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Full Discussion: Questions on CLI and xwindow
Top Forums UNIX for Dummies Questions & Answers Questions on CLI and xwindow Post 302953769 by bakunin on Tuesday 1st of September 2015 08:05:56 AM
Old 09-01-2015
Quote:
Originally Posted by jamie_123
So I am running a linux box using the classical terminal (CTRL+ALT+F1-F6), the machine has an x-window system installed as well, which I do not want to use to launch programs.
hmm - didn't you want to have several CLIs at once? Now i am confused about what you in fact want.

Quote:
Originally Posted by jamie_123
The scenario that I was thinking of was to launch a graphical program from one of these classical terminals. I was wondering, since I have x-window installed, it must be possible to create a window on top of the classical terminal somehow. I hope my question makes more sense now?
The question makes sense, but it isn't possible to do so. Graphical programs are graphical, because they use certain (graphical) functions: on a terminal to display character "a" you simply send an "a". On a graphical application, to display an "a" you need to decide in which font you want it displayed, get the (graphical) definition of the character "a" in the font and the respective size, finally use some graphics routines ("draw line", "draw curve", "fill area", etc.) to finally display a picture resembling an "a". All these functions are carried out (via several layers of software) by the underlying libraries (the X-Server and the Window-Manager) so that for the application itself it boils down to simply order "display an 'a'" again. But without these layers of software underneath the order would not make sense.

If your goal is to start a graphical application using a X-Server running somewhere else (on local hardware or some remote system on the network): this is possible, in fact it is the normal use one makes from graphical environments.

When you start a program (an "X-Client", because it uses services) it needs to be told which X-Server (a program which provides these services) to use. This is is done via an environment variable called "DISPLAY". For instance:

Code:
# export DISPLAY=myrunningxserver.network.org:0.0
# /usr/bin/firefox &

This will (if everything is configured correctly) make firefox run on the system you issued the command but display its window at the system "myrunningxserver.network.org" at display 0 (there could be several displays), screen 0 (every display could consist of several screens).

If you want to know more about how X-Windows works i suggest to read this thread

I hope this helps.

bakunin
 

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LEARN ABOUT OSF1

dtadvfs

dtadvfs(8)						      System Manager's Manual							dtadvfs(8)

NAME

       dtadvfs - Starts the AdvFS graphical user interface

SYNOPSIS

       /usr/bin/X11/dtadvfs [options] [-N] [-C hostname]

OPTIONS

       Turns off information messages about starting up the

       asemgr  utility.   This	message  is displayed at startup and whenever  the file system configuration is changed when the system is running
       TruCluster  Software.  Connects to other hosts that are running the AdvFS GUI daemon, advfsd.

OPERANDS

       Uses the standard X Windows options. See the X(1X) and xterm(1X) reference pages for information.

DESCRIPTION

       The AdvFS graphical user interface (GUI) organizes  AdvFS functionality into system management tasks and makes them  available	through  a
       graphical interface.

       Issue  the  dtadvfs  command to display the AdvFS GUI  Main window. This window serves as both the starting point for all AdvFS GUI-managed
       tasks and as a monitor for file-system status. When the Main window is displayed,  disk-space usage information is shown for the  host  and
       file domains.

       From  the  Main window, you can choose tasks from the following menus: Choose GUI setup options or exit the GUI.  Choose file domain, file-
       set, clone, or volume configuration  tasks.  Choose what information displays on the main window or view  devices and volumes  information.
       Choose file domain balance or defragment procedures.

       Online  help  is available for all tasks and windows available through  the GUI.  To access help, click on the Help button in any window or
       choose  Help from the menu bar to display information.

RESTRICTIONS

       You must be the root user to use this utility and you must register the Advanced File System Utilities license.

FILES

       /Storage_Management/Dtadvfs

	      The indicator for graphic icons.	The dtadvfs message log file. Remove or  copy this log to another location periodically to prevent
	      the  log from becoming  too large.  The AdvFS Manager user-interface executable file.  The dtadvfs online help files.  The dtadvfs X
	      resource file.  The dtadvfs message catalogs.  The GUI graphic icon files.  The launch script for the graphic icons.

SEE ALSO

       advfs(4), advfsd(8), X(1X), xterm(1X)

																	dtadvfs(8)
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