The landlord just started to play Ubuntu when want to try its VI editor, the result every time you want to press the use of the key press up and down around, will always become ABCD, and then the key HJKL will become up and down around, simply let people extremely crazy ah! So there is a time for the landlord of the Ubuntu operating system is quite dissatisfied, but emperor not negative, finally let the landlord found a solution on the Internet, as follows:
In fact, this problem is caused by the VI version of the Ubuntu system is too old, so the solution is to install a new version of the VI editor can:
First uninstall the previous version of the VI editor:
$sudo Apt-get Remove Vim-common
Then install the new VI:
$sudo Apt-get Install Vim
Ubuntu comes with several versions of VI, you can choose the version you like according to your needs
Ubuntu System VI editor up and down keys to the ABCD solution