Use of Centos7 Vim/vi

CentOS 7 has its own VI,

There are three modes of VI:

Commande mode

Insert mode

Last line mode

Enter VI vi+ file name (corresponding directory)----go to the VI Full screen editing screen

After entering VI, is under command mode, you need to switch to insert mode below---Press the letter I, so as to be able to enter text

Under Insert mode, you can always enter text, if you find that the input is wrong, then cut back to command mode (ESC return), delete the wrong

Exit VI, save the file in command mode by pressing: then enter WQ

Use of Centos7 Vim/vi