foo@bar:~$ cd Desktop
To test that the ISO image works, you are going to mount it and access the files in a particular folder. First, create this folder:
foo@bar:~$ mkdir test_iso
Now mount it on that folder:
foo@bar:~$ sudo mount -o loop -t iso9660 my_iso_file.iso test_iso
That's it! Now you can browse the folder test_iso.
Verifying the ISOTo verify the iso, fire up a terminal, and run the following command:
foo@bar:~$ md5sum my_iso_file.iso
Wait a little while and Ubuntu will print a "word" that is 33 characters long. Now go to the site from which you downloaded the file, and compare this word with the md5sum given by the owner of the iso file, usually a file named MD5SUMS. The words should match.