In the command mode in the VI editor, delete the character usage at the current cursor__ Command.

A:x;
B:d;w;
C:d;
D:d;d;

<x>. analysis ：vi The editor is Linux and Unix The most basic text editor on the web , In character mode . from & There's no need for a graphical interface , Make it an efficient text editor .
[x]: Every time you press , Delete the “ Back ” A character