fix renamePptx

.scripts/renamePptx.sh

@@ -1,3 +1,11 @@
 for f in *.pptx; do
-  mv -- "$f" "$(echo "$f" | tr '[:upper:]' '[:lower:]' | tr ' ' '-')"
+  name="${f%.*}"                      # strip extension
+  ext="${f##*.}"                      # get extension
+  newname=$(echo "$name" \
+    | tr '[:upper:]' '[:lower:]' \
+    | tr ' ' '-' \
+    | sed 's/&/and/g' \
+    | tr -d '.,()'                    # remove dots, commas, and parentheses
+    )                     
+  mv -- "$f" "$newname.$ext"
 done