backup all files,not just *.txt and license (also . files)

fix checking of old archive, this was not working correct

backup_cosmicvoyage

@@ -24,22 +24,21 @@ then
     exit 1
 fi
 
-
 echo "backing up $SHIPS/* to $TGZ"
 
-tar cvfz $TGZ */*.txt */LICENSE
+# have to use */* since it would otherwise backup the symlinks and not
+# the target, maybe we could use an option in tar otherwise
+
+tar cvfz $TGZ */* */.??*
 
 # don't keep backup file if nothing has changed
 
-if [ -f "$OLDBACKUP" ]
+if [ -f "$OLDBACKUP" ] && cmp -s "$OLDBACKUP" $TGZ
 then
-    if cmp -s "$OLDACKUP" $TGZ
-    then
-	echo "file is different, keeping new file"
-    else
-	echo "nothing has changed, no new backup"
-	rm -f $TGZ
-    fi
+    echo "nothing has changed, no new backup"
+    rm -f $TGZ
+else
+    echo "file is different, keeping new file"
 fi
 
 test -f $TGZ && echo backup of file $TGZ was successful