1. a helyi repository-dban csinálj 5 commitot

git commit -a -m "first commit"
git commit -am "second commit"

2. nézd meg a különbséget az egyes commitok között command line-ban

git log --graph --oneline
git diff 6e0a6e3..d3bc211 -- color

3. vond vissza a legutolsó 3-t

git reset --hard 765237a

4. csinálj egy következőt

git commit -am "fifth commit"

5. vedd ki a 2. commitot és branchelj onnan

git log --graph --oneline
git checkout 94f77f7 


6. a branchen legye 2 kommit
7. mergelj vissza a masterre

challenge accepted, mert az első sorba most beleírtam. I am lovin' it!

MEGOLDÁSOK:

IV.
1. az egyik már dina sandboxos fájl adott sorában változtass valamit
	git clone URL LOKÁLDIR
	README szerkesztése

2. kérj meg valakit hogy ugyanott változtasson
	ZSOLT is beleírt

3. akit megkértél commitolja be és küldje fel
	Megtette

4. frissits
	~/Desktop/sandbox[master]$ git pull origin
	remote: Counting objects: 5, done.
	remote: Total 3 (delta 0), reused 3 (delta 0)
	Unpacking objects: 100% (3/3), done.
	From github.com:digitalnatives/sandbox
	   d3bc211..eab9c8e  master     -> origin/master
	Updating d3bc211..eab9c8e
	error: Your local changes to the following files would be overwritten by merge:
		README
	Please, commit your changes or stash them before you can merge.
	Aborting

5. old meg a merge conflictot
	Stash és pull használatával

	~/Desktop/sandbox[master]$ git stash 
	Saved working directory and index state WIP on master: d3bc211 first commit
	HEAD is now at d3bc211 first commit
	~/Desktop/sandbox[master]$ git status
	# On branch master
	# Your branch is behind 'origin/master' by 1 commit, and can be fast-forwarded.
	#
	nothing to commit (working directory clean)

	~/Desktop/sandbox[master]$ git stash list
	stash@{0}: WIP on master: d3bc211 first commit

	~/Desktop/sandbox[master]$ git pull origin master
	remote: Counting objects: 21, done.
	remote: Compressing objects: 100% (9/9), done.
	remote: Total 19 (delta 5), reused 19 (delta 5)
	Unpacking objects: 100% (19/19), done.
	From github.com:digitalnatives/sandbox
	 * branch            master     -> FETCH_HEAD
	Updating d3bc211..ad7aa6e
	Fast-forward
	 README    |    1 +
	 test_file |    2 ++
	 valami    |    1 +
	 xy        |    4 ++++
	 4 files changed, 8 insertions(+), 0 deletions(-)
	 create mode 100644 test_file
	 create mode 100644 valami
	 create mode 100644 xy
	~/Desktop/sandbox[master]$ git stash pop
	Auto-merging README
	CONFLICT (content): Merge conflict in README

	~/Desktop/sandbox[master]$ mcedit README 

	~/Desktop/sandbox[master]$ git add .
	~/Desktop/sandbox[master]$ git commit -m"Merged conflict"
	[master 4f32715] Merged conflict
	 1 files changed, 1 insertions(+), 1 deletions(-)

	Counting objects: 5, done.
	Delta compression using up to 4 threads.
	Compressing objects: 100% (3/3), done.
	Writing objects: 100% (3/3), 412 bytes, done.
	Total 3 (delta 0), reused 0 (delta 0)
	To git@github.com:digitalnatives/sandbox.git
	   ad7aa6e..4f32715  master -> master