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--- linux:debian:packages-query [2024/09/15 07:17] – [Available Packages] oscar
+++ linux:debian:packages-query [2024/09/15 07:42] (current) – oscar
@@ Line 9: / Line 9: @@
   # apt-cache showpkg package_name
   # apt-cache list package_name
 ====== Installed Packages ======
-==== Check single package ====
+===== Check single package =====
 Run apt list package, it will return the available version and if it is installed "[installed]"
   # apt list package
@@ Line 23: / Line 20: @@
   bluez/stable,now 5.66-1 amd64 [installed]
   ------------------------------------------
-==== Query all manually installed packages ====
+===== Query all manually installed packages =====
   # apt list --manual-installed=true
  or
   # apt-mark showmanual
+====== dpkg-query - Low Level ======
+dpkg-query is a tool to query the dpkg database.
+<code>
+-l, --list [package-name-pattern...]
+     List  packages  matching  given pattern.
+     If no package-name-pattern is given, list all packages in /var/lib/dpkg/status.
+     Normal  shell wildchars are allowed in package-name-pattern.
+-s, --status package-name...
+       Report status of specified package.
+       This just displays the entry in the installed package status database.
+-L, --listfiles package-name...
+       List files installed to your system from package-name.
+-S, --search filename-search-pattern...
+       Search for packages that own files corresponding to the given pattern.
+       Standard  shell wildchars can be used in the pattern.
+-p, --print-avail package-name...
+       Display details about package-name, as found in /var/lib/dpkg/available.
+       Users of APT-based frontends should use apt-cache show package-name instead as the available file
+       is only kept up-to-date when using dselect.
+</code>