git push — Uploading Your Commits

Sending Your Work to the Remote

# First push — set the upstream branch
git push -u origin main

# Subsequent pushes (upstream already set)
git push

# Push a specific branch
git push origin feature-x

The -u flag (or --set-upstream) links your local branch to the remote branch, so future git push / git pull know where to go without specifying the remote and branch every time.

Push rejection

Git refuses to push if the remote has commits you don't have locally:

# Remote is ahead — you must pull first
git pull --rebase     # get remote changes, put yours on top
git push

Force push (use with extreme caution!)

git push --force-with-lease  # safer: fails if remote has changed
git push --force             # dangerous: can destroy others' work

Your Task

A remote named origin is already configured. Push the main branch to it using -u.