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38 lines
1.1 KiB
Text
38 lines
1.1 KiB
Text
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[description]
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Blobs usually represent the content of a file. But on their own, they don't have any metadata, not even a name!
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Git has a very powerful concept to store metadata related to blobs: the index! It's a list that relates blobs to filenames and access permissions.
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The most convenient option to add an entry to the index is via an existing file:
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echo "my content" > file
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git update-index --add file
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Add three entries to the index! For a bonus challenge: can you add a file that is inside of a directory, like "directory/file"?
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[congrats]
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There's another way to add an entry to the index directly:
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git update-index --add --cacheinfo <mode>,<blobhash>,<name>
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The first three numbers of the mode describe the type of the entry, "100" is a regular file.
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The second three number describe the permissions. Only "644" (non-executable) and "755" (executable) are supported.
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You can insert the hash of an object into the terminal by right-clicking on it! :)
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[setup]
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[setup goal]
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echo "file 1" > file1
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echo "file 2" > file2
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echo "file 3" > file3
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git add .
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[win]
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test "$(git ls-files | wc -l)" -ge 3
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