Nrename

Command-line utility for renaming numbered files.

Installation

gem install nrename

Compatibility

This gem does not have any external runtime dependencies, nor does it use any fancy language features/syntax, so it works on pretty much every Ruby implementation out there.

Description

When you have a set of files like:

1.txt
2.txt
10.txt
11.txt
99.txt
100.txt

it's hard to get a list of them in order (from 1.txt to 100.txt). Shell of file manager will usually sort them starting from first symbol in filename, like this:

1.txt
10.txt
100.txt
11.txt
2.txt
99.txt

Nrename lets you rename such files so that they have equal number of digits in names:

001.txt
002.txt
010.txt
011.txt
099.txt
100.txt

Usage

$ nrename --help
Usage: nrename [OPTINS] DIR...

Options:
    -X, --execute                    Do actual work
    -R, --recursive                  Process given directories recursively
    -N, --numbers-only               Leave only numbers in file name
    -D, --rename-dirs                Rename only directories instead of regular files
        --renumber                   Renumber files from starting from 1 and on
        --regexp REGEXP              Use REGEXP to match filenames
    -v, --[no-]verbose               Run verbosely
    -h, --help                       Display this message
        --version                    Display version