On Friday 05 July 2019 08:59:41 Greg Wooledge wrote: > On Fri, Jul 05, 2019 at 04:33:42AM -0400, Gene Heskett wrote: > > Here is your Clarification: I used apt to purge avahi-daemon which > > took nsswitch with it, > > Let's test this assertion. > > > wooledg:~$ ls -l /etc/nss* > -rw-r--r-- 1 root root 545 Apr 1 08:58 /etc/nsswitch.conf > wooledg:~$ sudo cp /etc/nsswitch.conf /etc/nsswitch.conf.GW-backup > [sudo] password for wooledg: > wooledg:~$ sudo apt purge avahi-daemon > Reading package lists... Done > Building dependency tree > Reading state information... Done > The following packages will be REMOVED: > avahi-daemon* libnss-mdns* > 0 upgraded, 0 newly installed, 2 to remove and 1 not upgraded. > After this operation, 407 kB disk space will be freed. > Do you want to continue? [Y/n] > (Reading database ... 107764 files and directories currently > installed.) Removing libnss-mdns:amd64 (0.14.1-1) ... > Removing avahi-daemon (0.7-4+b1) ... > Created symlink /run/systemd/system/avahi-daemon.service → /dev/null. > Removed /run/systemd/system/avahi-daemon.service. > Processing triggers for man-db (2.8.5-2) ... > Processing triggers for dbus (1.12.16-1) ... > Processing triggers for libc-bin (2.28-10) ... > (Reading database ... 107717 files and directories currently > installed.) Purging configuration files for avahi-daemon (0.7-4+b1) > ... > rmdir: failed to remove '/var/run/avahi-daemon': Directory not empty > Purging configuration files for libnss-mdns:amd64 (0.14.1-1) ... > libnss-mdns.postrm: Checking NSS setup... > libnss-mdns.postrm: Removing mdns from NSS setup > Processing triggers for dbus (1.12.16-1) ... > Processing triggers for systemd (241-5) ... > wooledg:~$ ls -l /etc/nss* > -rw-r--r-- 1 root root 513 Jul 5 08:51 /etc/nsswitch.conf > -rw-r--r-- 1 root root 545 Jul 5 08:51 /etc/nsswitch.conf.GW-backup > wooledg:~$ diff -u /etc/nsswitch.conf.GW-backup /etc/nsswitch.conf > --- /etc/nsswitch.conf.GW-backup 2019-07-05 08:51:38.640595350 > -0400 +++ /etc/nsswitch.conf 2019-07-05 08:51:52.812542805 -0400 > @@ -9,7 +9,7 @@ > shadow: compat > gshadow: files > > -hosts: files mdns4_minimal [NOTFOUND=return] dns > +hosts: files dns > networks: files > > protocols: db files > > > So... purging avahi-daemon actually does *touch* the nsswitch.conf > file (see the "libnss-mdns.postrm: Removing mdns from NSS setup" > message). But it doesn't completely *remove* the file. That would > be madness. > > If your multiple-times-customized Raspbian system's avahi-daemon > package or libnss-mdns package completely *removes* the nsswitch.conf > file, you should either fix that (if it's one of your customizations > that did it), or file a bug report against Raspbian (if it's one of > theirs).
So I'll put it back, edited as shown above. One less head-scratcher. Thanks. > > In any case, the behavior you describe is not what Debian (or any sane > operating system) does. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene>
