I need to replace special characters with equivalent hexadecimal unicode under Linux or Unix like operating system. How do I list or find out unicodes for given characters?
I‘ve downloaded Backtrack Linux version 5 KDE desktop 64 bit. To start a graphical interface I’ typed startx command. But it failed with the following error message:

How do I fix this problem and install Backtrack Linux version 5 KDE desktop on my hard disk?
I know how to disable beep sound under Linux, but the settings are not working under FreeBSD laptop. How do I disable beep sound under FreeBSD operating system?
Q. How do I install KDE version 4.2 under Ubuntu Linux using binary method?