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git -u flag

The -u option automatically sets that repo as the upstream repo for you.

That way, in the future, Git "knows" where you want to push to and
where you want to pull from, so you can use git pull or git push 
without arguments.

-u flag in git command

meaning: git -u flag 

git -u flag

The -u option automatically sets that repo as the upstream repo for you.

That way, in the future, Git "knows" where you want to push to and
where you want to pull from, so you can use git pull or git push 
without arguments.

-u flag in git command

meaning: git -u flag