System

Back In Time is a simple backup system for Linux inspired by "flyback project" and "TimeVault". The backup is done by taking snapshots of a specified set of directories.
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VNC is a remote desktop protocol, and RealVNC is a viewer and server for operating machines remotely. More info in the magazine tutorial on page 96.
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Safe-rm is a safety tool intended to prevent the accidental deletion of important files by replacing /bin/rm with a wrapper, which checks the given arguments against a configurable blacklist of files and directories that should never be removed. Users who attempt to delete one of these protected files or directories will not be able to do so and will be shown a warning message instead.
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TightVNC is a free remote control software package. With TightVNC, you can see the desktop of a remote machine and control it with your local mouse and keyboard, just like you would do it sitting in the front of that computer. More info in the magazine tutorial on page 96.
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Trickle is a portable lightweight userspace bandwidth shaper. It can run in collaborative mode (together with trickled) or in stand alone mode. Trickle works by taking advantage of the unix loader preloading. Essentially it provides, to the application, a new version of the functionality that is required to send and receive data through sockets. It then limits traffic based on delaying the sending and receiving of data over a socket. trickle runs entirely in userspace and does not require root privileges. See the hardcore Linux tutorial in the magazine on page 98 for more info.
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