add sfs support

diff --git a/ex b/ex
index 10175a06e8ed6f9c0295881d90671fcac1ffb263..f944f6556f50004f8eab4e005405a8f043c5c0d9 100755 (executable)
--- a/ex
+++ b/ex
@@ -54,6 +54,7 @@ to try it out sometime."
                 ;;
             *.r[0-9][0-9]|*.rar ) unrar x "$x" ;;
             *.dsc) dpkg-source -x "$x" ;;
+            *.sfs) $user unsquashfs "$x" ;;
             *)  echo "I don't kno how to extract $x";;
         esac
     done