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Canonical lifts lid on more Ubuntu Core Desktop details
(www.theregister.com)
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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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is pretty vague. Do you mean locked down, with features like SafetyNet which locks people in to Google Services? Or do you mean locked down in the sense that installing packages doesn't just directly change the files in / ?
Systems like rpm-ostree still allow modifications to the OS, it just requires other steps. OpenSUSE MicroOS even allows for arbitrary modifications to the root fs through transactional-update (it even allows for dropping in to a transactional-update shell, so it's not necessary to prefix each command with transactional-update).
Especially OpenSUSE MicroOS feels more like OpenSUSE Tumbleweed, compared to Fedora rpm-ostree's limitations compared to Fedora dnf.