How do I delete all blank lines in a file?
:g/^$/d
The :g/^$/d command deletes every blank line in the file using Vim's powerful global command.
Tag: search
How do I run a search and replace across multiple files?
:cfdo %s/old/new/g | update
The :cfdo %s/old/new/g update command performs a search and replace across every file in the quickfix list and saves each one.
How do I replace the next search match and repeat it easily with dot?
cgn
The cgn command combines the change operator with the gn motion to change the next occurrence of your last search pattern.
How do I search and replace text across an entire file?
:%s/old/new/g
The :%s/old/new/g command replaces all occurrences of old with new across every line in the file.
How do I delete all lines matching a pattern?
:g/pattern/d
The :g/pattern/d command deletes every line in the file that matches the given pattern.