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| code> | |
| # 1. Add line4 with a typo, commit | |
| $ echo "line44" >> new.txt | |
| $ git commit -a -m "Added new.txt line4." | |
| # 2. Note our history | |
| $ git l | |
| # sha-a "Added new.txt line4." | |
| # 3. Fix our typo, amend the commit | |
| $ sed -i s/line44/line4/ new.txt | |
| $ git commit -a --amend | |
| # 4. Note history, there is one, different "line4" commit | |
| $ git l | |
| # sha-a' "Added new.txt line4." | |
| # commit sha = hash(timestamp, author, message, repo contents) | |
| # amending always changing the last commit's sha | |
| # 5. Change new, new-b in separate commits | |
| $ echo "line5" >> new.txt | |
| $ git commit -a -m "Added new line5." | |
| $ echo "line3" >> new-b.txt | |
| $ git commit -a -m "Added new-b line3." | |
| # 6. Rebase to re-order the commits | |
| $ git rebase -i HEAD~2 | |
| # oldest is listed first | |
| # pick sha-a "Added new line5." | |
| # pick sha-b "Added new-b line3." | |
| # Change order of lines: | |
| # pick sha-b "Added new-b line3." | |
| # pick sha-a "Added new line5." | |
| # Save/quit | |
| # 7. Note history | |
| $ git l | |
| # 8. We screwed up, pretend line3/line5 never happened | |
| $ git reflog | |
| # Shows what "HEAD" was X commits ago | |
| # Find 'commit (amend): Added line4' | |
| $ git reset --hard HEAD@{N} | |
| $ cat new.txt # no line5 | |
| $ cat new-b.txt # new line3 |
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