Messages in this thread |  | | | Date | Mon, 31 May 1999 22:06:52 -0700 | | From | "H. Peter Anvin" <> | | Subject | Re: How can Emacs get a unique ID per Linux reboot? |
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Richard Gooch wrote: > > H. Peter Anvin writes: > > Followup to: <199906010238.TAA18495@shade.twinsun.com> > > By author: Paul Eggert <eggert@twinsun.com> > > In newsgroup: linux.dev.kernel > > > > > > For most operating systems, BOOTID is the timestamp of the last > > > reboot. For example, if I edit FOO on Solaris 7, Emacs might create a > > > symbolic link from .#FOO to eggert@shade.twinsun.com.18323:924306205, > > > since shade.twinsun.com was last rebooted 924306205 seconds after > > > 1970-01-01 00:00:00 UTC. > > > > > > Unfortunately, RMS and I haven't been able to discover a documented, > > > guaranteed, and fast way to get a unique reboot ID for Linux. > > > > > > > Get the current uptime from /proc/uptime and subtract that from the > > current time. > > Won't that foul up if the system is suspended (system clock is > restored from hwclock on resume)? > And probably also when settimeofday() is called? >
No, and yes, respectively.
-hpa
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