Exclude Packages from being Installed and Upgraded in Debian/Ubuntu

Package - http://www.sxc.hu/photo/918252

Package managers make life on Linux a whole lot easier. Instead of managing bits of software by yourself and sorting out the inevitable dependency hell, where one package depends upon another and that depends upon yet another and so on, you can have a clever bit of software do all the work.

Debian, Ubuntu and other derivatives use the .deb package format and Aptitude (Apt for short) as the package ...

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Nohup - Run a Command Even Once your Shell is Closed

Remote server - source http://www.sxc.hu/photo/869240

Oftentimes you'll be in a situation where you want to run a command on a remote machine that will take a long time to complete, but you want to be able to issue the command and then log off and have that command run in the background.

There are many ways you could achieve this, perhaps by using cron or at to schedule the command to run right away ...

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Using SSH as an Ad-Hoc VPN

Laptop - source http://www.sxc.hu/photo/888008

Many of us have been in this scenario - you're on the move, using a random WiFi connection that you can get. You want to browse around to all your favourite sites, including ones where you log in over normal HTTP, but you're not entirely convinced of the security of the connection, so you don't.

If you have access to pretty much any server running SSH where you ...

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