osx - brew update permission error yosemite -


when run brew update following error message

$ brew update permission denied (publickey). fatal: not read remote repository.  please make sure have correct access rights , repository exists. error: failure while executing: git pull -q origin refs/heads/master:refs/remotes/origin/master

i on os x yosemite.

github isn't able authenticate you. so, either aren't setup ssh key, because haven't set 1 on machine, or key isn't associated github account.


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