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--- debian:backports:example_use_of_backport [2023/07/17 12:41] – created peter
+++ debian:backports:example_use_of_backport [2023/07/17 12:54] (current) – peter
@@ Line 1: / Line 1: @@
 ====== Debian - Backports - Example use of Backport ======
+Using backports is simple.
+----
+===== Configure Backport =====
+Add this line to the /etc/apt/sources.list.
+<file bash /etc/apt/sources.list>
+deb http://www.backports.org/debian etch-backports main contrib non-free
+</file>
+----
+===== Update =====
+<code bash>
+apt-get update
+</code>
+<WRAP info>
+**NOTE:**  An error message might be seen:
+<code>
+Reading package lists... Done
+W: GPG error: http://www.backports.org etch-backports Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY EA8E8B2116BA136C
+W: You may want to run apt-get update to correct these problems
+</code>
+  * This message comes on Debian Etch because you have not imported the backports keyring.
+</WRAP>
+----
+===== Import the backports keyring =====
+<code bash>
+sudo apt-get install debian-backports-keyring
+</code>
+----
+===== Example install of a backport package =====
+To install a newer version of nmap:
+<code bash>
+sudo apt-get -t etch-backports install nmap
+</code>
+<WRAP info>
+**NOTE:**
+  * **-t etch-backports**:  Since all backports are deactivated by default, the package manager needs to be told to use the backports repository.
+</WRAP>
+<WRAP important>
+**WARNING:**  It you forget to tell apt-get that nmap is installed from backports, and run another apt-get install nmap, it will remove the backports package and install the standard one.
+  * A simple solution to this is to use [[Debian:Backports:Pinning Backports|Pinning Backports]].
+</WRAP>