# Creating Default Environment Variables for Your Linux Users
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You can create environment variables on a Linux Image Builder instance. Creating environment variables makes them available on streaming instances created from that image. 

**Note**  
On Linux fleet instances, environment variables set using the Image Assistant (GUI) tool and the default system environment variables are exported through the /etc/profile.d/appstream\$1system\$1vars.sh script. To access these environment variables, you must explicitly source the /etc/profile.d/appstream\$1system\$1vars.sh script in your applications.

**To create environment variables for your users**

1. If the folder `/etc/profile` doesn’t exist, run the following command to create it:

   **[ImageBuilderAdmin]\$1 sudo mkdir -p /etc/profile.d** 

1. To create a new shell script file (for example, my-environment.sh) in this folder, run the following command:

   **[ImageBuilderAdmin]\$1 vim my-environment.sh**

1. On first line of the script file, add the following content: 

   **\$1\$1/bin/sh **

1. For each subsequent line, add an **export** command to set the environment variables for your image. The following example adds `$HOME/bin` to the `PATH` variable: 

   **export PATH=”\$1HOME/bin:\$1PATH”**

1. Press the **Esc** key to return to command mode in vim, then run the following command to save your script and exit vim: 

   **:x**

1. Run the following command to allow the script to run as a program: 

   **[ImageBuilderAdmin]\$1 chmod \$1x my-environment.sh**