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What command can I use to print out the commit id of HEAD?

This is what I'm doing by hand:

$ cat .git/HEAD

ref: refs/heads/v3.3

$ cat .git/refs/heads/v3.3


But I need a script that can reliably pipe the output of some command to a text file such that the text file contains exactly the commit id of HEAD (nothing more or less, and not just a ref). Can anyone help?

1 Answer

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by (51.2k points)

Use the command that will help you to display head commit id for that you could use:

git rev-parse HEAD

For the short version:

git rev-parse --short HEAD

Reference: https://git-scm.com/docs/git-rev-parse#_revision_range_summary 

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