Command line search replace on Mac OS X

The following command

sed -i '.original' 's/old_link/new_link/g' *

create 2 backup files like:

• File1.txt.original
• File2.cfg.original

You can use the following command to ignore backup file

sed -i '' 's/old_link/new_link/g' *

and with find :

find /paht/to/directory -exec sed -i '' 's/old_link/new_link/g' {} \;

Enjoy!