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-rw-r--r--doc/apt-cache.8.xml14
1 files changed, 10 insertions, 4 deletions
diff --git a/doc/apt-cache.8.xml b/doc/apt-cache.8.xml
index b649149af..a76eb1000 100644
--- a/doc/apt-cache.8.xml
+++ b/doc/apt-cache.8.xml
@@ -32,10 +32,16 @@
&synopsis-command-apt-cache;
<refsect1><title>Description</title>
- <para><command>apt-cache</command> performs a variety of operations on APT's package
- cache. <command>apt-cache</command> does not manipulate the state of the system
- but does provide operations to search and generate interesting output
- from the package metadata.</para>
+ <para>
+ <command>apt-cache</command> performs a variety of operations on APT's
+ package cache. <command>apt-cache</command> does not manipulate the
+ state of the system but does provide operations to search and generate
+ interesting output from the package metadata. The metadata is acquired
+ and updated via the 'update' command of e.g. <command>apt-get</command>,
+ so that it can be outdated if the last update is too long ago, but in
+ exchange <command>apt-cache</command> works independently of the
+ availability of the configured sources (e.g. offline).
+ </para>
<para>Unless the <option>-h</option>, or <option>--help</option> option is given, one of the
commands below must be present.</para>