Computer Science

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http://paulgraham.com/head.html

Holding a Program in One's Head

August 2007 A good programmer working intensively on his own code can hold it in his mind the way a mathematician holds a problem he's working on.

25 Best SSH Commands / Tricks

http://blog.urfix.com/25-ssh-commands-tricks/ OpenSSH is a FREE version of the SSH connectivity tools that technical users of the Internet rely on.