# grep

Search for regular expressions in files.

## examples

Search for string "hi" in readme.txt:

    grep "hi" readme.txt

Search for case insensitive string "hi":

    grep -i "hi" readme.txt

Search for word "hi" in all txt files in dir (i.e., don't return "think"):

    grep -w hi dir/*.txt

Search recursively:

    grep -r hi dir/

Show non-matches:

    grep -v hi *.txt

## more examples
http://www.thegeekstuff.com/2009/03/15-practical-unix-grep-command-examples/