The idea behind Computer Janitor is that it will help you clean up those files that you no longer need, thus saving space on your computer. Now, before you begin…note that this program has the potential of doing damage if used incorrectly so be sure your critical data is backed up.
Here is a list of .deb packages that were used to install applications. These .deb packages are no longer needed so Computer Janitor is saying they can be removed. Click the “Cleanup” button and they are removed. If you have doubts about what it wants to remove simply uncheck the box for that item.
When you click the remove you see this warning.
This is a frustrating warning. You as a user are trusting the Computer Janitor to find those files which can be cleaned up and the warning says “It will be your fault if Computer Janitor toasts your system.” I think the developers put this in because it did toast so many systems in the previous Ubuntu release. If you check the number of rants about this program you will probably decide it is not worth taking the chance.
Avoid this program as you will end up being one of those angry at losing programs you are using. This application does not seem to be as mature as it should be in a release.
Initial Impressions of Yuuguu
I like the fact, a lot, that it runs on Linux. I hate trainiing on a Windows machine with a Linux virtual machine, it just doesn’t seem right. Yuuguu provides a training session with more integrity as it can all be done on Linux. It provides a greater experience for the Linux user as they have a complete picture of what is going on on the desktop.
The YuuGuu Website for download is Here
That said, there are some features that are lacking in Yuuguu. First, as an instructor, tools are very important for providing a professional impression. The only available tool is that the mouse turns to a red dot. This will then highlight an area if you wanted to focus on that. When you are teaching from the command line, being able to highlight a section with a transparent color, just like GoToMeeting, provides an excellent tool for users to focus on the discussion. It is easy to lose users when you cannot highlight properly. The other major factor, is that Yuuguu is slow, too slow. As an instructor, you will highlight, provide discussion, and then move on. However, in initial tests I found that the delay for the movement of the cursor could be as slow as 2 seconds when using the low quality imaging and as slow as 4+ seconds when the high quality image was chosen. That would mean as an instructor you would need to stop and let the cursor catch up each time…hard to discipline yourself to do and strange sounding to students with all of the pauses.
Text chat works fine. The only problem I see is that all students see your chat window as well as their chat window. That really does not make sense because as an instructor it is nice to have a window that students cannot see, as well you lose desktop space. The other feature lacking here is that you have no private chat, everyone sees what the instructor receives, no privacy for students. That will certainly cause some students to refrain from any comments as they will know that there is no private interface.
There is a Free version but it is limited to 100 minutes a month and only 5 users. So it will work OK for most situation but you will need to purchase in order to do much training, $9 a month is all.
Once you install Yuuguu you can select “Web Share” to provide access to your screen. Your users do not need to download anything but most will have a better experience if they do download and install Yuuguu.
When you choose Contacts or Web Share you can send an email to those users who you want to invite.
Once they receive invitation with the meeting ID they can login to the session from a window on yuuguu.com.
I went back through all of the shortcuts that I could find and tried them on Ubuntu 9.04. Interesting that some of them did not work so I left those out. All of these shortcuts should work on a default Ubuntu installation.
Basic Keyboard Shortcuts
When you consider using keyboard shortcuts always think about the Ctrl key as that is the first key you will use with all of the keyboard basics.
Ctrl + C = Copy the highlighted content to clipboard
Ctrl + V = Paste the clipboard content
Ctrl + N = New Create a new document (works with gedit, OpenOffice, not terminal)
Ctrl + O = Open a document
Ctrl + S = Save the current document
Ctrl + P = Print the current document by selecting a printer
Ctrl + W = Close the close document
Ctrl + Q = Quit the current application
Keyboard Shortcuts for GNOME Desktop
Ctrl + Alt + F1 = Switch to the first virtual terminal
Ctrl + Alt + F2(F3)(F4)(F5)(F6) = Select the different virtual terminals
Ctrl + Alt + F7 = Restore back to the current terminal session with X
Virtual terminals or ttys allow you to login as different users or multiple times. The virtual teminals F1-F6 are command line only, F7 is the XWindow.
Ctrl + Alt + Backspace = Restart GNOME
Alt + Tab = Switch between open programs
Ctrl + Alt + L = Lock the screen, this will require user password to open
Alt + F1 = opens the Applications menu
Alt + F2 = opens the Run Application dialog box
Alt + F4 = closes the current window which is highlighted
Alt + F5 = unmaximizes the current window
Alt + F7 = grab and move the current window
Alt + F8 = resizes the current window with mouse
Alt + F9 = minimizes the current window by placing on the panel
Alt + F10 = maximizes the current window
Alt + Space = opens the window menu on the currently highlighted application
Ctrl + Alt + Left/Right = move to the next/previous workspace
Keyboard Shortcuts for Terminal
Do not mistake these shortcuts with shortcuts for vi or any other editor that you may have open.
Ctrl + C = kills the current process.
Ctrl + Z = sends the current process to the background.
Ctrl + D = logs you out.
Ctrl + R = finds the last command matching the entered letters.
Enter letters which will be followed by Tab + Tab = lists the available commands beginning with those letters.
Keyboard Shortcuts for Nautilus
Shift + Ctrl + N = Create New Folder
Ctrl + T = Will add a tab to the window
Alt + ENTER = Show File/Folder Properties
Ctrl + 1 = Toggle View As Icons
Ctrl + 2 = Toggle View As List
Ctrl + S = Select Pattern by opening pattern window
F2 = Rename File
Ctrl + A = Select all files and folders
Ctrl + W = Close Window
Ctrl + Shift + W = Close All Nautilus Windows
Ctrl + R = Reload Nautilus Window
Alt + Up = Open parent directory
Alt + Left = Back
Alt + Right = Forward
Alt + Home = go to Home folder
Ctrl + L = go to location bar
F9 = Show sidepane
Ctrl + H = Show Hidden Files
Ctrl + + = Zoom In
Ctrl + – = Zoom Out
Ctrl + 0 = Normal Size
Are you looking for Ubuntu commands? Check out our Command Manual PDF.
So you are enjoying the new Ubuntu 9.04 but maybe you notice some issues. Like at times your desktop seems slow…why? Or maybe your are just curious to know what is happening under the hood. Ubuntu provides an easy to use interface to take a look at resources and what is happening.
Select System/Administration/System Monitoring.
The “System” tab gives you a summary of your operating system, your hardware and the status of the system. Here you can see that Jackalope is installed. Note it also provides you with the exact kernel that you are using. As you update the kernel this will change. The hardware shows the total amount of RAM on your system. Keep this number handy as you will need it to evaluate what you are using later. Here it looks like there are two processors, when actually there is only one but it is using hyperthreading so it functions as two. The status is basically showing available disk space.
Processes are the applications running on the machine. Now you may see a lot of “sleeping” processes and want to say, “hey you guys wake up and do something!”. Well, that is exactly it, they are waiting to be called upon to do something. Basically these processes are ready to go, they just are not needed right now, this is how your system can save on resources. If you are looking for what is slowing your computer down check the “%CPU” as this will list the processess usage. If you see a process hogging the CPU it may be because it has a problem, so you need to look into it. You also see a column with memory listings. This is another area to check for processes that are using a lot of memory. Write them down so that if you see a pattern you can dig into it later.
The “Resources” tab provides a real time view of how your computer is using available resources. The CPU History shows what percentage is active for each processor. The Memory and Swap History shows the amount of RAM that is used. If you are consistently using a lot of RAM you may want to purchase new RAM for your machine as that will certainly slow down your computer. SWAP is hard drive space that will be used if the RAM runs low. SWAP can be 10 to 100 times slower if it is used so be careful. The Network History will show traffic on your network connections.
Drive space is viewed in the last tab. It will show the amount that has been used.
If you’ve been on the hunt for a netbook Linux distribution that is dependable, has very few bugs, and some great applications then look no further. Easy Peasy is an Ubuntu-based netbook friendly Linux distro, formerly known as Ubuntu Eee that is focused on being efficient while still offering a good-looking interface and incredible internet lineup. Users can enjoy applications like Firefox, OpenOffice, Pidgin, Skype, Songbird, Cheese, Picasa and much more. Easy Peasy 1.1 is out and making a good impression with Linux users as it features a completely new icon set, login, wallpaper, and splash screens. The newest version also boasts extended hardware support increasing the odds your hardware will work out-of-the-box, after all it’s suppose to be easy peasy right?