Configure the Vim editor to set the number of tabs (length) of the TAB key

Open vim config file (e.g. sudo, or su into root mode)

1.sudo VIM/ETC/VIM/VIMRC

Add a row

2.set tabstop=4

Exit Save

3.:wq

Advanced

After adding the following code to the. VIMRC, restart Vim to create 4 spaces by pressing TAB:
Set ts=4 (Note: TS is the abbreviation for TabStop, set tab width 4 spaces)
Set Expandtab

For a saved file, you can use the following method to replace the Space and tab:
tab is replaced with a space:
: Set ts=4
: Set Expandtab
:%retab!

Space is replaced with tab:
: Set ts=4
: Set Noexpandtab
:%retab!

Add! is the tab that is used to process non-whitespace characters, that is, all tabs, if not added, only the tab at the beginning of the line is processed.

Configure the Vim editor to set the number of tabs (length) of the TAB key