How to add files to an iso file in linux

Instead of purchasing iso making software, one can easily add files to an iso in linux.  It involves using the “mkisofs” command.  To add your files to an iso simply do

mkisofs -o file.iso file

This command can also be used to add a directory to an iso.  To do this perform the command with the -R option and the directory:

mkisofs -R -o directory.iso directory

This ISO can then be burned to a CD, or mounted via virtual media.