Mounting a CD-ROM ISO file
One can mount a CDROM ISO file so that it can acces the contents of the iso image without having to burn a CD. This is useful for installing applications that are available as ISO files when you already have a Linux running.
To do that use the following command:
mount -o loop,ro iso-filename.iso /mnt/cdrom
Note that without the ro option, you can even modify the ISO's content - but mounting may be rejected if you do not have write permissions to the file.