Notes of Atlassian Git Tutorial

Although we have powerful tools such as sourcetree,
learning the details of git is still very necessary.
I found a fantastic tutorial:https://www.atlassian.com/git/tutorials, this is my learning notes.


git log vs git status

git log: showing all the comments in this branch
git status: showing the overview of this branch


Show commits in graph

draw a graph of all comments:

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git log --graph --decorate --oneline    


git diff

  • Using “git diff” to compare two commits.

Undoing Changes

  • “git add …” to update what will be committed(stage changes)
    “git reset to remove the specified file from the staging area, but leave the working directory unchanged.)

  • “git revert ” to generate a new commit that undoes all of the changes introduced in , then apply it to the current branch.

“Whereas reverting is designed to safely undo a public commit, git reset is designed to undo local changes.”


“The git reset --hard and git clean -f commands are your best friends after you’ve made some embarrassing developments in your local repository and want to burn the evidence.”
Example:

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# Edit some existing files
# Add some new files
# Realise you have no idea what you're doing

# Undo changes in tracked files
git reset --hard

# Remove untracked files
git clean -df

Rewriting history

git commit —amend:

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# Edit hello.py and main.py
git add hello.py
git commit

# Realise you forgot to add the changes from main.py
git add main.py
git commit --amend --no-edit

Difference of git fetch and git pull

git pull = git fetch followed by a git merge(remote branch).
Still a little confused.
这篇文章解释的很清楚:http://www.ruanyifeng.com/blog/2014/06/git_remote.html?20160711102657
‘fetch’ is updating the remote branch info, then local branch merge to remote branch !!


git set defaul remote to push

Edit your .git/config

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[branch "master"]
  remote = origin
  merge = refs/heads/master

merge conflict

Automatic merge failed; fix conflicts and then commit the result.
Try: git mergetool



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