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Trying to figure out how the environment variables are being set

 
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Old 06-02-2017
Trying to figure out how the environment variables are being set
I just started a new job and I've been tasked with cleaning up the files that set up all the environment variables. The system works as is. What happens is:
1. You log in to the server.
2. You call a file that sets a bunch of environment variables and that displays a list of all the databases you can connect to.
3. You select the database you want to connect to by calling a file that contains all the environment variables for that specific database (i.e. . filename).

This is all straight forward for some databases, but with others the file name starts with a period. Even though it starts with a period, executing the file with the . filename syntax seems to work fine.

With one database, there is no file under the home directory named after the database, and yet when you execute . filename for that database, you connect just fine.

Anyone have any ideas what is going on? I haven't been able to get any answers at my new job because everyone is so busy. Thank you in advance for any insight you can give.
 
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LEARN ABOUT DEBIAN

starting

starting(7)						 Miscellaneous Information Manual					       starting(7)

NAME

       starting - event signalling that a job is starting

SYNOPSIS

       starting JOB=JOB INSTANCE=INSTANCE [ENV]...

DESCRIPTION

       The  starting  event is generated by the Upstart init(8) daemon when a new instance of a job begins starting.  The JOB environment variable
       contains the job name, and the INSTANCE environment variable contains the instance name which will be empty for single-instance jobs.

       init(8) will wait for all services started by this event to be running, all tasks started by this event	to  have  finished  and  all  jobs
       stopped by this event to be stopped before allowing the job to continue starting.

       This allows jobs to effectively insert themselves as dependencies of other jobs.  The event is typically combined with the stopped(7) event
       by services.

       Job configuration files may use the export stanza to export environment variables from their own environment into the starting event.   See
       init(5) for more details.

EXAMPLE

       A service that wishes to be running whenever another service would be running, started before and stopped after it, might use:

	      start on starting apache
	      stop on stopped apache

       A task that must be run before another task or service is started might use:

	      start on starting postgresql

SEE ALSO

       started(7) stopping(7) stopped(7) init(5)

Upstart 							    2009-07-09							       starting(7)