--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bin/basicopt	Wed Nov 02 22:12:16 2011 +0700
@@ -0,0 +1,11 @@
+#!/bin/sh
+get_filename() {
+	printf "%s\n" "$*" | sed -e 's/^\(.*\)\.[^.]*$/\1/'
+}
+get_extension() {
+	if [ -n "$(printf "%s\n" "$*" | sed -e 's/^[^.]*//')" ]; then
+		printf "%s\n" "$*" | sed -e 's/^.*\(\.[^.]*$\)/\1/'
+	else
+		printf "%s\n" ""
+	fi
+}