You don’t want your administrator to find out which sites you have been visiting lately. Use SSH for a secure connection. Create a local proxy to run on port 8000: ssh -C -D 8000 -p 443 user@address.com aft which you can configure your web browser to make connections with the loopback interface through the TCP… Read More »
If you really want to zap a file in Linux and be sure that it can’t be ever recovered, use the shred command. shred -u -z -v filename will not only delete the file but also overwrite the sectors it resided in 25 times, making recovery impossible.
You can protect your most important files from accidental deletion by giving them a “sticky bit” attribute: chmod +t filename
An even better and cleaner method than the reset button is to use Ctrl+Alt+Del. When even that doesn’t work and the system has frozen, there’s always hope. Hold down Alt+SysRq and press the following keys in order: R,E,I,S,U,B. Partitions will be unmounted cleanly, processes will be closed forcefully and the system should reboot soon afterwards.