a numbered renamer.
├── abcde.txt
├── goodbye.txt
└── hello.txt
Assuming your current working directory looks like above and if you run ./nrename.py *.txt, your directory will look like below:
├── 0.txt
├── 1.txt
└── 2.txt
And you can specify prefixes and suffixes for new names by passing some arguments.
Numbered Rename is released under MIT License.