问题 Mac OSX Lion 10.7. In an effort to get around weird environment stuff (homebrew wasn't installing wget, and I had all sorts of weird blocks and errors), I uninstalled zschrc and homebrew and a bunch of other stuff, then installed fish shell. Now, whenever I try to push/pull to/from github, I get this error: The authenticity of host 'github.com (204.232.175.90)' can't be established. RSA key fingerprint is <string of colon-separated chars that I should probs keep private>. Are you sure you