Using Linux again. Now got fresh Ubuntu 9.04 installed and all my old Ubuntu configurations were lost. It takes time to resume to an acceptable status.

Here is a note for bash prompt customize:

1. Open ~/.bashrc
2. un-comment force_color_prompt=yes
3. change PS1 assignment before else clause
4. Save. Then open a new terminal to check the effect.

This is my PS1 value:

PS1='${debian_chroot:+($debian_chroot)}\[\e[31;01m\]~L~\[\e[00m\]\[\e[30;02m\]:\[\e[00m\]\[\e[36;02m\]\w\[\e[00m\]\[\e[37;02m\]\$\[\e[00m\] '

And it looks like this:

~L~: /usr/local$

Information about these pattern, color and veriables can be found here:

http://wiki.archlinux.org/index.php/Color_Bash_Prompt