Empty that Full Swap Memory #Ubuntu

Well, I just did not like the 100% swap memory usage being shown after my process was done done done!
So I swap-offed and onned (there are no such words, but why not!).

You see that green line going from 100% to 0%. Yeah, that!

sudo swapoff -a
sudo swapon -a

Edit the Grub boot loader Menu.lst in Ubuntu

Everytime I upgrade the Ubuntu package, I come across the choice of keeping the boot loader. I try to keep the menu.lst updated by accepting the changes.
This has a consequence: The default value on the menu.lst makes computer boot into another version of Ubuntu.
For example if I had XP/Vista OS as Third Option (selection 2) then after changes it would just start whatever is on the third option.
It could be Ubuntu 9.10, kernel 2.6.x.x.-generic

So, I need some way to edit the menu.lst or the boot loader or the grub menu editor.

How do I do it?

start the terminal
type:

gksudo gedit /boot/grub/menu.lst

or

sudo vi /boot/grub/menu.lst

remove the un-necessary items on the list.
save it and restart.

Kill Firefox in Ubuntu

I have been using Ubuntu in Dell Inspiron 6400. Actually, I had installed last year. But unable to use it nicely, because of two reasons. I had no wireless internet available in Ubuntu: in-compatible hardwares and the other was that I had no success in installing Matlab in it.
Now after installing the Matlab successfully and having updated it to Ubuntu 8.x, I can see its inherent beauty.
Actually, this is my second day in Linux environment without the glimpse of the Vista.

I am glad with this...
So, I thought, I should post some of my experiences.


My Ubuntu Experiences: Part x


Today: I got into trouble with the message:

Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system.

Hmm?

In the case of Vista,( or MS OS) I could go to task manager and kill it. So how can I kill it?

Googled it and found the solution:
http://brainstorm.ubuntu.com/idea/8958/
Stated:

open a terminal and type "killall firefox" and then proceed with "killall children"

I did it, wow! It works.

Run Matlab with full path...

After bit of wrestling, I could finally figure out how to run matlab.

Phew!!!
My problem was that I had skipped the installation of the symbolic link
so, need to run:

/home/bloggerDai/matlab/bin/matlab

:(

long command.

I need to learn how to install the symbolic link, as I can see it is straight forward with su privileges.

Going back to ubuntu to wrestle for that ...