i currently try to setup an rails project with deprec
(http://deprec.org). i have executed the command “deprec --apply-to .”
in my rails project directory and edited the condig/deploy.rb.
Then i have tried “cap install_rails_stack” and i got the following
command “sudo groups daniel | grep ’ deploy ’ || sudo /usr/sbin/usermod -G deploy -a daniel” failed on www.host.com
invalid option -a
know anybody what i could do ?