Vi or Vim is one of the most popular text editors among Linux users. The program offers a bunch of great features for a wide range of audiences, from developers to regular users looking to edit or create documents.
One such feature in Vi is the ability to show or hide line numbers. In this article, we’re going over how you can enable line numbers in Vi.
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See Absolute line numbers in Vi
Absolute line numbers are exactly what they sound like. Each line is numbered as you’d expect, starting from going all the way until the file ends. All you have to do to enable them is enter command mode using the Esc key and type the following command.
To disable the line numbers, use this command.
See Relative line numbers in Vi
When you enable relative line numbers, the line your cursor is on becomes line zero, and any lines above or below are incrementally numbered. This comes in handy if you’re looking to base your code around a certain reference or are working with someone to whom you need to point out specific lines relative to a particular line.
To enable relative line numbers, enter command mode using the Esc key and use either of the following commands.
If you want to toggle relative line numbering, add an exclamation mark after the commands. You can disable relative line numbering using these two commands.
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See Hybrid line numbers in Vi
Starting from Vim 7.4 and later, you can enable hybrid line numbers. Under this system, you can see absolute and relative line numbers side by side, making it easy to refer to just about any line in your file.
To enable this, enter command mode by pressing the Esc key and type in the commands for enabling absolute and relative numbering.
:set number relativenumber
Disabling the numbering also works in the same way. Just disable both absolute and relative numbering as you usually would.
How to permanently enable line numbers in Vi?
By default, line numbers are disabled in Vi. To permanently enable them, you’re going to have to append the command for the line numbering you want in the .vimrc file, which manages all Vim configurations.
Just type vim ~/.vimrc to open the file and type in your command as you would in the command mode.
Also read: How to delete lines in Vim?