How to rename multiple files in bash and remove a given prefix or suffix

You may want to rename multiple files in Bash to remove a given prefix or suffix, here is how to do.

Remove a prefix in bash

To rename all your files like myPrefix - myfile.mp3 to myfile.mp3.

for name in "myPrefix -"*;
do
    newname="$(echo "$name" | cut -d' ' -f3-)"
    mv "$name"  "$newname"
done

Remove a suffix in bash without removing the extension

To rename all your files like myfile_256kbps.mp3 to myfile.mp3.

for name in *_256kbps.mp3;
do
    newname="$(echo "$name" | rev | cut -d'_' -f2- | rev)".mp3
    mv "$name"  "$newname"
done

Change the extension in bash

To convert all your files like my_book.epub to my_book.mobi.

for f in ./*.epub; do
  ebook-convert "$f" "${f%.epub}.mobi"
done