Useful information when using ubuntu

1) export HISTSIZE=0

Everything you typed in the terminal is recorded. You can press the up arrow key to repeat the commands. This command clears all the past history. The capital letters are required

2) CD [ followed by pathname]

It is quite different from dos commands when you try to navigate from point to point. One easy way to copy the address that is displayed on the places address bar. Type a CD in terminal and followed by a space. Right click and paste the destination in like this, And you will jump direct to the folder

3) If you put your mouse over a music file, hold it there, ubuntu will play the song, a direct instant preview

4) If a particular software or program fails to run as it should after installing, Do a restart and try again. One thing about ubuntu is that it does not prompt for a restart.

5) When prompted for password in terminal. Just key in your password. The cursor will not move. It is still registering your entry.

6) Whenever you are installing something that requires a CD, you cannot eject the Disc and switch like windows.  You will need to unmount the device,  and mount it again.

sudo mount /media/cdrom0/ -o unhide

sudo umount /media/cdrom0/