際際滷

12. ? ? $ sudo apt-get install git

17. master ? b026 26ab 6d7f 48a2

19. $ mkdir dir

20. $ git init

21. $ echo hello > bar.txt

22. $ git add bar.txt

23. $ git commit -m "Initial commit"

24. $ echo happy >> bar.txt ? HEAD

25. $ git add bar.txt ? HEAD

26. $ echo sad >> bar.txt ? HEAD ?

27. $ git commit -m "Initial commit" ? ? HEAD

28. $ git show HEAD ? HEAD

30. master b026 26ab 6d7f 48a2 HEAD

31. master b026 26ab 6d7f 48a2 HEAD HEAD $ git checkout HEAD^^ (or git checkout 26ab)

32. master b026 26ab 6d7f 48a2 HEAD $ cat bar.txt # time travel!!

33. master b026 26ab 6d7f 48a2 HEAD HEAD $ git checkout master

39. ? ? ?

なんちゃって赫庄岳秘壇