Batch rename file extensions in Mac OS X Terminal

find . -iname "*.old" -exec bash -c 'mv "$0" "${0%\.old}.new"' {} \;

Explanation #

It finds all .old files and renames (mv) them to {filename}.new. Easy peasy.

Published: February 26, 2013 ~

1 min.

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Ramon Eijkemans

Eikhart - Mad Scientist