this post was submitted on 23 Feb 2024
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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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I think you can mount an ISO image under your running system and make changes. I found a couple of guides that might be helpful:
How to Mount an ISO File on Linux
Edit and repack .iso bootable image
I haven't done this before, but I think you can
chroot
into the mount directory, and run package manager commands in the mounted image to install another package.Or I have an alternative suggestion that might or might not be easier. I've been hearing a lot about immutable/atomic distros, and people designing their own images. You could make your own ublue image, for example, with whatever you want on it.
A promising looking starting point is github:ublue-os/startingpoint. Ignore the "Installation" instructions, and follow the "ISO" instructions instead.
Or I saw recently an announcement of a new way to build atomic images that is supposed to be easier than ever, BlueBuild