Thomas Helle suggested to mention also the global summary and the
--list-sort feature of adu. This commit adds two more examples which
illustrate these features.
the user-summary:
.IP
$ adu --select --database-dir /root/adu-var
-
+.PP
+To print the one-line global summary instead, use
+.IP
+ $ adu --select --database-dir /root/adu-var --select-options '--select-mode global_summary'
+.PP
+To sort the user summary by file count rather than by file size, run
+.IP
+ $ adu --select --database-dir /root/adu-var --select-options '--list-sort=file_count'
.PP
The command below prints the five largest directories of the users root and
mysql: