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+<samba:parameter name="dfree command"
+ context="G"
+ type="string"
+ advanced="1" developer="1"
+ xmlns:samba="http://samba.org/common">
+<description>
+
+ <para>The <parameter moreinfo="none">dfree command</parameter> setting
+ should only be used on systems where a problem occurs with the
+ internal disk space calculations. This has been known to happen
+ with Ultrix, but may occur with other operating systems. The
+ symptom that was seen was an error of &quot;Abort Retry
+ Ignore&quot; at the end of each directory listing.</para>
+
+ <para>This setting allows the replacement of the internal routines to
+ calculate the total disk space and amount available with an external
+ routine. The example below gives a possible script that might fulfill
+ this function.</para>
+
+ <para>The external program will be passed a single parameter indicating
+ a directory in the filesystem being queried. This will typically consist
+ of the string <filename moreinfo="none">./</filename>. The script should return two
+ integers in ASCII. The first should be the total disk space in blocks,
+ and the second should be the number of available blocks. An optional
+ third return value can give the block size in bytes. The default
+ blocksize is 1024 bytes.</para>
+
+ <para>Note: Your script should <emphasis>NOT</emphasis> be setuid or
+ setgid and should be owned by (and writeable only by) root!</para>
+
+ <para>Where the script dfree (which must be made executable) could be:</para>
+
+<para><programlisting format="linespecific">
+#!/bin/sh
+df $1 | tail -1 | awk '{print $2&quot; &quot;$4}'
+</programlisting></para>
+
+ <para>or perhaps (on Sys V based systems):</para>
+
+<para><programlisting format="linespecific">
+#!/bin/sh
+/usr/bin/df -k $1 | tail -1 | awk '{print $3&quot; &quot;$5}'
+</programlisting></para>
+
+ <para>Note that you may have to replace the command names with full path names on some systems.</para>
+
+</description>
+<value type="default"><comment>By default internal routines for
+ determining the disk capacity and remaining space will be used.</comment></value>
+<value type="example">/usr/local/samba/bin/dfree</value>
+</samba:parameter>