Archive for the ‘tutorials & howto’s’ Category
I’m sure that many of you noticed that Google has a new favicon. On their blog, you can find an anouncement aboutthis change. At the end of the article, the VP of the Search Products and User Experience department writes:
“We hope you like the new favicon, which nicely integrates all of our original criteria: distinctive in shape, noticeable, colorful, timeless, and scalable to other sizes.”
Well, I’m not an expert in design, but … it’s just me, or this new design is far away from Google’s “original criteria” as it is perceived by us, the users. Is’nt Google about simplicity, and eficienty? Think about their website. Can you describe it as being “colorful”? Is this somehow complex and color-packed favicon a fit symbol for Google? What do you think?
Need a quick reference card? Here you have a list you can choose from:
This is a linux command line reference for common operations (HTML format).
Linux Reference Card published on FOSSwire website by Jacob. (PDF format)
A summary of useful Linux command by Squadron. (PDF format)
The intent of this Quick Reference Guide is to provide a starting point for improving the security of your system, to serve as a pointer to more in-depth security information, and to increase security awareness and methods that can be used to improve security. (PDF format)
This cheat sheet summarizes all they default keyboard mappings, with screen’s commands to execute the mapping and a description of each mapping. (PDF format)
There comes a time when one needs an end-all reference to the system. The time is now, and if you’re an Ubuntu user you’ll like this cheat sheet. (PDF format)
Probably the best Vim Cheat Sheet: “This is a single page describing the full vi/vim input model, the function of all keys, and all major features. You can see it as a compressed vi/vim manual. ” (GIF format)
Read more >> (Update: the link is down. I’m sorry)
Here are some useful commands that you can use to find (almost) every information that you want to know about your system from the command line. Most of this commands can be run as non-privileged user, but more information can be obtained if (and should be) run as root.:
General system information:
# uname -a
(Shift-M to order the list by memory use)
# free -m
# dmidecode | less Read more >>(UPDATE: The link is broken. Sorry)
I will show you how to make a fast backup of your windows partition from the command line. Of course, that is if you have enough space on your linux partition. Open a console and type the following command:
$ tar -cvzf win_backup.tar.gz /mnt/win
Where win_backup.tar.gz is the name of the archive and /mnt/win/ is the path to the windows partition (what to backup).
If there is a folder you don’t want to backup, use the exclude option. E.g.:
$ tar -cvzf win_backup.tar.gz --exclude= "/mnt/win/Downloads/*" /mnt/win
To restore do:
$ tar -xvzf win_backup.tar.gz
x -extract the contents of the TAR file
c -create a TAR file
z- uncompress it before extracting, used on file ending in .tar.gz or .tgz
v -verbose – display contents as it is tarring or extracting
f -filename to follow
I’m sure that many of you are used with the <Win>+<L> key combination in
windows, to lock the screen. In Ubuntu (the distro I use), the
corespondent shortcut is <CTRL>+<ALT>+<L>. But, in many other distros
there is no shortcut for this command. Here is what you can do to assign a shortcut for locking the screen. (In order to do that, you have to activate the Win key. Read “How to use the Win key in Linux” to find out how to do it.)
Open the gconf-editor by typing “gconf-editor” in the terminal.
Go to: apps>metacity>keybinding_commands
Many new linux users are very confused on how to actually install programs in Linux Distribution. It is true that installing new software in MS Windows is very easy. But in Linux is not only easy but very convenient. Why? In this post you will find the answer.
Let’s say that we need a photo managing software. In Windows we would search on internet after a suitable software and after finding one, we would download the package and install it. Now we will do the same thing in Linux. Let’s say that our linux distro is Ubuntu.
1.Will go to Applications -> Add/Remove and click on it:
3.Under the search box we have the applications which match our filter criteria. There is also a short description of each one of it.
4.Let’s say we would like to try F-Spot Photo Manager. Will check the corresponding box.Click on the “Apply Changes” button.
This is not the only way to install a program in linux. Depending on the linux distribution you have, you could use another package manager (like yum, synaptic, etc.). Or you could use the faster method: the command line. If you know the name of the application you want to install, simply write:
nongeek@mma:~$ sudo apt-get install application_name
or (in fedora):
nongeek@mma:~# yum install application_name
That’s all. Easy, isn’t it?
Let’s list the benefits:
1.We didn’t search all over the internet. We have the most stable applications gathered in one place (called repository).
2.We installed the application with only one click (and a password).
3.We are not afraid of any malware.
I also recommend for reading what is (in my opinion) the best guide about installing applications in linux on the net: How to install ANYTHING in Ubuntu!
If in Windows you were used with the Win key combinations, perhaps you would like to use it in Linux too. Here is a short tutorial about how to activate the Win keys in Linux.
First we will set the Windows key behaviour.
Go to System>Preferences>Keyboard.
Go to the Layouts tab and press the Layout Options button.
Open the Alt/Win key option.
Select the “Super is mapped to the Win-keys” behaviour.
Close the windows.
Now, that we have set the key behaviour, let’s make some Windows like shortcuts.
Go to System>Preferences>Keyboard Shortcuts.
Go to Window Management section.
Search for “Hide all windows and focus desktop”. Click on it.
Now will change the default shortcut with the one we want. Press the <WIN><D> combination.
Close the window and test your new shortcut. It works?
Now you can use the Win-keys the same way as in Windows or create the combinations you like.
For a tutorial about locking the screen with <Win>L in other distros then Ubuntu read the “How to lock the screen in GNOME” article.
For a list of most used GNOME and Nautilus shortcuts read “Top 15 shortcut keys in gnome and nautilus“