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Isn't it weird that we put credentials in the environment?
(lemmy.sdf.org)
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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The classic Unix user and permission system provides a solution for this.
Create a user for the app you are worried about. Make the environment variables available to that user only.
Other apps can’t read the secrets, and if the app itself gets exploited, it has access to the secrets in any case.