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A couple of years ago when everyone still had giant CRT monitors, resolutions of 1600x1200 were pretty common. Nowadays however 19" TFT monitors often cannot scale higher than 1280x1024. So how can we still fit more on one screen? DPI can help!

With SSH you can securely login to any Linux server and execute commands remotely. You can even use SSH to transfer and [synchronize files from one server to another](/blog/2007/08/16/synchronize-files-with-rsync/). Automating these tasks can make your life easier, but normally SSH prevents that because it requires you to login every time. Well, not anymore, in this article I will show you how to connect to SSH without a password.

Synchronizing files from one server to another is quite awesome. You can use it for backups, for keeping web servers in sync, and much more. It's fast and it doesn't take up as much bandwidth as normal copying would. And the best thing is, it can be done with only 1 command. Welcome to the wonderful world of rsync.

Deleting a file or reformatting a disk does not destroy your sensitive data. The data can easily be undeleted. That's a good thing if you accidentally throw something away, but what if you're trying to destroy financial data, bank account passwords, or classified company information. What if you want to clean your computer before selling it for instance?

It's always a good idea to backup important data. Your files and settings can easily be archived. But how can you backup & restore all applications that you've installed over the last couple of years? Here's an easy trick that works for both desktops & servers, and that can also be used to synchronize installed packages in a web cluster, making all the servers run the same software.