Xwindow 시작 세션 변경하기

< startx and .xinitrc > If you use the startx command for starting up the X Window System, you'll need to edit a file called .xinitrc that is located in your home directory. If the file already is there, just open it with your favorite text editor. If you don't have such a file in your home directory, create a new file with that name. Note the dot in the file name - it shows you that the file is a hidden file and doesn't show when you do a normal directory listing. If you already have a .xinitrc file in your home directory, it may be a huge scary-looking text file with a lot of text that makes just as much sense as a file produced with a random number generator and encrypted after writing. If you want to make a backup of this file, rename it to something like .xinitrc.backup or whatever you wish: mv .xinitrc .xinitrc.backup Now you can use your text editor for creating a new, blank .xinitrc file. Although the file may be a complicated multi-line geeky script, it can be very simple, too. In its simplest it just contains a single line with the name of your new window manager. So, add a line like this to your file: exec windowmanager where windowmanager is the command that starts the window manager you want to be your default. For example, to make Window Maker your default window manager, you'd have a line like this: exec wmaker The commands for starting some popular window managers and desktop environments are: KDE = startkde Gnome = gnome-session Blackbox = blackbox FVWM = fvwm (or, for FVWM2 it's fvwm2, surprise) Window Maker = wmaker IceWM = icewm After editing the .xinitrc file, save your changes. The next time you do a startx, the new window manager will be your default. [출처 : http://www.tuxfiles.org/linuxhelp/changeman.html]

startx 라고 하면 리눅스에서 Xwindow가 구동이 되는데
어떠한 원리로 KDE나 Gnome 혹은 그 외의 윈도우 매니저가 선택이 되는지 궁금해서 찾아보게 되었지만
실제로 얻어낸 정보는 KDE 실행 파일이름(혹은 스크립트) Gnome 실행 파일이름 뿐이다..

]$ startx xauth:  creating new authority file /home/morpheuz/.serverauth.3128 X.Org X Server 1.4.99.901 (1.5.0 RC 1) Release Date: 5 September 2007 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.18-53.1.14.el5xen i686 Current Operating System: Linux localhost.localdomain 2.6.25-14.fc9.i686 #1 SMP Thu May 1 06:28:41 EDT 2008 i686 Build Date: 06 May 2008  03:35:07PM Build ID: xorg-x11-server 1.4.99.901-29.20080415.fc9         Before reporting problems, check http://wiki.x.org         to make sure that you have the latest version. Module Loader present Markers: (--) probed, (**) from config file, (==) default setting,         (++) from command line, (!!) notice, (II) informational,         (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/Xorg.0.log", Time: Mon Apr 13 00:10:44 2009 (==) Using config file: "/etc/X11/xorg.conf" (EE) Failed to initialize GLX extension (NVIDIA X driver not found) expected keysym, got XF86Info: line 914 of inet expected keysym, got XF86Info: line 914 of inet Started none SESSION_MANAGER=local/unix:@/tmp/.ICE-unix/3316,unix/unix:/tmp/.ICE-unix/3316 ** Message: another SSH agent is running at: /tmp/ssh-cwskYs3316/agent.3316 Window manager warning: Failed to read saved session file /home/morpheuz/.metacity/sessions/default1.ms: Failed to open file '/home/morpheuz/.metacity/sessions/default1.ms': No such file or directory Failure: Module initalization failed ** (nm-applet:3382): WARNING **: <WARN>  applet_dbus_manager_start_service(): Could not acquire the NetworkManagerUserSettings service.   Message: 'Connection ":1.102" is not allowed to own the service "org.freedesktop.NetworkManagerUserSettings" due to security policies in the configuration file' (nm-applet:3382): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed system-config-printer-applet: failed to start NewPrinterNotification service ** (nautilus:3343): WARNING **: Unable to add monitor: Not supported

도대체.. 어떤 파일이나 어떠한 환경변수를 사용하여 그것을 설정하는지 알 수가 없다.