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Add this group and root dir to /etc/ssh/sshd_configconfig (Note that the "chroot directory has to be owned by root and can't be any group-write access", per http://stackoverflow.com/questions/18220104/write-failed-broken-pipe-when-trying-to-login-through-ssh-with-a-specific-use)
'service ssh restart'
Create a new unix user, set its password (unix commands are 'useradd' and 'passwd')
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