add exemple for dumpgdbm use

DumpGDBM/README.md

@@ -9,8 +9,44 @@ https://en.wikipedia.org/wiki/DBM_(computing)
 ## Exemple
 
 Le mini-script Perl `exemple.pl` montre bien comment faire une "base de données
-associative" en Perl.
-
-
+associative" en Perl. Il extrait les champs _usernale_ et _GECOS_ du fichier
+`/etc/passwd` et les injecte dans un fichier gdbm.
+
+```
+tth@redlady:~/Devel/KlugyTools/DumpGDBM$ ./exemple.pl 
+tth@redlady:~/Devel/KlugyTools/DumpGDBM$ ./dumpgdbm -i exemple.gdbm 
+working on [exemple.gdbm]
+
+dumpgdbm > first
+K: rtkit.
+D: RealtimeKit,,,.
+
+dumpgdbm > next
+K: man.
+D: man.
+
+dumpgdbm > next
+K: lightdm.
+D: Light Display Manager.
+
+dumpgdbm > ? ks
+
+command [ks]
+  Search a posix regex pattern in all the key fields.
+
+dumpgdbm > ks root
+K: root.
+D: root.
+
+dumpgdbm > ks tth
+K: tth.
+D: tTh,,,.
+
+dumpgdbm > 
+EOF ?
+tth@redlady:~/Devel/KlugyTools/DumpGDBM$ 
+```
+
+Well done bro.
 
 

DumpGDBM/exemple.pl

@@ -15,6 +15,7 @@ while (<SOURCE>)
 	@champs = split ":", $_;
 	$user = $champs[0]."\0";
 	$gecos = $champs[4]."\0";
+	# print $user, " ", $gecos, "\n";
 	$DB{$user} = $gecos;
 	}