Re: Remote login... Oh Boy

>> Set your local display variable and if the ports are open and OpenX is
>> running, you will get an echoed Xterminal session to open locally.  If you
>> are using Windows locally, you will need an Xcapable SSH client like
>> Hummingbird.
>> An X program needs two pieces of information in order to connect to an X
>> display.
>>    -
>>    It needs the address of the display, which is typically :0 when you're
>>    logged in locally or :10, :11, etc. when you're logged in remotely (but
>>    the number can change depending on how many X connections are active).
>> The
>>    address of the display is normally indicated in the DISPLAY environment
>>    variable.
>>    -
>>    It needs the password for the display. X display passwords are called
>> *magic
>>    cookies*. Magic cookies are not specified directly: they are always

>>    stored in X authority files, which are a collection of records of the
>> form
>>    “display :42 has cookie 123456”. The X authority file is normally
>>    indicated in the XAUTHORITY environment variable. If $XAUTHORITY is not
>>    set, programs use ~/.Xauthority.
>> You're trying to act on the windows that are displayed on your desktop. If
>> you're the only person using your desktop machine, it's very likely that
>> the display name is :0. Finding the location of the X authority file is
>> harder, because with gdm as set up under Debian squeeze or Ubuntu 10.04,
>> it's in a file with a randomly generated name. (You had no problem before
>> because earlier versions of gdm used the default setting, i.e. cookies
>> stored in ~/.Xauthority.)
>> Getting the values of the variables
>> Here are a few ways to obtain the values of DISPLAY and XAUTHORITY:
>>    -
>>    You can systematically start a screen session from your desktop,
>> perhaps
>>    automatically in your login scripts (from ~/.profile; but do it only if
>>    logging in under X: test if DISPLAY is set to a value beginning
>> with :(that should cover all the cases you're likely to encounter)).
>> In
>>    ~/.profile:
>>    case $DISPLAY in
>>      :*) screen -S local -d -m;;
>>    esac
>>    Then, in the ssh session:
>>    screen -d -r local
>>    -
>>    You could also save the values of DISPLAY and XAUTHORITY in a file and
>>    recall the values. In ~/.profile:
>>    case $DISPLAY in
>>      :*) export | grep -E ' (DISPLAY|XAUTHORITY)='

>>    esac
>>    In the ssh session:
>>    . ~/.local-display-coordinates.**sh
>>    screen
>>    -
>>    You could detect the values of DISPLAY and XAUTHORITY from a running
>>    process. This is harder to automate. You have to figure out the PID of
>> a
>>    process that's connected to the display you want to work on, then get
>> the
>>    environment variables from /proc/$pid/environ (eval export
>>    $(</proc/$pid/environ tr \\0 \\n | grep -E
>> '^(DISPLAY|XAUTHORITY)=')¹).
>> Copying the cookies
>> Another approach is to not try to obtain the value of $XAUTHORITY in the
>> ssh session, but instead to make the X session copy its cookies into
>> ~/.Xauthority. Since the cookies are generated each time you log in, it's
>> not a problem if you keep stale values in ~/.Xauthority.
>> There can be a security issue if your home directory is accessible over
>> NFS
>> or other network file system that allows remote administrators to view its
>> contents. They'd still need to connect to your machine somehow, unless
>> you've enabled X TCP connections (Debian has them off by default). So for
>> most people, this either does not apply (no NFS) or is not a problem (no X
>> TCP connections).
>> To copy cookies when you log into your desktop X session, add the
>> following
>> lines to ~/.xprofile or ~/.profile (or some other script that is read when
>> you log in):
>> case $DISPLAY:$XAUTHORITY in
>>   :*:?*)
>>     # DISPLAY is set and points to a local display, and XAUTHORITY is
>>     # set, so merge the contents of `$XAUTHORITY` into ~/.Xauthority.
>>     XAUTHORITY=~/.Xauthority xauth merge "$XAUTHORITY";;
>> esac
>> ¹ In principle this lacks proper quoting, but in this specific instance
>> $DISPLAY and $XAUTHORITY won't contain any shell metacharacter.

>>> >>         Running Kubuntu 12.04 as primary OS on all boxes here.
>>> >>          I see rlogin, ssh,   blah blah blah.......

>>> >>        Is this going to be a major pain?