How to delete all lines that do NOT contain a certain word in Vim?

The ex command g is very useful for acting on lines that match a pattern. You can use it with the d command, to delete all lines that contain a particular ...

I am trying to search a text file for a certain pattern. If this pattern occurs then it means that the rest of the line is not needed and therefore can be ...

You don't need a global command for this. The substitute command in by itself will suffice by. adding a wildcard; and adding an end-of-line.

I use vim to remove all lines except those that match a particular string, eg :g!/[string that I want to remain in the editor]/d Works great.

You can use :g!/price/d to delete every line that doesn't contain price. As answered below, g! is an alias to v. this is equivalent to :v/price/d.

Use the :global command for that: :3,$g/^#/d You can apply it to lines not matching a pattern: :3,$g!/^#/d You can use the full range mechanism with it.

The ex command g is very useful for acting on lines that match a pattern. You can use it with the d command, to delete all lines that ...

評分 4.3 (261) · Using Vim's powerful “global” command, :g for short. To remove lines matching a pattern, simply use the /d flag to the command.

Summary. Learn how to use Vim's powerful :global command to delete lines matching specific single patterns or multiple patterns.

So from current position, how do I delete all lines up to the next line which contains the matching pattern?