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| git_cheat_sheet [2020/08/12 20:45] – stephen | git_cheat_sheet [2024/06/17 09:49] (current) – external edit 127.0.0.1 |
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| editor = 'C:/Program Files (x86)/Notepad++/notepad++.exe' -multiInst -notabbar -nosession | editor = 'C:/Program Files (x86)/Notepad++/notepad++.exe' -multiInst -notabbar -nosession |
| pager = cat | pager = cat |
| | longpaths = true |
| |
| [user] | [user] |
| name = Stephen Heise | name = Stephen Heise |
| email = Stephen@tallguyracing.com | email = Stephen@tallguyracing.com |
| | |
| | [init] |
| | defaultBranch = main |
| |
| [mergetool] | [mergetool] |
| cmd = "/c/Program\\ Files\\ \\(x86\\)/WinMerge/WinMergeU.exe" -u -e $LOCAL $REMOTE | cmd = "/c/Program\\ Files\\ \\(x86\\)/WinMerge/WinMergeU.exe" -u -e $LOCAL $REMOTE |
| |
| | [push] |
| | default = current |
| | autoSetupRemote = true |
| | |
| [alias] | [alias] |
| st = status | st = status |
| ci = commit -m | ci = commit -m |
| ca = commit --amend | ca = commit --amend --no-edit |
| br = branch | br = branch |
| ba = branch -a | ba = branch -a |
| dt = difftool | dt = difftool |
| fa = fetch -a | fa = fetch -a |
| md = merge origin/develop | tf = !git reset && git checkout -- . && git clean -df |
| cd = checkout develop | as = !git add . && git stash |
| pp = !git pull && git push | pr = !git stash pop && git reset |
| | brdr = push --delete origin |
| | fp = push --force |
| | cp = cherry-pick |
| ln = !git --no-pager log -n50 '--pretty=format:"%Cred%h%Creset %ad %Cgreen%<(10,trunc)%an%Creset %<(80,trunc)%s"' '--date=format:"%Y%m%d %H%M%S"' | ln = !git --no-pager log -n50 '--pretty=format:"%Cred%h%Creset %ad %Cgreen%<(10,trunc)%an%Creset %<(80,trunc)%s"' '--date=format:"%Y%m%d %H%M%S"' |
| | ro2m = !echo 'Rebasing onto master' && git fetch origin master:master && git rebase --onto master master && git pull -r origin master |
| | ro2mfp = !git ro2m && echo 'Force pushing' && git fp |
| |
| [winUpdater] | [winUpdater] |
| | ''<nowiki>git log</nowiki>'' | | | | ''<nowiki>git log</nowiki>'' | | |
| | ''<nowiki>git remote add origin https://whatever.com</nowiki>'' | | | | ''<nowiki>git remote add origin https://whatever.com</nowiki>'' | | |
| | ''<nowiki>git push -u origin master</nowiki>'' | -u means remember these settings | | | ''<nowiki>git push -u origin master</nowiki>'' | ''<nowiki>-u</nowiki>'' means remember these settings | |
| | ''<nowiki>git pull origin master</nowiki>'' | | | | ''<nowiki>git pull origin master</nowiki>'' | | |
| | ''<nowiki>git diff head</nowiki>'' | | | | ''<nowiki>git diff head</nowiki>'' | | |
| | ''<nowiki>git diff --staged</nowiki>'' | | | | ''<nowiki>git diff --staged</nowiki>'' | | |
| | ''<nowiki>git reset octofamily/octodog.txt</nowiki>'' | unstages a file | | | ''<nowiki>git reset octofamily/octodog.txt</nowiki>'' | Unstages a file. | |
| | ''<nowiki>git checkout -- octocat.txt</nowiki>'' | go back to last checkout / undo | | | ''<nowiki>git checkout -- octocat.txt</nowiki>'' | Go back to last checkout / undo. | |
| | ''<nowiki>git reset --hard origin/master</nowiki>'' | Throw away all local commits. | | | ''<nowiki>git reset --hard origin/master</nowiki>'' | Throw away all local commits. | |
| | ''<nowiki>git branch -a</nowiki>'' | Show local and remote branches. | | | ''<nowiki>git branch -a</nowiki>'' | Show local and remote branches. | |
| | ''<nowiki>git push origin <hash>:<branch></nowiki>'' | Push up to a certain commit. | | | ''<nowiki>git push origin <hash>:<branch></nowiki>'' | Push up to a certain commit. | |
| | ''<nowiki>git push origin HEAD~10:<branch></nowiki>'' | Push up to the last 10 commits. | | | ''<nowiki>git push origin HEAD~10:<branch></nowiki>'' | Push up to the last 10 commits. | |
| | | ''<nowiki>git push origin HEAD~10:$(git rev-parse --abbrev-ref HEAD)</nowiki>'' | Push up to the last 10 commits. | |
| | | ''<nowiki>git push --force origin HEAD~10:$(git rev-parse --abbrev-ref HEAD)</nowiki>'' | Force push up to the last 10 commits. | |
| | ''<nowiki>gitk</nowiki>'' | A commit viewer. | | | ''<nowiki>gitk</nowiki>'' | A commit viewer. | |
| | ''<nowiki>gitk 'stash@{0}'</nowiki>'' | View the contents of the first stash. | | | ''<nowiki>gitk 'stash@{0}'</nowiki>'' | View the contents of the first stash. | |
| | ''<nowiki>git tag -a tagname -m "commit comment"</nowiki>'' | Annotated tag (preferred over lightweight tags). | | | ''<nowiki>gitk --all $(git fsck --no-reflog | Select-String "(dangling commit )(.*)" | %{ $_.Line.Split(' ')[2] })</nowiki>'' | Find a dropped stash. | |
| | ''<nowiki>git tag tagname</nowiki>'' | Lightweight tag (good for temporary tags). | | | ''<nowiki>git tag -a <tagname> -m "commit comment"</nowiki>'' | Annotated tag (preferred over lightweight tags). | |
| | | ''<nowiki>git tag <tagname></nowiki>''\\ ''<nowiki>git push origin <tagname></nowiki>'' | Lightweight tag (good for temporary tags). | |
| | ''<nowiki>git rebase --interactive 44447348...</nowiki>'' | Fix up unpushed commit messages. '44447348...' = parent commit hash. | | | ''<nowiki>git rebase --interactive 44447348...</nowiki>'' | Fix up unpushed commit messages. '44447348...' = parent commit hash. | |
| | ''<nowiki>git log --no-merges --oneline develop..</nowiki>'' | Show all commits on the current branch. | | | ''<nowiki>git log --no-merges --oneline develop..</nowiki>'' | Show all commits on the current branch. | |
| | | ''<nowiki>git cherry-pick ebe6942^..905e279</nowiki>'' | Cherry-pick an //inclusive// commit range. | |
| | | ''<nowiki>git remote -v</nowiki>'' | View remote / origin URL. | |
| |
| ===== Workflows ===== | ===== Workflows ===== |
| |
| | ''<nowiki>git checkout master</nowiki>'' | | | | ''<nowiki>git checkout master</nowiki>'' | | |
| | ''<nowiki>git merge branch-name</nowiki>'' | | | | ''<nowiki>git merge <branch-name></nowiki>'' | | |
| |
| ==== Delete branch ==== | ==== Delete branch ==== |
| | ''<nowiki>git br -m masterfixed master</nowiki>'' | | | | ''<nowiki>git br -m masterfixed master</nowiki>'' | | |
| | ''<nowiki>git push origin --set-upstream master</nowiki>'' | | | | ''<nowiki>git push origin --set-upstream master</nowiki>'' | | |
| | |
| | ==== Rebase onto master ==== |
| | |
| | | ''<nowiki>git fetch origin master:master</nowiki>'' | Update the master branch. | |
| | | ''<nowiki>git rebase --onto master <source-branch></nowiki>'' | For example, <source-branch> = '2021.3.7946'. | |
| | | ''<nowiki>git pull -r origin master</nowiki>'' | | |
| | | ''<nowiki>git push --force</nowiki>'' | | |
| | |
| | ==== Split up an existing commit ==== |
| | |
| | | ''<nowiki>git rebase -i</nowiki>'' | | |
| | | Mark commit to be split with 'e' | | |
| | | Save & close | | |
| | | When the rebasing has stopped... | | |
| | | ''<nowiki>git reset HEAD~</nowiki>'' | | |
| | | Edit & commit. | | |
| | | ''<nowiki>git rebase --continue</nowiki>'' | | |
| | |
| | ==== Set up a bare repo ==== |
| | |
| | | ''<nowiki>git init --bare BareRepo</nowiki>'' | | |
| | | ''<nowiki>git clone .\BareRepo\ LocalRepo</nowiki>'' | URL will be something like ''<nowiki>file:///C:/Temp/BareRepo</nowiki>'' | |
| | | ''<nowiki>git ci "Initial commit." --allow-empty</nowiki>'' | If you need an initial commit. | |
| | |
| | ==== Create a test repo ==== |
| | |
| | <code powershell> |
| | $scriptpath = Split-Path $MyInvocation.MyCommand.Path |
| | Push-Location $scriptpath |
| | |
| | $remoteRepoName = 'RemoteRepo' |
| | $localRepoName = 'LocalRepo' |
| | |
| | mkdir $remoteRepoName |
| | git init --bare $remoteRepoName |
| | git clone $remoteRepoName $localRepoName |
| | |
| | # Create an initial commit - optional |
| | git --git-dir "$localRepoName/.git" commit --allow-empty -m 'Initial commit.' |
| | git --git-dir "$localRepoName/.git" push |
| | |
| | Pop-Location |
| | </code> |
| |
| ===== Import from SVN ===== | ===== Import from SVN ===== |
| git svn clone https://ares/svn/SVNRepository/Presentations --no-metadata --tags=Tags --trunk=Trunk --branches=Branches --authors-file=..\users.txt | git svn clone https://ares/svn/SVNRepository/Presentations --no-metadata --tags=Tags --trunk=Trunk --branches=Branches --authors-file=..\users.txt |
| </code> | </code> |
| | |
| | ===== Who needs to clean up ===== |
| | |
| | Lists the author and date of the last commit on each remote branch. Need to run it on bash. |
| | |
| | <code> |
| | for branch in `git branch -r | grep -v HEAD`;do echo -e `git show --format="%ai %ar by %an" $branch | head -n 1` \\t$branch; done | sort -r |
| | </code> |
| | |
| | ===== How PRs work ===== |
| | |
| | When you create a PR on GitHub, it also creates some other refs for you. Different providers put these in different locations. |
| | |
| | GitHub puts them under ''refs/pulls''. I don’t believe that git has any rules around these refs, providers can define them however they want. |
| | |
| | If you run ''git ls-remote <remote-name>'' on a repo, you’ll see all of these other magic refs coming through. |
| | |
| | On a GitHub repo with some active and completed pull requests, I see these ones (PR #2 has been closed, PR #1 is still open): |
| | |
| | 5003f86523fa07e325d28f50a749685b93dffcf3 refs/pull/1/head |
| | 57c72505a9beed608fe73f474e77b70cd182616f refs/pull/1/merge |
| | 622ba67a9d1279984dc763eb078d0e5d92ae790f refs/pull/2/head |
| | |
| | I believe that ''pull/1/head'' points to the head of the source branch. Source branch is ''dev'', and it’s pointing at the same commit, so that seems correct ''5003f86523fa07e325d28f50a749685b93dffcf3 refs/heads/dev''. |
| | |
| | ''pull/1/merge'' is what I think they’re referring to as the ‘merge branch’. It’s what the target branch will look like once the PR has merged. |
| | |
| | Note that it’s a different commit hash to main ''7adb1c92faa0ef0065e3aedb95fcdc4f523d79e3 refs/heads/main'' because it’s a different commit. |
| | |
| | Now… to show when and how this changes I’ll need to create a new PR because there are conflicts on that example PR that I’m using. |
| | |
| | As a side note: It seems as though these ''refs/pulls/<number>/merge'' refs just stay where they are if there are conflicts. They don’t go away, they just don’t update. Anyway… |
| | |
| | Say we have a default branch ''main'' and some branch with some changes called ''some-changes''. Here is what the refs look like on the remote. |
| | |
| | a94afcad87e765e18d590cc4090a835e210acca6 refs/heads/main |
| | e6317c4e97a465fe2f024e5a3cd5ff3f12c5f6a6 refs/heads/some-changes |
| | |
| | Once I create a PR to merge ''some-changes'' into ''main'' two more refs are added: |
| | |
| | a94afcad87e765e18d590cc4090a835e210acca6 refs/heads/main |
| | e6317c4e97a465fe2f024e5a3cd5ff3f12c5f6a6 refs/heads/some-changes |
| | e6317c4e97a465fe2f024e5a3cd5ff3f12c5f6a6 refs/pull/3/head |
| | 6b33d262276e1e5d520ffb8063dedffd6296664d refs/pull/3/merge |
| | |
| | Note ''pull/3/head'' is the same as ''heads/some-changes''. ''pull/3/merge'' is pointing to some other magic commit that doesn’t really exist anywhere. That’s GitHub merging it in the background and creating a ref of what it will look like. |
| | |
| | If I push changes to ''main'', here is what our refs look like: |
| | |
| | 442fcf2d421c26f75339a82bd364d5fcc3bc0a52 refs/heads/main |
| | e6317c4e97a465fe2f024e5a3cd5ff3f12c5f6a6 refs/heads/some-changes |
| | e6317c4e97a465fe2f024e5a3cd5ff3f12c5f6a6 refs/pull/3/head |
| | 3a58fb072ff48e8bebf2c66491332556f3f935ef refs/pull/3/merge |
| | |
| | ''heads/main'' has changed because I made a commit there. ''pull/3/merge'' has changed because the merge of those two branches now looks different. ''heads/some-changes'' and ''pull/3/head'' are the same because they haven’t moved. |
| | |
| | As for what these branches are used for: This is very useful for making sure that your code will still be valid after the merge is complete (not just in your branch). |
| | If there are any changes to the source or target branches, ''refs/pull/<number>/merge'' will update. Useful for stopping poison merges. |
| | |
| |
