On 06/03/18 05:43, Patrick O'Callaghan wrote: > As has been said, this is an ongoing debate. Linux follows Unix in not > forcing you to reboot except when switching to a new kernel (though > rebooting if glibc changes is strongly encouraged). Running apps will > continue to use old libraries even when new ones are installed and an > old library will hang around until the last reference to it disappears, > while new processes will use the new version. Unix (and Linux) has > always worked like that. This is what some are calling 'live updating' > or 'online updating'. In an earlier time we just called it 'updating'. > The (relatively new) tracer program is designed to tell you when a > process is using libraries whose packages have been updated since the > process started (and hence that the library itself may now be > obsolete), so you can decide if you want to restart them when > convenient. In some cases it recommends that you reboot the system, but > it's up to you when you do it. What you've said is not 100% accurate. While the majority of time you can delay rebooting and/or logout/login I have observed times that delaying too long after many varied updates can and will result in an unstable system with somethings not working quite right for no apparent reason. A reboot fixes it. So, it is nice to think that one can run forever without rebooting after updates it isn't always the case. Yes, YMMV. But I know I've been bitten by waiting "too" long to reboot after multiple updates. Oh, and let's not forget the times (twice in recent memory) where updates to KDE Plasma resulted in not being able to logout or even reboot from the menus. In that case one needed to know about "init 6". :-) :-) -- Conjecture is just a conclusion based on incomplete information. It isn't a fact.
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