this post was submitted on 12 Dec 2024
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Linux
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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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Yes, it only reboots into the selected entry ONCE without changing the default one.
does it use efibootmgr? if so,how is it handled on BIOS systems?
No. It just reads and parses the contents of /boot/grub/grub.cfg and updates /etc/default/grub
but then how does it override the default only once?
It uses grub-reboot for that function.