Generate an authorized_keys file:

When working with borg serve in an automated environment, you should use an authorized_keys file that restricts the ssh sessions to use only borg, and only in the directory where the repo they should use lies in. This binary takes in a json file specifying the needed info and prints out the wanted authorized_keys file.

To generate that file, do this (assuming you have set up everything needed for go get, and $GOPATH/bin is in your $PATH):

go get git.jcg.re/jcgruenhage/borg-gen-auth-keys
borg-gen-auth-keys yourjsonfile.json > ~/.ssh/authorized_keys