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Git Cheat Sheet

Template commands for common situations.

This assumes you are already familiar with the basics: push, pull, commit, clone, merge.

Detached State

  • I’ve switched to an earlier version and now I’m detached, how do I get back to a working state with all the stuff I don’t see any more?
    git checkout master
    (or any other branch name)

  • I’m detached, but I don’t want to go back to master. How do I create a new branch from here so I don’t interfere with the work of others?
    git branch my-new-branch
    git checkout my-new-branch
    (Or as a single command: git checkout -b my-new-branch)
    git push --set-upstream origin my-new-branch

Remote Branches

  • Change to a branch that is on origin but not yet on my local system
    git status
    => lists e.g. remotes/origin/foo
    git checkout foo (=> spare the prefix!)

Target File Diffs

  • Compare this file with version of file in other branch, diff:
    git diff mybranch master -- myfile.cs
    (Note: make sure the local branched are up to date, to see the actual diffs.)

  • Show me last commits that changes specific file
    git log path/to/my.file

Restore a Single File

  • If I am on non-master, overwrite a specific file / dir with version from master.
    git checkout master -- path/to/file

Abandon Merge

  • Abandon unsuccessful merge, discard all unmerged files
    git reset --hard HEAD

Kill Branch

  • Delete a branch that I don’t need any more (local and remote) (do this after merged into master)
    git branch -d rif-ram-mapping-validator
    git push --delete origin rif-ram-mapping-validator

  • Show all merged branches
    git branch --merged master

  • Show all unmerged branches
    git branch --no-merged

Erroneous Commits

  • Omg I have some commits I really want to get rid of:

Disclaimer, if you’ve already pushed and you do this, tell your team mates or they will hate you!

  • local only:
    git reset --hard commithashhereoflaststableversion -i already pushed:
    git reset --hard commithashhereoflaststableversion
    git push --force origin restify-study-release
  • Verify it worked:
    git diff restify-user-study..origin/restify-user-study

Tags

  • Show me all tagged commits:
    git tag

  • Tag a commit so I find it again later: (tags have no spaces, but can have a message)
    git tag myFunnytagNameWithoutSpaces
    OR:
    git tag -m “My message for my tag” myFunnyTagNameWithoutSpaces theactualcommithash

  • Push a tag so others can use it, too:
    git push origin muFunnyTagNameWithoutSpaces

Rebase

Rebase is better than merge, because it places copies of the original commits on the target branch, instead of a single merge commit.

Syntax:
1) Start with branch that has the commits you want to relocate (copy)  
```git checkout my-branch-with-unmerged features```
2) Rebase things to the target branch (afterwards the feature branch commits are aligned to latest commit of target branch (but still on feature branch)  
```git rebase my-target-branch```
3) Actually get things to the target branch  
```git checkout my-target branch```  
```git rebase my branch-with-unmerged-features```