I use the following little script. If it produces output, then a reboot is desirable.
#!/bin/bash -p set -x PATH=/usr/bin:/bin lsof +c0 -w | grep ' DEL *REG *[^0 ]' | egrep -v \ '(/var/lib/gdm3|/usr/share/mime|/home/[^/]*)/(.cache|.config|.local)' What it does is look for library (and other) files that are in use but have been removed from the filesystem. The "egrep -v" filters out some files that various utilities create, open, then delete without closing so that if the utility ends catastrophically without cleaning up, they don't hang around. It's not perfect, but it does help. Rick On Sun, May 2, 2021, at 9:16 PM, Kenneth Parker wrote: > > > On Sun, May 2, 2021, 9:42 PM riveravaldez <riveravaldezm...@gmail.com> wrote: >> Hi, sorry if this is not the place to ask (and in that case please >> point me in the proper direction). >> >> I'm trying to distinguish when a system reboot is an absolute need >> and when it is absolutely safe to keep the system running/working >> after a `sudo apt-get update && sudo apt-get dist-upgrade`, once >> I have already performed a complete restart of all needed services >> through `sudo needrestart' options in Debian testing. > > In general, if the Kernel is updated, plan to Restart. Usually, dist-upgrade > is required, when Version Numbers change, requiring addition of new packages. > The Linux Kernel is a common (but not the only) reason for this. > > Also beware, because Debian occasionally will update the Kernel without > updating the Version Number. So it is possible that a Restart is required, > without a dist-upgrade. > > Good luck! > > Kenneth Parker > >> >> So, in a situation like this: >> >> $ sudo apt-get dist-upgrade >> Reading package list ... Done >> Creating dependency tree ... Done >> Reading status information ... Done >> Calculating the update ... Done >> The following packages have been withheld: >> imagemagick inkscape libc-bin libc6 libc6-dbg libcrypt1 >> libpoppler-glib8 local openssh-client openssh-server >> openssh-sftp-server ssh >> 0 updated, 0 new will be installed, 0 to remove, and 12 not updated. >> >> $ sudo needrestart >> Scanning processes... >> Scanning processor microcode... >> Scanning linux images... >> >> Running kernel seems to be up-to-date. >> >> Failed to check for processor microcode upgrades. >> >> No services need to be restarted. >> >> No containers need to be restarted. >> >> No user sessions are running outdated binaries. >> >> $ sudo checkrestart >> lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs >> Output information may be incomplete. >> Found 6 processes using old versions of upgraded files >> (1 distinct program) >> (0 distinct packages) >> No packages seem to need to be restarted. >> (please read checkrestart(8)) >> >> , would be perfectly safe and right to keep the system running or on >> the contrary should I perform a (warm/cold?) reboot to be safe? >> >> Thanks a lot in advance for any hint or info. >> >> Kind regards. >> >> PS: `apt-get dist-upgrade` output is translated to English..., system is >> in Spanish and I keep not-remembering how to force console output >> to English, sorry... >>
