Intro to Git for the Perl Hacker

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Intro to Git! for Perl Hackers! ! ! Mark Allen! [email protected]! @bytemeorg! http://byte-me.org! https://github.com/mrallen1! https://metacpan.org/author/MALLEN!

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Distributed ! Version ! Control! System!

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Fast! !

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Tons of features! !

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Uses lots of Perl internally! !

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Perl itself and many CPAN authors use it.! !

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Worst. Interface. Evar.!

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1.  Terms and lingo! 2.  Basic workﬂow! 3.  Topic branches! 4.  Starting and/or contributing to github projects.! 5.  Cool Perl stuff!

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Terms / Lingo http://marklodato.github.com/visual-git-guide/index-en.html!

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Terms / Lingo http://marklodato.github.com/visual-git-guide/index-en.html!

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Basics subversion! ! $ svn co \! https://example.com! $ vim myfile.pl! $ svn status! $ svn diff! $ svn ci -m'My commit'! git! ! $ git clone \! https://example.com! $ vim myfile.pl! $ git status! $ git add -- myfile.pl! $ git diff! $ git commit \! -m'My commit'! $ git push!

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Basics ! $ git clone https://example.com! $ vim myfile.pl! $ git diff! $ git add myfile.pl ! $ git status! $ git commit -m'My commit'! $ git push origin master! origin Where What

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I want to...! !create a new local repository! $ mkdir myproject! $ cd myproject! $ git init! Basics

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I want to...! ! ! !copy a remote repository! ! $ git clone https://example.com! $ git clone [email protected]:project.git! Basics

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I want to...! ! ! !stage a ﬁle for a commit! ! $ git add -- myfile.pl! Basics

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I want to...! create a commit! ! $ git commit! Basics

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I want to...! add to the last commit! ! $ git commit --amend! Basics

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I want to...! ! ! diff against a commit! ! $ git diff! $ git diff HEAD^! $ git diff HEAD~4! $ git diff 1bc38 -- myfile.pl! Basics

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I want to...! ! ! ! see commit history! ! $ git log! Basics

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I want to...! ! ! !update a local repository! ! $ git pull! Basics

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I want to...! give a commit a memorable reference! ! $ git tag mytag 1bec3! $ git push --tags! $ git diff mytag -- a.pl! Basics

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I want to...! add a remote storage location! ! $ git remote add origin https://example.com! ! -also-! ! $ git remote rm origin! Basics

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I want to...! push my local work to a remote location! ! $ git push! $ git push -u origin foo! Basics

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I want to...! temporarily save my work  and work on something else! $ git stash! # ...! $ git stash pop! Basics

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Git commands ! •  are (mostly) scripts! •  bash, perl, python! •  you can extend!

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Topic branches! ! •  What are they?! •  Why are they useful?! •  How do you use them?! Topic branches

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$ git branch rt14322! $ git checkout rt14322! -or-! $ git checkout -b rt14322! ...! Topic branches

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$ git checkout master! $ git merge rt14322! Topic branches

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GitHub

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GitHub

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GitHub https://github.com/signup/free!

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GitHub

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GitHub

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GitHub

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GitHub

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GitHub

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GitHub

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GitHub

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GitHub

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GitHub

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GitHub

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GitHub

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GitHub Congratulations, your pull request was submitted!! ! Things to do now:! • Relax! • Have a beer! • Enjoy the accolades of a grateful Perl community!

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GitHub Use META.json to list code repo location. ! This example is for Module::Build!

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GitHub

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Augh! My CPAN module(s) are in CVS or SVN!! •  I'm sorry for your pain.! •  Github has tools and guides to help you migrate!

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Cool Perl Stuff! •  git-status-tackle! •  Git::Wrapper! •  App::GitHub! •  Pithub (GitHub API module)! ! Perl

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Git::CPAN::Patch! ! $ mkdir Foo-Bar! $ git cpan-init Foo::Bar! $ git checkout -b quux! # ... hack hack ...! $ git commit -am "Add quux"! $ git cpan-sendpatch --compose! Perl

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Resources:! •  https://speakerdeck.com/u/mrallen1/p/intro-to-git! •  https://github.com/mrallen1/Acme-Github-Test (fork, send pull requests, experiment, etc)! •  http://git-scm.com (binaries, docs, tutorials)! •  http://marklodato.github.com/visual-git-guide/ index-en.html! ! https://tinyurl.com/git4perl!

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Thank you!! Questions?! https://tinyurl.com/git4perl!