mass_rename

Filter and mass rename files in a directory or subdirectories with regular expressions.

Add this line to your application's Gemfile:

gem 'mass_rename'

And then execute:

$ bundle

Or install it yourself as:

$ gem install mass_rename

Usage: mass_rename [options]
    -d, --dir NAME                   Select a different working directory
    -f, --filter PATTERN             Filter files using a regular expression
    -r, --replace PATTERN            Replace matched file names with a replacement string
        --recursive                  Select files in the target directory and all its subdirectories
    -v, --version                    Display version
    -h, --help                       Print this help

This tool is essentially a multi-string gsub, so treat the filter and replacement patterns the same as you would when using gsub -- capture groups and back references are very helpful!

The following example will recursively rename files matching the pattern "some_file_pattern_(\d)", capture the digit character, and rename all matching files with the replacement "\1_new_name", using a back reference for the captured digit.

mass_rename --recursive -d target_dir -f "some_file_pattern_(\d)" -r "\1_new_name"

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install.

Bug reports and pull requests are welcome on GitHub at https://github.com/0xSiO/mass_rename.

The gem is available as open source under the terms of the MIT License.