how to generate sha1 similar to git hash-object command

Question

Any idea why git hash-object has different outcome from shasum and openssl commands ?

➜ printf test | shasum
a94a8fe5ccb19ba61c4c0873d391e987982fbbd3  -

➜  printf test | git hash-object --stdin
30d74d258442c7c65512eafab474568dd706c430

➜  echo -n "test" | shasum
a94a8fe5ccb19ba61c4c0873d391e987982fbbd3  -

http://stackoverflow.com/questions/552659/how-to-assign-a-git-sha1s-to-a-file-without-git/552725#552725 — Vili, Nov 14 '16 at 07:20

score 3 · Accepted Answer · answered Nov 14 '16 at 07:19

3

Git adds a header which contains the type and length of the content and after that it generates the hash. That's why you are getting it different.

Here is a more detailed description.

answered Nov 14 '16 at 07:19

mallaudin

4,744
3
36
68

how to generate sha1 similar to git hash-object command

1 Answers1