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Re: How to gain control over the system?

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Thank you all for thoughts and viewpoints on what can be wrong in my 
installation of Debian 9. I have looked through places I might expect 
can contain some explanation, but so far I have not been able to exclaim 
an "Ah, that's it!". Here are some of my observations:

* First source of install: Well, I do know I wrote that used the live 
image, but to be honest, for now I am not sure, I do not remember. I had 
downloaded the live image as well as the install image, and most 
probable choice would be the later. But I do not know. Anyway the 
install process itself went without any problems.

* At the install I made it fully new from the bottom. The only directory 
I kept unchanged was my home directory. This is situated on an own 
partition. All the others were reformatted: /, /boot, /usr, /var and 
/tmp. All these are on individual partitions while e.g. /etc is 
contained in the root partition. At earlier installations I have noticed 
that the home directory can contain wrong configuration files, so as a 
test I moved all hidden files i.e. files starting with a dot to a new 
created directory "hidden". This was however after the install. So at a 
subsequent cold start the system had no configuration files there but 
created new ones with default values. This however had no positive 
impact on my problem.

* Configuring sudo? No I have not done that explicitly, not more than 
what the install program did itself. I have looked at /etc/sudoers and 
what I think the important lines are:

     # User privilege specification
     root    ALL=(ALL:ALL) ALL

     # Allow members of group sudo to execute any command
     %sudo   ALL=(ALL:ALL) ALL

     #includedir /etc/sudoers.d

In /etc/sudoers.d there are no more files than README.

There is no /etc/sudo.conf file.

* Regarding access to my user directory: During my search I did in fact 
find some files and directories owned by user root or group root. These 
are changed to be owned by my user id and group id, but this did not 
help. By the way, On this computer I have always had just one user, 
mine, and hence got the user id 1000 and group id 1000. This is the case 
now too.

uid 1000 is a member of the sudo group.

* As I wrote I have always used this method of not setting any password 
to the root account, and this is for quite many years now. My Linux path 
has gone via Ubuntu, well to be honest a couple of years after the 
Microsoft era I ran in Suse, but was not fully satisfied. And when 
Ubuntu and Canonical introduced Unity, I left that ship for Linux Mint 
Debian edition (LMDE) until I took the last(?) step into Debian a couple 
of years ago where the entrance point was jessie. The empty root 
password has always worked fine until now. Possibly Ubuntu has patched 
the sudologin but should LMDE? And jessie? I do not think so.


Hope someone can find something significant in this and give a hint on 
what to do.

Kaj

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How to gain control over the system? Kaj Persson <70147persson@telia.com> - 2017-07-09 00:10 +0200
  Re: How to gain control over the system? Oflameo <oflameo2@gmail.com> - 2017-07-09 00:30 +0200
    Re: How to gain control over the system? Fungi4All <fungilife@protonmail.com> - 2017-07-09 01:00 +0200
      Re: How to gain control over the system? Anders Andersson <pipatron@gmail.com> - 2017-07-09 11:30 +0200
        Re: How to gain control over the system? Dejan Jocic <jodejka@gmail.com> - 2017-07-09 12:00 +0200
  Re: How to gain control over the system? davidson@freevolt.org - 2017-07-09 01:30 +0200
    Re: How to gain control over the system? Fungi4All <fungilife@protonmail.com> - 2017-07-09 12:10 +0200
      Re: How to gain control over the system? Richard Owlett <rowlett@cloud85.net> - 2017-07-09 13:50 +0200
  Re: How to gain control over the system? Kaj Persson <70147persson@telia.com> - 2017-07-09 15:10 +0200
    Re: How to gain control over the system? [a security-side-note] Eike Lantzsch <zp6cge@gmx.net> - 2017-07-09 16:00 +0200
      Re: How to gain control over the system? [a security-side-note] Dejan Jocic <jodejka@gmail.com> - 2017-07-09 16:20 +0200
    Re: How to gain control over the system? Fungi4All <fungilife@protonmail.com> - 2017-07-09 19:00 +0200
      Re: How to gain control over the system? Kaj Persson <70147persson@telia.com> - 2017-07-09 19:10 +0200
        Re: How to gain control over the system? Kaj Persson <70147persson@telia.com> - 2017-07-09 23:40 +0200
    Re: How to gain control over the system? Felix Miata <mrmazda@earthlink.net> - 2017-07-10 01:40 +0200
      Re: How to gain control over the system? Kaj Persson <70147persson@telia.com> - 2017-07-11 22:40 +0200
        Re: How to gain control over the system? David Wright <deblis@lionunicorn.co.uk> - 2017-07-11 23:00 +0200
          Re: How to gain control over the system? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-07-11 23:10 +0200
        Re: How to gain control over the system? Felix Miata <mrmazda@earthlink.net> - 2017-07-12 03:50 +0200
          Re: How to gain control over the system? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-07-12 14:30 +0200
          Re: How to gain control over the system? Kaj Persson <kape_fin@algonet.se> - 2017-07-13 12:30 +0200
            Re: How to gain control over the system? <tomas@tuxteam.de> - 2017-07-13 13:20 +0200
              Re: How to gain control over the system? Fungi4All <fungilife@protonmail.com> - 2017-07-13 14:20 +0200
                Re: How to gain control over the system? <tomas@tuxteam.de> - 2017-07-13 15:20 +0200
              Re: How to gain control over the system? tomas@tuxteam.de - 2017-07-13 15:20 +0200
                Re: How to gain control over the system? David Wright <deblis@lionunicorn.co.uk> - 2017-07-13 16:30 +0200
  Re: How to gain control over the system? Jimmy Johnson <field.engineer@gmail.com> - 2017-07-09 22:30 +0200
    Re: How to gain control over the system? Kaj Persson <kape_fin@algonet.se> - 2017-07-10 00:40 +0200
      Re: How to gain control over the system? Jimmy Johnson <field.engineer@gmail.com> - 2017-07-10 00:50 +0200
      Re: How to gain control over the system? Joel Rees <joel.rees@gmail.com> - 2017-07-10 03:10 +0200
      Re: How to gain control over the system? Dejan Jocic <jodejka@gmail.com> - 2017-07-10 10:00 +0200
      Re: How to gain control over the system? RavenLX <ravenlx@sitesplace.net> - 2017-07-12 14:40 +0200
        Re: How to gain control over the system? <tomas@tuxteam.de> - 2017-07-12 15:30 +0200
          Re: How to gain control over the system? RavenLX <ravenlx@sitesplace.net> - 2017-07-16 15:50 +0200
            Re: How to gain control over the system? <tomas@tuxteam.de> - 2017-07-16 16:50 +0200

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