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Re: Assorted arm-buster problems - network configuration

On Friday 05 July 2019 08:41:47 Greg Wooledge wrote:

> On Fri, Jul 05, 2019 at 06:35:53AM -0400, Gene Heskett wrote:
> > yup, and if the repos were open...  They are not as I've previously
> > posted. I can report that apt --purge does not, I still see
> > an /etc/nsswitch.conf, even though ts been purged.
> ... what.
> Gene, /etc/nsswitch.conf is NOT part of any Debian package.  It's part
> of the core installation.  It is absolutely fundamental to the
> operation of basically every single piece of the operating system
> above the boot loader, the kernel, the ld.so shared library loader,
> and libc.

IOW, the image I have in my pocket probably don't work until I locate a 
copy and put it back in. But just for grins, check the buster its 
running:  yes, its still there and I think intact:
gene@shop:~$ cat /etc/nsswitch.conf
# /etc/nsswitch.conf
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc-reference' and `info' packages installed, 
# `info libc "Name Service Switch"' for information about this file.

passwd:         compat
group:          compat
shadow:         compat

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

But that begs another question Greg.  If it hasn't anything to do with 
avahi-daemon, whyinhell did purging avahi-daemon take the libnsswitch 
package with it?

> If you remove /etc/nsswitch.conf, you won't be able to look up user
> names, or service port names, or host names, or basically *any* kind
> of names of anything at all.  (Or, at best, you'll get some sort of
> default behavior compiled into the C library routines, if any.)
> wooledg:~$ dpkg -S /etc/nsswitch.conf
> dpkg-query: no path found matching pattern /etc/nsswitch.conf
> Since nsswitch.conf isn't part of a package, there is absolutely no
> reason you should think that purging ANY package would remove it.  And
> there is absolutely no reason you should *want* to remove it.

The only reason I removed it, was to complete the libnsswitch removal 
that removing avahi-daemon took out. Somehow I am missing an actual 
dependency of one on the other.  Call me puzzled. 

Thanks Greg.

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>

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