2020-10-29 15:55:10 +01:00
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title = Moving through time
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cards = checkout commit-auto
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2020-10-22 16:19:22 +02:00
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2020-10-22 14:01:08 +02:00
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[description]
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2020-10-29 15:55:10 +01:00
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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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2020-10-22 14:01:08 +02:00
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2020-10-30 19:41:15 +01:00
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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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2020-10-22 14:01:08 +02:00
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2020-10-29 15:55:10 +01:00
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Can you find out what happened here? Then, come back to the latest commit, and fix the problem, using the "commit" card!
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2020-10-22 14:01:08 +02:00
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[setup]
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mkdir room1 room2
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echo "A young girl with brown, curly hair." > room1/little_sister
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echo "This piggy bank belongs to the big sister.
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It contains 10 coins." > room2/piggy_bank
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git add .
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git commit -m "The beginning"
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mv room1/little_sister room2
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git add .
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git commit -m "Little sister walks over"
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echo "Has 10 coins." >> room2/little_sister
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echo "This piggy bank belongs to the big sister.
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It is empty." > room2/piggy_bank
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git add .
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git commit -m "Little sister does something"
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mv room2/little_sister room1
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git add .
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git commit -m "Little sister walks back"
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2020-10-29 15:55:10 +01:00
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git checkout --detach
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git branch -d main
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2020-10-22 14:01:08 +02:00
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[win]
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2020-10-29 15:55:10 +01:00
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{ git show HEAD:room2/piggy_bank | grep "10 coins"; } && { git show HEAD:room1/little_sister | grep -v "10 coins"; } && { git rev-parse HEAD^; }
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2020-10-22 14:01:08 +02:00
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[congrats]
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2020-10-29 20:02:43 +01:00
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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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