Really advanced ssh tips (like ssh muxing) ..
http://blogs.perl.org/users/smylers/2011/08/ssh-productivity-tips.html
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https://mintel.mines-telecom.fr/voir.php?id=2978
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http://mutt.org/doc/manual/manual-4.html#ss4.2
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https://leanpub.com/the-tao-of-tmux/read
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http://evanjones.ca/software/ns2tools.html
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http://www.erreur404.org/html2/mp3.php3