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Source  : 16a41d4
Branch  : main
Author  : Alex Ball <[email protected]>
Time    : 2025-08-14 08:32:08 +0000
Message : Merge pull request #182 from alex-ball/patch-166

Add challenge around "git push"

Author: actions-user

03-sharing.md

@@ -394,6 +394,39 @@ To https://github.com/<your_github_username>/hello-world
 
 And let's check on GitHub that we now have 2 commits there.
 
+::::::::::::::::::::::::::::::::: challenge
+
+## Challenge: Two different push commands
+
+The first time we pushed our changes, we used a longer command:
+
+```bash
+$ git push -u origin main
+```
+
+The second time, we used a shorter command:
+
+```bash
+$ git push
+```
+
+Why didn't we use the same command both times?
+
+::::::::::::::::: solution
+
+Branches can be configured with an "upstream" branch (a branch on a remote repository),
+which is used automatically for `push` and `pull` operations.
+
+The `main` branch's upstream wasn't set when we created it.
+The `-u` (or `--set-upstream`) flag tells `git push` which remote branch to use;
+it also sets the remote branch as the local branch's upstream.
+Once we've set it, we don't need to specify the remote branch in future `push` and `pull` operations.
+This saves on typing and means we won't `push` to or `pull` from the wrong remote branch.
+
+::::::::::::::::::::::::::
+
+:::::::::::::::::::::::::::::::::::::::::::
+
 ## Pulling changes
 
 When working with others, or when we're making our own changes from different machines, we need a way of pulling those

md5sum.txt

@@ -6,7 +6,7 @@
 "index.md" "773cf78e1289f5ca1461848f3c59dfdb" "site/built/index.md" "2023-04-21"
 "episodes/01-what-is-git.md" "445007d28cfc4ea532840d493b6d10e6" "site/built/01-what-is-git.md" "2024-07-03"
 "episodes/02-getting-started.md" "a706fb1eba599733b9f6513b218fe017" "site/built/02-getting-started.md" "2024-07-03"
-"episodes/03-sharing.md" "6e5e132d79497cf366995769a8b911c9" "site/built/03-sharing.md" "2025-06-02"
+"episodes/03-sharing.md" "2ebf04d7dbd6bb52bcd799fb62860d17" "site/built/03-sharing.md" "2025-08-14"
 "episodes/04-review.md" "9e589dcefa2ff8f2d9ce79e2f5eda5df" "site/built/04-review.md" "2023-04-21"
 "episodes/05-github-pages.md" "785565f4f08d619905fd0104496ce055" "site/built/05-github-pages.md" "2025-08-12"
 "instructors/instructor-notes.md" "a45553efc112e3823f231cc16c2da968" "site/built/instructor-notes.md" "2023-04-21"