The first step is to create a mount point for the iso file to be loaded in.
>sudo mkdir /mnt/iso
Next use the mount command to attach the iso file you want to load.
>sudo mount /pathtoiso/image.iso /mnt/iso -o loop
The -o loop command tells the command to mount a loop device to the iso specified, then mount it on the mounts point specified.
To view, the contents of the iso file use the ls command.
> ls /mnt/iso
When you are done and want to unmount the iso, run the following command.
>sudo umount /mnt/iso
If the iso is in use this command will force it to unmount.