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About user and password on Debian 10

Started by	frantal@libero.it
First post	2021-09-30 19:30 +0200
Last post	2021-09-30 20:30 +0200
Articles	2 — 2 participants

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  About user and password on Debian 10 frantal@libero.it - 2021-09-30 19:30 +0200
    Re: About user and password on Debian 10 David Wright <deblis@lionunicorn.co.uk> - 2021-09-30 20:30 +0200

#240670 — About user and password on Debian 10

From	frantal@libero.it
Date	2021-09-30 19:30 +0200
Subject	About user and password on Debian 10
Message-ID	<D382B-2jh-1@gated-at.bofh.it>

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Try (as root, at CLI) "passwd <username>"


I did. It permits to fill only the old password and then it says your password is changed. But when I reboot I have the same as I told
I tried (on terminal of root desktop to write:
pupmar@debian:~$ cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
_apt:x:100:65534::/nonexistent:/usr/sbin/nologin
systemd-timesync:x:101:102:systemd Time Synchronization,,,:/run/systemd:/usr/sbin/nologin
systemd-network:x:102:103:systemd Network Management,,,:/run/systemd:/usr/sbin/nologin
systemd-resolve:x:103:104:systemd Resolver,,,:/run/systemd:/usr/sbin/nologin
messagebus:x:104:110::/nonexistent:/usr/sbin/nologin
dnsmasq:x:105:65534:dnsmasq,,,:/var/lib/misc:/usr/sbin/nologin
pulse:x:106:113:PulseAudio daemon,,,:/var/run/pulse:/usr/sbin/nologin
avahi:x:107:115:Avahi mDNS daemon,,,:/var/run/avahi-daemon:/usr/sbin/nologin
lightdm:x:108:116:Light Display Manager:/var/lib/lightdm:/bin/false
pupmar:x:1000:1000:pupmar,,,:/home/pupmar:/bin/bash
systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
colord:x:109:119:colord colour management daemon,,,:/var/lib/colord:/usr/sbin/nologin

Note: pupmar is username.
Francesco

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#240679

From	David Wright <deblis@lionunicorn.co.uk>
Date	2021-09-30 20:30 +0200
Message-ID	<D38YG-2Rh-7@gated-at.bofh.it>
In reply to	#240670

On Thu 30 Sep 2021 at 19:25:09 (+0200), frantal@libero.it wrote:
> Try (as root, at CLI) "passwd <username>"
> 
> 
> I did. It permits to fill only the old password and then it says your password is changed. But when I reboot I have the same as I told

You're misunderstanding something. As root, you don't need to know the
old password to set a new password:

# passwd flash
New password: 
Retype new password: 
passwd: password updated successfully
# 

# passwd 
New password: 
Retype new password: 
passwd: password updated successfully
# 

The passwd man page does have a caveat:  "Users may not be able to
change their password on a system if NIS is enabled and they are
not logged into the NIS server."

BTW /etc/passwd no longer contains any passwords as it's world-readable.

Cheers,
David.

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About user and password on Debian 10

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#240670 — About user and password on Debian 10

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