==== deb-Paket nur herunterladen ====
=== Ohne abhängige Pakete ===
<code>
apt-get download <Paket_Name>
</code>

=== Mit abhängen Paketen ===
<code>
apt-get install --download-only <Paket_Name>
</code>

==== deb-Paket auspacken ====
<code>
dpkg -x <packet.deb> <Directory>
dpkg -x packet.deb /tmp/out/
dpkg -x packet.deb .

ar x <packet.deb>
ar t <packet.deb>   # Inhalt des Archiv's
</code>

==== Inhalt eines Pakets (Files) ====
=== Nötige Pakete ===
<code>
apt-get install apt-file
apt-file update
</code>
=== alle Pakete auflisten ===
<code>
apt-file list <Paket_Name>
</code>
=== Files in Paketen suchen ===
<code>
apt-file search libasound.so.2
libasound2: /usr/lib/x86_64-linux-gnu/libasound.so.2
libasound2: /usr/lib/x86_64-linux-gnu/libasound.so.2.0.0
</code>

==== deb-Paket Abhängigkeiten anzeigen ====
<code>
apt-cache show <Paket_Name>
</code>

==== Infos zu Paketen ====
<code>
apt show <Paket_Name>
</code>

==== Alle Pakete in einem Repository auflisten ====
<code>
cd /var/lib/apt/lists
ls -l
...
-rw-r--r-- 1 root root    43340 10. Mär 09:50 download.docker.com_linux_debian_dists_bullseye_InRelease
-rw-r--r-- 1 root root   118938  9. Mär 23:46 download.docker.com_linux_debian_dists_bullseye_stable_binary-amd64_Packages
-rw-r--r-- 1 root root   231878 10. Sep 11:45 ftp.de.debian.org_debian_dists_bullseye_contrib_binary-amd64_Packages
-rw-r--r-- 1 root root   192685  9. Jul 2022  ftp.de.debian.org_debian_dists_bullseye_contrib_i18n_Translation-en
-rw-r--r-- 1 root root   178776 10. Sep 11:45 ftp.de.debian.org_debian_dists_bullseye_contrib_source_Sources
-rw-r--r-- 1 root root   116054 17. Dez 11:24 ftp.de.debian.org_debian_dists_bullseye_InRelease
-rw-r--r-- 1 root root 45534962 10. Mär 10:24 ftp.de.debian.org_debian_dists_bullseye_main_binary-amd64_Packages
-rw-r--r-- 1 root root 30246698 17. Dez 10:48 ftp.de.debian.org_debian_dists_bullseye_main_i18n_Translation-en
-rw-r--r-- 1 root root 44655922 17. Dez 10:48 ftp.de.debian.org_debian_dists_bullseye_main_source_Sources
...

egrep 'Package|Version' download.docker.com_linux_debian_dists_bullseye_stable_binary-amd64_Packages | sed 'N;s/\n/ /'
Package: containerd.io Version: 1.4.10-1
Package: containerd.io Version: 1.4.11-1
Package: containerd.io Version: 1.4.12-1
Package: containerd.io Version: 1.4.13-1
Package: containerd.io Version: 1.4.4-1
...
</code>

==== Nicht mehr benötigte Pakete löschen ====
Wie z. B. alte Kernel + initramrd
<code>
apt --purge autoremove
</code>