How to empty the file content in vi editor

Question

I have a log file on a server called log.txt which has many lines. I open the file using the vi editor, and I want to empty the file content in command line mode of the vi editor. What's the key combination? please help me. Thank you!!!

Answer 1

First come out front input mode by pressing ESC key then apply gg to go to first line and then type dG to delete everything.after that save the file with :w command that way you will have a blank file:)