gfwc - print the number of bytes, words, and lines in Gfarm files
       gfmpirun_p4 gfarm:gfwc input-gfarm-URL
       This is a sample application invoked with gfmpirun_p4(1).
       gfwc reads from input-gfarm-URL and prints the numbers of bytes, words,
       and lines to the standard output.