potcasse: improve other OSes support

potcasse

@@ -117,7 +117,16 @@ EOF
     do
         echo "Scanning $episode"
         . ${episode}/metadata.sh
-        SIZE=$(stat -f "%z" "${episode}/${AUDIOFILE}")
+        UNAME=$(uname)
+        if
+        [ $UNAME = 'OpenBSD' ] ||
+        [ $UNAME = 'FreeBSD' ] ||
+        [ $UNAME = 'NetBSD' ]
+        then
+            SIZE=$(stat -f "%z" "${episode}/${AUDIOFILE}")
+        else
+            SIZE=$(stat --format="%s" "${episode}/${AUDIOFILE}")
+        fi
         EXT=${AUDIOFILE##*.}
         rsync -a "${episode}/${AUDIOFILE}" output_html/episodes/
         cat <<EOF >> $TMPRSS