Grub Menu Timeout

1> sudo gedit /boot/grub/menu.list
2> set timeout (value in seconds)
rebot the system.

Macintosh on Ubuntu

We can get the feel and look of  Macintosh on Ubuntu.
Steps:
1> Download Macbuntu or mac4lin from sourceforge.
2> Install it from installation file ./install.sh (run it on terminal)
3> Also install dockey (if not provided in downloaded folder of macbuntu or mac4lin)
4> Customize it according to your need.

NOTE: Before installation make sure that you are using the appropriate version of ubuntu for which Macbuntu or mac4lin are compatible.

Password Reset in Ubuntu

1> During Grub loader press ESC
2> Go to Recovery Mode of Ubuntu
3> Select Drop to Root user
4> On terminal write passwd <username>
    It will ask for new password reset.

Repository dpkg Lock error

E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
This happens if installation is still going on and you are trying to install another package or may be you have killed the ongoing installation.

Therefore for this write on terminal as:
sudo rm /var/lib/dpkg/lock
Now you can use sudo apt normally.

distribution installation through bin

1>Just go to bin and write ./filename   like in ocrep
2> If it doesnot work write  :

chmod 755 <file name>.bin

Also u have to do sudo to do this.
like sudo ./filename

Compiz Fusion

For making eye candy 3D look to our desktop we use compiz fusion application.
More details can be found Here.

Wireless in Ubuntu 10.04

sudo apt-get install broadcom or for more info refer the following link.
here