How to find the source definition of an environment variable?





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There is a global environment variable that was declared somewhere in my OS. Let's say is called FOOBAR



When I echo it, I receive a proper output:



$ echo $FOOBAR
localhost%6200


I want to know where is defined because I need to update its value for certain process. Currently, I am declaring this value manually in a script before executing my processes, just to override it:



#!/bin/sh
# other comands...
export FOOBAR=localhost%16200
# rest of script


Still, I'm curious about why I cannot find the definition of this variable.



I have gone through several posts like these:





  • How to permanently set environmental variables (trying to see other places where to find the environment variable)

  • How do I find all files containing specific text on Linux?

  • How to determine where an environment variable came from?


I've looked into ~/.bashrc, /etc/profile, scripts in /etc/profile.d/, I've executed several commands and tried different variations, like searching in all /etc and /home/MyUser and still no luck.



The only hint I got is this output from searching through /home/MyUser:



$ find /home/MyUser -type f -exec grep -F FOOBAR {} +
... lines ...
/home/MyUser/.xsession-errors:dbus-update-activation-environment: setting FOOBAR=localhost%6200


Then I tried looking at the variables defined for dbus by using this command



$ systemctl --user show-environment
... among other variables ...
FOOBAR=localhost%6200


There I see it!



How can I track this environment variable definition?










share|improve this question























  • Why are you hiding the name of the variable? The name may not be important to you, but someone gave it a name for a reason, use it. Is it an X variable? if so why are you wanting to change it?

    – j-money
    Feb 13 at 8:24













  • @j-money is a variable from a closed source program we should use in the company for one of our clients.

    – Luiggi Mendoza
    Feb 13 at 15:19











  • Ask the creators of the program then,

    – j-money
    Feb 13 at 15:40


















0















There is a global environment variable that was declared somewhere in my OS. Let's say is called FOOBAR



When I echo it, I receive a proper output:



$ echo $FOOBAR
localhost%6200


I want to know where is defined because I need to update its value for certain process. Currently, I am declaring this value manually in a script before executing my processes, just to override it:



#!/bin/sh
# other comands...
export FOOBAR=localhost%16200
# rest of script


Still, I'm curious about why I cannot find the definition of this variable.



I have gone through several posts like these:





  • How to permanently set environmental variables (trying to see other places where to find the environment variable)

  • How do I find all files containing specific text on Linux?

  • How to determine where an environment variable came from?


I've looked into ~/.bashrc, /etc/profile, scripts in /etc/profile.d/, I've executed several commands and tried different variations, like searching in all /etc and /home/MyUser and still no luck.



The only hint I got is this output from searching through /home/MyUser:



$ find /home/MyUser -type f -exec grep -F FOOBAR {} +
... lines ...
/home/MyUser/.xsession-errors:dbus-update-activation-environment: setting FOOBAR=localhost%6200


Then I tried looking at the variables defined for dbus by using this command



$ systemctl --user show-environment
... among other variables ...
FOOBAR=localhost%6200


There I see it!



How can I track this environment variable definition?










share|improve this question























  • Why are you hiding the name of the variable? The name may not be important to you, but someone gave it a name for a reason, use it. Is it an X variable? if so why are you wanting to change it?

    – j-money
    Feb 13 at 8:24













  • @j-money is a variable from a closed source program we should use in the company for one of our clients.

    – Luiggi Mendoza
    Feb 13 at 15:19











  • Ask the creators of the program then,

    – j-money
    Feb 13 at 15:40














0












0








0








There is a global environment variable that was declared somewhere in my OS. Let's say is called FOOBAR



When I echo it, I receive a proper output:



$ echo $FOOBAR
localhost%6200


I want to know where is defined because I need to update its value for certain process. Currently, I am declaring this value manually in a script before executing my processes, just to override it:



#!/bin/sh
# other comands...
export FOOBAR=localhost%16200
# rest of script


Still, I'm curious about why I cannot find the definition of this variable.



I have gone through several posts like these:





  • How to permanently set environmental variables (trying to see other places where to find the environment variable)

  • How do I find all files containing specific text on Linux?

  • How to determine where an environment variable came from?


I've looked into ~/.bashrc, /etc/profile, scripts in /etc/profile.d/, I've executed several commands and tried different variations, like searching in all /etc and /home/MyUser and still no luck.



The only hint I got is this output from searching through /home/MyUser:



$ find /home/MyUser -type f -exec grep -F FOOBAR {} +
... lines ...
/home/MyUser/.xsession-errors:dbus-update-activation-environment: setting FOOBAR=localhost%6200


Then I tried looking at the variables defined for dbus by using this command



$ systemctl --user show-environment
... among other variables ...
FOOBAR=localhost%6200


There I see it!



How can I track this environment variable definition?










share|improve this question














There is a global environment variable that was declared somewhere in my OS. Let's say is called FOOBAR



When I echo it, I receive a proper output:



$ echo $FOOBAR
localhost%6200


I want to know where is defined because I need to update its value for certain process. Currently, I am declaring this value manually in a script before executing my processes, just to override it:



#!/bin/sh
# other comands...
export FOOBAR=localhost%16200
# rest of script


Still, I'm curious about why I cannot find the definition of this variable.



I have gone through several posts like these:





  • How to permanently set environmental variables (trying to see other places where to find the environment variable)

  • How do I find all files containing specific text on Linux?

  • How to determine where an environment variable came from?


I've looked into ~/.bashrc, /etc/profile, scripts in /etc/profile.d/, I've executed several commands and tried different variations, like searching in all /etc and /home/MyUser and still no luck.



The only hint I got is this output from searching through /home/MyUser:



$ find /home/MyUser -type f -exec grep -F FOOBAR {} +
... lines ...
/home/MyUser/.xsession-errors:dbus-update-activation-environment: setting FOOBAR=localhost%6200


Then I tried looking at the variables defined for dbus by using this command



$ systemctl --user show-environment
... among other variables ...
FOOBAR=localhost%6200


There I see it!



How can I track this environment variable definition?







command-line bash environment-variables






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Feb 13 at 6:48









Luiggi MendozaLuiggi Mendoza

1012




1012













  • Why are you hiding the name of the variable? The name may not be important to you, but someone gave it a name for a reason, use it. Is it an X variable? if so why are you wanting to change it?

    – j-money
    Feb 13 at 8:24













  • @j-money is a variable from a closed source program we should use in the company for one of our clients.

    – Luiggi Mendoza
    Feb 13 at 15:19











  • Ask the creators of the program then,

    – j-money
    Feb 13 at 15:40



















  • Why are you hiding the name of the variable? The name may not be important to you, but someone gave it a name for a reason, use it. Is it an X variable? if so why are you wanting to change it?

    – j-money
    Feb 13 at 8:24













  • @j-money is a variable from a closed source program we should use in the company for one of our clients.

    – Luiggi Mendoza
    Feb 13 at 15:19











  • Ask the creators of the program then,

    – j-money
    Feb 13 at 15:40

















Why are you hiding the name of the variable? The name may not be important to you, but someone gave it a name for a reason, use it. Is it an X variable? if so why are you wanting to change it?

– j-money
Feb 13 at 8:24







Why are you hiding the name of the variable? The name may not be important to you, but someone gave it a name for a reason, use it. Is it an X variable? if so why are you wanting to change it?

– j-money
Feb 13 at 8:24















@j-money is a variable from a closed source program we should use in the company for one of our clients.

– Luiggi Mendoza
Feb 13 at 15:19





@j-money is a variable from a closed source program we should use in the company for one of our clients.

– Luiggi Mendoza
Feb 13 at 15:19













Ask the creators of the program then,

– j-money
Feb 13 at 15:40





Ask the creators of the program then,

– j-money
Feb 13 at 15:40










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