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Browse - programming tips - bash change extension of a file

Date: 2009jul8
Language: bash

Q.  How can I change the extension (suffix) of a file in a bash script?

A.  Use the ${} construct in bash.  For example, to change the
extension of variable $I from .flac to .mp3 and save in variable $MP3 do this:

	MP3=${I/\.flac/.mp3}

Here is a script that converts a folder of .flac files to .mp3:

	#!/bin/sh
	for I in *.flac; do
		MP3=${I/\.flac/.mp3}
		ffmpeg -i "$I" "$MP3"
	done

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