In recent Debian systems, the wireless configuration is delegated to a network-manager application by default, and the network-manager is a part of your desktop environment. It seems very comfortable for newbies, but an awful solution for an administrators who often use the console. I show you how you can manage your wifi networks using /etc/network/interfaces file.
We have two or more arrays, and we would like to create hashes from these. For example: one of the arrays contains the names of our users, the another one contains the birth years, and the third contains the room numbers. We would like to create a hash for every user.
If you need to store non-english text in String variables, you will notice that it is difficult to change the case of unicode strings.
First try. Checking the utf8 support with hungarian accents in "árvíztűrő tükörfúrógép" and in uppercase: "ÁRVÍZTŰRŐ TÜKÖRFÚRÓGÉP." How to operate the MathJax plugin. I will test processing.js later.
What to do if you need to reboot a server remotely, and this server uses an encrypted root partition? By default, the boot process will stop, and wait for you to type the password on the console. I'll show you, how can you enter this password remotely over an ssh connection.