Hi folks

how can I add a file to an existing ISO image file? I made an image file from a CD with dd, but know I want to add a file to this Image.

Let's say your image file is called image.iso.
Now create a directory called isodir in your current directory. Mount image.iso in isodir like this (as root):The loop option means to mount a regular file not a device (you must have loopback device support for this to work), and rw means to mount it in read/write mode.

The contents of the ISO now appear under isodir, and you can edit, remove and add files as you please, provided there's enough space in image.iso's filesystem. Before you burn the CD, remember to unmount the directory with: from the same directory you mounted it in. (You won't be able to unmount it if you have any terminals, file browsers, etc. pointing at anywhere under the isodir directory).

Oh thanx, that's so easy? I knew how to mount an ISO image, but I thought you can only mount it as read only file system.

No; you can mount them read-write. The only major problem with this is that ISOs tend not to have much space for new files in them, and you can't grow them like this.

Alternatively, there are several GUI tools like K3B that will let you manipulate an ISO filesystem.

Oh, ok is their also a shell program for this or can you only manipulate an ISO filesystem with K3B?

There's a shell utility called growisofs that will resize an ISO filesystem so you can squeeze more free space into it.