How to: Create an ISO with ubuntu

Have a CD that you can’t be bothered to constantly boot up? Or just to make a nice backup of a directory… then you can make an image of it. In Ubuntu this is rather easy at the commandline:
For folders all you have to do is:
mkisofs -r -o file.iso /location_of_folder/
and don’t forget to make a checksum:
md5sum file.iso > file.iso.md5
For CD’s this is a bit complicated and you can do:
sudo umount /dev/cdrom dd if=/dev/cdrom of=file.iso bs=1024
Of course you could use graphical tools like Braserio.

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