Home>

If i run $sudo apt update in a Debian 10 terminal, you will get an error.
The following is a message from the terminal.

$sudo apt update
Get: 1 http://security.debian.org/debian-security buster/updates InRelease [65.4 kB]
Get: 4 http://security.debian.org/debian-security stretch/updates InRelease [94.3 kB]
Hit: 8 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu trusty InRelease
Ign: 11 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu focal InRelease
Hit: 9 https://packagecloud.io/slacktechnologies/slack/debian jessie InRelease
Err: 12 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu focal Release
  404 Not Found [IP: 91.189.95.83 80]
Reading package lists ... Done
E: The repository 'http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu focal Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure (8) manpage for repository creation and user configuration details.</Code></pre>
<p>Teach us.</p>
<p>Appendix 1</p>
<p>I deleted the Ubuntu repository and changed the description of /etc/apt/sources.list as follows, but I still get an error.</p>
<pre><code>#
# deb cdrom: [Debian GNU/Linux 10.2.0 _Buster_-Official amd64 NETINST 20191116-09: 56]/buster main
# deb cdrom: [Debian GNU/Linux 10.2.0 _Buster_-Official amd64 NETINST 20191116-09: 56]/buster main
deb http://security.debian.org/debian-security buster/updates main contrib non-free
deb-src http://security.debian.org/debian-security buster/updates main contrib non-free# buster-updates, previously known as 'volatile'
# fingerprint-gui
# Debian GNU/Linux 9.1.0 _Stretch
# deb cdrom: [Debian GNU/Linux 9.1.0 _Stretch_-Official amd64 xfce-CD Binary-1 20170722-11: 29]/stretch main
deb http://security.debian.org/debian-security stretch/updates main contrib non-free
deb-src http://security.debian.org/debian-security stretch/updates main contrib non-free
# stretch-updates, previously known as 'volatile'
# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list (5) manual.

The following are the details of the error.

Get: 1 http://security.debian.org/debian-security buster/updates InRelease [65.4 kB]
Get: 2 http://security.debian.org/debian-security stretch/updates InRelease [94.3 kB]
Ign: 8 http://repo.vivaldi.com/stable/deb stable InRelease
Hit: 9 http://repo.vivaldi.com/stable/deb stable Release
Ign: 10 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu focal InRelease
Err: 14 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu focal Release404 Not Found [IP: 91.189.95.83 80]
Hit: 11 https://packagecloud.io/slacktechnologies/slack/debian jessie InRelease
Reading package lists ... Done
E: The repository 'http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu focal Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure (8) manpage for repository creation and user configuration details.</Code></pre>
<p>Appendix 2<br />
If i open vi /etc/apt/sources.list with root privileges, the following error will be displayed. Thanks for your patience.</p>
<pre><code data-language = "Bash">E325: ATTENTION
Found a swap file by the name "/etc/apt/.sources.list.swp"
          owned by: root dated: Sun Dec 1 04:46:38 2019
         file name: /etc/apt/sources.list
          modified: YES
         user name: root host name: debian
        process ID: 5732
While opening file "/etc/apt/sources.list"
             dated: Tue Dec 3 22:17:38 2019
      NEWER than swap file!
(1) Another program may be editing the same file.If this is the case,
    be careful not to end up with two different instances of the same
    file when making changes.Quit, or continue with caution.
(2) An edit session for this file crashed.
    If this is the case, use ": recover" or "vim -r /etc/apt/sources.list"
    to recover the changes (see ": help recovery").
    If i did this already, delete the swap file "/etc/apt/.sources.list.swp"
    to avoid this message.
"/etc/apt/sources.list" 33 lines, 1668 characters
Press ENTER or type command to continue
Trends