Buscar texto en ficheiros dun cartafol

`grep -Rnw '/path/to/somewhere/' -e 'pattern'`

-r or -R is recursive ; use -R to search entirely

-n is line number, and

-w stands for match the whole word.

-l (lower-case L) can be added to just give the file name of matching files.

-e is the pattern used during the search

Along with these, --exclude, --include, --exclude-dir flags could be used for efficient searching

Referencia