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* Manual.

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Eelco Dolstra 2006-09-29 11:03:16 +00:00
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doc/manual/nix-collect-garbage.xml
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<refsynopsisdiv>
<cmdsynopsis>
<command>nix-collect-garbage</command>
<arg><option>--delete-old</option></arg>
<arg><option>-d</option></arg>
<group choice='opt'>
<arg choice='plain'><option>--print-roots</option></arg>
<arg choice='plain'><option>--print-live</option></arg>
@ -20,10 +22,28 @@
<refsection><title>Description</title>
<para>The command <command>nix-collect-garbage</command> is an
obsolete wrapper around <link
linkend="rsec-nix-store-gc"><command>nix-store
--gc</command></link>.</para>
<para>The command <command>nix-collect-garbage</command> is mostly an
alias of <link linkend="rsec-nix-store-gc"><command>nix-store
--gc</command></link>, that is, it deletes all unreachable paths in
the Nix store to clean up your system. However, it provides an
additional option <option>-d</option> (<option>--delete-old</option>)
that deletes all old generations of all profiles in
<filename>/nix/var/nix/profiles</filename> by invoking
<literal>nix-env --delete-generations old</literal> on all profiles.
Of course, this makes rollbacks to previous configurations
impossible.</para>
</refsection>
<refsection><title>Example</title>
<para>To delete from the Nix store everything that is not used by the
current generations of each profile, do
<screen>
$ nix-collect-garbage -d</screen>
</para>
</refsection>