How we can delete multiple lines from vi editor at one shot?

Question

I have a large file which has "some string"so many times, i want it to be replaced with "other string" at all places, using vi or vim editor?
Is there any way to do that?

Answer 1

dd Deletes the line the cursor is on.

1) now say you want to delete the 10 line then press 10dd
2) to delete all the line of the file Type gg to move the cursor to the first line of the file, if it is not already there followed by typing dG to delete all the lines.
3) to delete all the lines from the current line just press dG.

Comments

nicely explained.