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Partitions, in the way they are commonly used, are not flexible. The solution is called Logical Volumes, managed with LVM, the Logical Volume Manager, and used with the Device-Mapper.

Kevin van Zonneveld explains how to slow down brute force attacks on your ssh server so much it makes them useless.

After quite a long search for a good free tool for editing ISOs, which I had interrupted for some time since I really didn't find anything I liked, neither KISO nor Acetone could offer me what I really wanted, just opening an ISO and editing it, I finally found ISO Master.

Whether you consider it an advantage or a disadvantage standard configuration dialogs in GNOME tend to be a bit limited and because of that do not allow all kinds of behavior customizations that one may desire to do. It is done that way in order to maximize ease of use and user friendliness.

NetworkManager is a nice, easy to use utility. If you're a laptop user who wants to use any WLAN when available, without configuration, it's one of those things you don't want to live compute without.

You can find some more tips in an old tips thread.