Set the highlight, line number, and indent of vim configurations in centos.

Set the highlight, line number, and indent of vim configurations in centos.
In centos, the vim configuration file is stored in the/etc/vim directory. The configuration file name is vimrc.
Enter the following command on the terminal to edit the vimrc configuration file:
Sudo vim/etc/vim/vimrc
Or sudo gedit/etc/vim/vimrc

1. display the row number
Add a new line at the end of the file and enter set nu

2. syntax highlighting
Find "syntax on" in the file and remove the double quotation marks. Double quotation marks indicate the meaning of the comment.

3. Automatic indent
Add a row at the end of the file and enter set autoindent.
After adding a row, enter set cindent
Autoindent indicates automatic indent, and cindent indicates automatic indent for C language syntax.