower it probably is.
Assuming you have some idea where the file is replace / with something else

If you want to search for a specific line inside a file, you can use grep
It would be best if you could narrow down where the file would be though, otherwise this is going to take a VERY long time.

Thank you!!