function _connect() {
        COMPREPLY=()
        local currentWord=${COMP_WORDS[COMP_CWORD]}
        local completeHosts=$(cat /etc/passwd|grep "/var/www"|cut -d ':' -f 1)

        COMPREPLY=($(compgen -W "$completeHosts" -- "$currentWord"))
        return 0
}

complete -F _connect groot