Some of the character classes to use in regular expressions. alpha Any letter, [A-Za-z] upper Any uppercase letter, [A-Z] lower Any lowercase letter, [a-z] digit Any digit, [0-9] alnum Any alphanumeric character, [A-Za-z0-9] xdigit Any hexadecimal digit, [0-9A-Fa-f] space A tab, new line, vertical tab, form feed, …

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How to burn CD’s using only bash. First create an iso with the following command: mkisofs -o HomeMovie.iso -J -r -V HomeMovie Movie.avi Movie.srt In this example:

-o names the new .iso image file (HomeMovie.iso) \ -J uses Joliet naming records, for Windows compatibility \ -r uses Rock Ridge naming conventions for …

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