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Raw Git Underneath the porcelain and plumbing

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What is git? ● Distributed Version Control System ● A content addressable filesystem ● OMG It’s full of SHA1 hashes! ● With some reference logs to these hashes That’s pretty much it...

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git in 15 seconds

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wtf just happened?

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so many files. ermahgerd.

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its just a graph, really

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with three main objects

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“files” blobs

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“directories” trees

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“references to trees” commits

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and a reference log

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… because its easy let’s do this by hand

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“blob” SP NUL

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does git work now? we made a blob!

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NOPE!

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we need our tree

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“tree” SP NUL NUL

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does git work yet? now we have a tree!

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NOPE!

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still need the commit

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“commit” SP NUL “tree ” LF “author ” LF “committer ” LF LF “” LF

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lol typo

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does git work now?!? ok, we have our objects

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NOPE!

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what gives?

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AKA Let’s glue it all together that pesky reflog

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That’s it!

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git is really simple

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and extremely flexible

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go build your own workflow!

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and don’t be scared to look under the hood

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Thanks!

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github.com/jssjr @scott_sanders