$ ls -lSr text_?_1
-rw-r--r--  1 ken  staff        1000  8 Feb  2013 text_K_1
-rw-r--r--  1 ken  staff     1000000  8 Feb  2013 text_M_1
-rw-r--r--  1 ken  staff  1000000000  8 Feb  2013 text_G_1