I had a need recently to convert a .bin/.cue CD Image pair to .iso for mounting on OSX. I was considering writing a quick utility to handle the task, but in the process of researching the file formats, I found BinChunker, a GPL-licensed piece of code that does exactly what I need, simply and directly. The official site has the source code and RedHat RPM’s, but if you are on OSX, I did a quick compile of the latest version which you can download here.

Once you download the utility, issue this command from a shell prompt in the directory where you downloaded the file:

sudo cp bchunk /usr/bin/

This will copy the file into a location where the system can find it at will (a.k.a. the path). Then, to convert a .bin/.cue pair to a .iso, you can issue this command:

bchunk myinputfile.bin myinputfile.cue myoutputfile

Short, sweet, and simple — and lightweight too, weighing in at only 20k.

UPDATE: As commenter Frederik has pointed out, this can give a permission denied error if your user account does not have execute permissions on the file. Execute this command after copying the file to /usr/bin/ to solve this problem:

sudo chmod a+x /usr/bin/bchunk

If you are getting a not found error, make sure that /usr/bin/ is in your path. To check this, type echo $PATH and look for /usr/bin/ in the result. If it isn’t there, type sudo nano /etc/profile and add /usr/bin; to the PATH=... line. Then press CTRL+x followed by Y to confirm and the enter key to verify the filename to save and exit nano. Then execute source /etc/profile to refresh the path.”