summaryrefslogtreecommitdiff
path: root/doc/university/training/topics/rollback_commits.md
diff options
context:
space:
mode:
Diffstat (limited to 'doc/university/training/topics/rollback_commits.md')
-rwxr-xr-xdoc/university/training/topics/rollback_commits.md81
1 files changed, 81 insertions, 0 deletions
diff --git a/doc/university/training/topics/rollback_commits.md b/doc/university/training/topics/rollback_commits.md
new file mode 100755
index 00000000000..cf647284604
--- /dev/null
+++ b/doc/university/training/topics/rollback_commits.md
@@ -0,0 +1,81 @@
+# Rollback Commits
+
+----------
+
+## Undo Commits
+
+* Undo last commit putting everything back into the staging area.
+```
+git reset --soft HEAD^
+```
+
+* Add files and change message with:
+```
+git commit --amend -m "New Message"
+```
+
+----------
+
+* Undo last and remove changes
+```
+git reset --hard HEAD^
+```
+
+* Same as last one but for two commits back
+```
+git reset --hard HEAD^^
+```
+
+** Don't reset after pushing **
+
+----------
+
+## Reset Workflow
+
+1. Edit file again 'edit_this_file.rb'
+2. Check status
+3. Add and commit with wrong message
+4. Check log
+5. Amend commit
+6. Check log
+7. Soft reset
+8. Check log
+9. Pull for updates
+10. Push changes
+
+
+----------
+
+## Commands
+
+```
+# Change file edit_this_file.rb
+git status
+git commit -am "kjkfjkg"
+git log
+git commit --amend -m "New comment added"
+git log
+git reset --soft HEAD^
+git log
+git pull origin master
+git push origin master
+```
+
+----------
+
+## Note
+
+* git revert vs git reset
+* Reset removes the commit while revert removes the changes but leaves the commit
+* Revert is safer considering we can revert a revert
+
+```
+# Changed file
+git commit -am "bug introduced"
+git revert HEAD
+# New commit created reverting changes
+# Now we want to re apply the reverted commit
+git log # take hash from the revert commit
+git revert <rev commit hash>
+# reverted commit is back (new commit created again)
+```