Using git diff, how can I get added and modified lines numbers?

Question

Assuming I have a text file

alex
bob
matrix
will be removed
git repo

and I have updated it to be

alex
new line here
another         


        

Answer 1

You can use git diff coupled with shortstat parameter to just show the no of lines changed.

For the no of lines changed (in a file that's already in the repo) since your last commit

git diff HEAD --shortstat

It'll output something similar to

1 file changed, 4 insertions(+)