What is the difference between “when the operating system shuts down” and “when the kernel shuts...
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Reading one of Stephen's excellent replies, I was wondering what differences are between When the operating system shuts down. ... and When the kernel shuts down, ... (... I’m considering that the variant which uses an external command to shut down isn’t the kernel) ? Is "the variant which uses an external command to shut down" "when the OS shuts down" or "when the kernel shuts down"? What does "I’m considering that the variant which uses an external command to shut down isn’t the kernel" mean in other words? Does system call reboot() reboot the OS or kernel? Does command reboot reboot the OS but not the kernel? Thanks.
linux kernel shutdown
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