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To unset an environment variable in Mac's bash shell, you can use the unset command. This command removes the specified variable from the environment.
Example
unset MY_VARIABLEThis command will remove MY_VARIABLE from the environment1.
Important Considerations
Temporary Unset: The unset command only removes the variable for the current session. If you open a new terminal window, the variable will still be set if it is defined in your shell configuration files like .bashrc or .bash_profile2.
Permanent Unset: To permanently remove an environment variable, you need to delete or comment out the line that sets it in your shell configuration files. For example, if MY_VARIABLE is set in .bashrc, open the file with a text editor and remove or comment out the line:
# export MY_VARIABLE="value"After making changes, you need to source the file to apply the changes:
source ~/.bashrc linux - How do I delete an exported environment variable ... - Stack ...
Jan 25, 2022 · use the setx command to delete an environment variable. setx GNUPLOT_DRIVER_DIR ""
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shell - How do I unset a variable at the command line? - Unix
Jun 30, 2016 · To unset a bound variable in bash use unset VARIABLE (unset ALL_PROXY in your case). This command actually deletes the variable. You can also set the value of a …
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how to view, edit, unset and delete an environment variable in linux
Delete (or Unset) an Environment Variable Sometimes you want to completely remove the variable from the environment. In order to remove or unset a variable from the environment, …
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Oct 6, 2023 · In this article, we will see the different methods that can be used to remove exported environment variables in the shell. Local vs. user vs. system-wide environment variables. …
Bash remove environment variables command - nixCraft
Apr 5, 2024 · Learn how to use the unset bash command to remove environment variables in Linux, macOS, *BSD, and Unix-like terminals.
- Occupation: IT Consultant And Blogger
- Difficulty level: Easy
- Category: Linux shell scripting
- Requirements: Linux or Unixterminal
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Oct 19, 2019 · To unset an environment variable, use the unset command with the following syntax. Given the examples cited above, you would run those commands. Alternatively, you can unset environment variables by using the …
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Jun 23, 2024 · Linux users sometimes need to remove environment variables that are no longer needed or were set incorrectly. These variables can affect system behavior and application performance, so knowing how to unset them is …
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Jan 7, 2022 · It is very simple to delete environment variables. You need to just use the unset command with the variable name to delete it. This command will remove the variable permanently. The permanent environment variables are …
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Mar 18, 2024 · In this tutorial, we discussed various examples to clear the value of an exported environment variable. We can use these commands in our shell scripts to make them more robust. Learn a few commands for deleting or …
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Mar 13, 2025 · There are several methods to remove or unset environment variables in Linux, each with its own use case and considerations. Here, we’ll explore these methods in detail. …
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