genisoimage is a pre-mastering program for creating ISO-9660 CD-ROM filesystem images, which can then be written to CD or DVD media using the wodim program. genisoimage includes support for making bootable “El Torito” CDs, as well as CDs with support for the Macintosh HFS filesystem.
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vimdiff – Edit two or Three versions of a file with Vim and show differences
Vimdiff starts Vim on two (or three) files. Each file gets its own window. The differences between the files are highlighted. This is a nice way to inspect changes and to move changes from one version to another version of the same file.
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How to disable X or GUI on boot in Debian
This tutorial will explain how to disable X or GUI on boot in Debian
First get the root shell by entering the following at the boot prompt:
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How to sendemail from the command line using a Gmail account and others
SendEmail is a lightweight, completly command line based, SMTP email agent.It was designed to be used in bash scripts, Perl programs, and web sites, but it is also quite useful in many other contexts.SendEmail is written in Perl
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