''grep'' searches files for text.

=== Basic Syntax ===
<code>
grep [options] <text> <file pattern>
</code>



=== Flags ===

^ Flag  ^ Description ^
| ''-r'' | Recursively searches files specified in the directory as the ''<file pattern>'' argument |
| ''-R'' | Like ''-r'' but follows symbolic links |
| ''-i'' | Ignore case |
| ''-n'', ''--line-number'' | Display line numbers |  


=== Examples ===

Recursive, case-insensitive search of the current directy for the word "todo", displaying line numbers:
<code>
grep -rin todo .
</code>