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Full Discussion: How are environment variables defined in a Gnome terminal session?
Top Forums UNIX for Beginners Questions & Answers How are environment variables defined in a Gnome terminal session? Post 303009877 by Don Cragun on Thursday 21st of December 2017 12:32:16 PM
Old 12-21-2017
In a macOS version 10.13.2 terminal window, if I type in the command:
Code:
who am i

it will reply with something like:
Code:
dwc      ttys006  Dec 17 12:52

If I then type in the command:
Code:
ps -t ttys006

it gives me something like:
Code:
  PID TTY           TIME CMD
  849 ttys006    0:00.02 login -pf dwc /bin/ksh
  850 ttys006    0:01.72 -ksh
81761 ttys006    0:00.00 ps -t ttys006

I would expect that running similar commands in your Gnome terminal window will produce similar results, but the first field in the output from who am i will be your login ID instead of mine and the 2nd field will be your terminal device ID instead of ttys006. If you then issue that ps command with your terminal device ID as the -t option option-argument, I would expect to see similar output on your screen with the -ksh in my output replaced by a -bash in your output. The login command shown in my output is what macOS uses to start a login session. There might or might not be a similar line in your ps output depending on how Centos starts a login session.
 

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LEARN ABOUT SUSE

gnome-session

GNOME-SESSION(1)					      General Commands Manual						  GNOME-SESSION(1)

NAME

       gnome-session - Starts up the GNOME desktop environment

SYNOPSIS

       gnome-session [--autostart=DIR] [--default-session-key=KEY] [--failsafe|-f] [--debug]

DESCRIPTION

       The  gnome-session  program starts up the GNOME desktop environment.  This command is typically executed by your login manager (either gdm,
       xdm, or from your X startup scripts).  It will load either your saved session, or it will provide a default session for the user as defined
       by the system administrator (or the default GNOME installation on your system).

       The  default  session  is defined in the GConf keys under /desktop/gnome/session.  When saving a session, gnome-session saves the currently
       running applications in the $XDG_CONFIG_HOME/gnome-session/saved-session directory.

       gnome-session is an X11R6 session manager.  It can manage GNOME applications as well as any X11R6 SM compliant.

OPTIONS

       The following options are supported:

       --autostart=DIR
	      Start all applications defined in DIR, instead of starting the applications defined  in  /desktop/gnome/session/default_session,	or
	      via the --default-session-key option. Multiple --autostart options can be passed.

       --default-session-key=KEY
	      Sets  the  GConf key from which applications running a default session should be read to KEY. If not specificed, /desktop/gnome/ses-
	      sion/default_session will be used.

       --failsafe
	      gnome-session will run in fail-safe mode. User-specified applications will not be started.

       --debug
	      Enable debugging code.

ENVIRONMENT

       gnome-session accepts all of the standard environment variables used by gnome programs, other than the  SESSION_MANAGER	environment  vari-
       able.  gnome-session also sets several environment variables for the use of its child processes.

       SESSION_MANAGER

	      This variable is used by session-manager aware clients to contact gnome-session.

       DISPLAY

	      This variable is set to the X display being used by gnome-session. Note that if the --display option is used this might be different
	      from the setting of the environment variable when gnome-session is invoked.

SEE ALSO

       gnome-session-properties(1) gnome-session-save(1) gnome-wm(1)

BUGS

       If you find bugs in the gnome-session program, please report these on http://bugzilla.gnome.org.

								       GNOME							  GNOME-SESSION(1)
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