Global (`:g`) and Vglobal (`:v`)

"Run a command on every line that matches."

Keys: :g, :v

:g/pattern/cmd runs cmd on every line matching pattern. :v inverts (every non-matching line). Combine with :d to delete-by-pattern, with :s to substitute-by-pattern, with :norm to do anything.

Global and Vglobal

:g/pattern/cmd is read as: for every line matching pattern, run cmd. It's how you do bulk operations gated by a search.

Command	Effect
`:g/TODO/p`	Print every line containing `TODO`
`:g/TODO/d`	Delete every line containing `TODO`
`:v/TODO/d`	Delete every line not containing `TODO`
`:g/^$/d`	Delete all blank lines
`:g/^/m0`	Reverse the file (move every line to top)
`:g/foo/s//bar/g`	Substitute on matching lines
`:g/^class /norm o pass`	On every class declaration, open new line + insert `pass`