-# guess the current platform.
-#IS_UNIX=$(uname | grep -i linux)
-#if [ -z "$IS_UNIX" ]; then IS_UNIX=$(uname | grep -i unix); fi
-#if [ -z "$IS_UNIX" ]; then IS_UNIX=$(uname | grep -i darwin); fi
-#IS_DOS=$(uname | grep -i ming)
-#if [ -z "$IS_DOS" ]; then IS_DOS=$(uname | grep -i cygwin); fi
-