This is a good book for sysadmins. They give you hacks to make you server secure by disabling accounts quickly and etc. This websites give you a full table of contents: http://oreilly.com/catalog/9780596004613.
Inspired by Linux The "Inspired by Linux Arrow" T-shirt design was chosen by the community as the first place winner in the 2012 Linux.com T-shirt design contest.
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