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by belak 4115 days ago
Unfortunately, this doesn't scale, as with the AuthorizedKeysCommand, you are required to output all the keys for that user on stdout. Outputing all of the "git" user's authorized keys lines would be an extremely expensive operation.

From the sshd_config man page: "Specifies a program to be used for lookup of the user's public keys. The program will be invoked with its first argument the name of the user being authorized, and should produce on standard output AuthorizedKeys lines"