Unknown suffix (.txt) ignoring(err/error.txt) at - line 41.

rename [
  "GridSquare_0000000077_FoilHole_0000000001_Data_0000000002_20120315_103721.jpg",
  "1.jpg",
]

rename [
  "GridSquare_0000000077_FoilHole_0000000001_Data_0000000002_20120315_103721.xml",
  "1.xml",
]

rename ["blah_foo.jpg", "2.jpg"]

rename ["blah_bar.xml", "2.xml"]

rename ["blah/foo.jpg", "blah/3.jpg"]

rename ["blah/bar.xml", "blah/3.xml"]