"Common tasks" section added.

README

@@ -30,3 +30,35 @@ Bootstrapping from CVS
 ======================
 
 Use the bootstrap.sh script to create a configure script.
+
+Common Tasks
+============
+
+To scan for new files:
+
+    $ ./scanner.py
+
+To create an ISO image:
+
+    $ ./mkiso.py
+
+To burn the image:
+
+    # cdrecord -v dev=0,0 -eject /movies/tmp/11.iso 
+
+To erase a CD-RW disk:
+
+    # cdrecord -v dev=0,0 blank=fast
+
+or, if that fails:
+
+    # cdrecord -v dev=0,0 -force blank=all
+
+To remove all traces of a disk:
+
+    $ mysql -D isoonline
+    mysql> select * from media;
+    mysql> select media, count(*) from contents group by media;
+    mysql> select count(*) from contents where media = 11;
+    mysql> delete from contents where media = 11;
+    mysql> delete from media where media_id = 11;