X Window system - concept Post: 302555261

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Top Forums UNIX for Dummies Questions & Answers X Window system - concept Post 302555261 by messi777 on Wednesday 14th of September 2011 09:35:30 AM

09-14-2011

Registered User

X Window system - concept

Hi, I am lost in between of some concepts, googling too much made me like this! honestly...

please correct my statements below and if they are correct just mention "correct" or also add extra info please:

1. "X Window System" provides basic access to GUI on unix/linux systems
This GUI can be :
- Desktop (gnome, kde)
- Pure window manager
- basic desktop like CDE
2. Normally when we boot the system the X window system is read from some config file and the display is set and then the desktop shows up (either gnome or kde) -- we never realize the process because they are in background (process of X window start up and configuration)

where these config files are located? or one file only?

3. But when we do not have any desktop like gnome or kde. and we only have shell prompt after booting the system, its time to start the X window manually (Am I right?)

if we do not have the X server installed, we should install it? in each distro it has a different package naming?

after making sure the X window installed... (How to make sure we do have X window? let's say in redhat!)

4. then we should initialize it first by "xinit" ???? (Am I correct)
if we are running window manager we shoudl do this:

xinit -e <absolute path to WM>
5. after xinit we should start the server X by "startx" ????

6. setting the display? what is this display? i can not communicate with this word!!! nobody has explained me anything, and while googling I just grab ideas!!! I dont have a robust understanding from this display setting. then how to export it?

for the above 4,5,6 we can write them down into xinitrc file in home? and then we dont have to run them every time we boot the system? Right?

<< the window x system can only be access locally? right? I can not remote it via putty and try to run it? or set it? right? (again I have to apologize because not a good understanding)

How to stop the window manager? should I kill the process? and then kill the X window?
the process name is xinit?

what can I do to automate all these steps. when I press the button of power-on on my laptop, I want to get my X started and my window manager started as well. is that possible?

can somebody please put my words in a better shape and ordered steps, 1, 2, 3, ..then I promise this post will be a great tutorial!

thanks very much guys,
Messi
Smilie

messi777

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sm2file

SM2FILE(1)							  ICI executables							SM2FILE(1)

NAME

       sm2file - shared-memory linked list data extraction test program

SYNOPSIS

       sm2file

DESCRIPTION

       sm2file stress-tests shared-memory linked list data extraction by retrieving and deleting all text file lines inserted into a shared-memory
       linked list that is the root object of a PSM partition named "file2sm".

       The operation of sm2file echoes the cyclical operation of file2sm: the EOF lines inserted into the linked list by file2sm punctuate the
       writing of files that are copies of file2sm's original source text file.  The name of each file written by sm2file is file_copy_cycleNbr,
       where cycleNbr is, in effect, the count of EOF lines encountered in the linked list up to the point at which the writing of this file
       began.

       sm2file may catch up with the data ingestion activity of file2sm, in which case it blocks (taking the file2sm test semaphore) until the
       linked list is no longer empty.

EXIT STATUS

       0   sm2file has terminated.

FILES

       No configuration files are needed.

ENVIRONMENT

       No environment variables apply.

DIAGNOSTICS

       can't attach to shared memory
	   Operating system error.  Check errtext, correct problem, and rerun.

       Can't manage shared memory.
	   PSM error.  Check for earlier diagnostics describing the cause of the error; correct problem and rerun.

       Can't create shared memory list.
	   PSM error.  Check for earlier diagnostics describing the cause of the error; correct problem and rerun.

       Can't create semaphore.
	   ION system error.  Check for earlier diagnostics describing the cause of the error; correct problem and rerun.

       Can't open output file
	   Operating system error.  Check errtext, correct problem, and rerun.

       can't write to output file
	   Operating system error.  Check errtext, correct problem, and rerun.

BUGS

       Report bugs to <ion-bugs@korgano.eecs.ohiou.edu>

SEE ALSO

       file2sm(1), smlist(3), psm(3)

perl v5.14.2							    2012-05-25								SM2FILE(1)