Stuff

alias tbk {
      if ($left($3,1) == .) {
      .ban -ku $+ $remove($3,.) $chan $2
      /notice $2 $4-   
    }
    else {   
      .ban -ku $+ $calc( $3 * 60) $chan  $2
      /notice $2 $4-   
    }
    else {
      notice $nick You are not authorised to use this command.
    }
  }
}