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45 lines
1.3 KiB
Text
45 lines
1.3 KiB
Text
title = Moving through time
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cards = checkout commit-auto
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[description]
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The yellow boxes are frozen points in time, we call them "commits"! You can travel between them using the "checkout" card! (Try it!)
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The grey panel below shows your current environment - click on an object to inspect or modify it!
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Can you find out what happened here? Then, while on the latest commit, edit the files to fix the problem, and make a new commit!
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[cli]
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To checkout a specific commit, type `git checkout`, then a space, and then right click on the commit you want!
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This will insert the commit's unique identifier!
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[setup]
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echo "This piggy bank belongs to the big sister.
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It contains 10 coins." > piggy_bank
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git add .
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git commit -m "The beginning"
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echo "A young girl with brown, curly hair." > little_sister
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git add .
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git commit -m "Little sister comes in"
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echo "Has 10 coins." >> little_sister
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echo "This piggy bank belongs to the big sister.
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It is empty." > piggy_bank
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git add .
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git commit -m "Little sister does something"
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git checkout HEAD^^
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git branch -df main
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[win]
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# Restore sisterly peace.
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{ git show HEAD:piggy_bank | grep "10 coins"; } && { git show HEAD:little_sister | grep -v "10 coins"; } && { git rev-parse HEAD^^^; }
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[congrats]
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Wonderful! Now that you're getting familiar with the time machine, let's look at some more complicated situations...
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