git cat-file

Provide content or type and size information for Git repository objects.

More information.

• Get the [s]ize of the HEAD commit in bytes:

git cat-file -s HEAD

• Get the [t]ype (blob, tree, commit, tag) of a given Git object:

git cat-file -t {8c442dc3}

• Pretty-[p]rint the contents of a given Git object based on its type:

git cat-file -p {HEAD~2}

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