sum(1)                                                     sum(1)



     NAME
          sum - print checksum and block count of a file

     SYNOPSIS
          sum [-r] file

     DESCRIPTION
          sum calculates and prints a 16-bit checksum for the named
          file, and also prints the number of blocks in the file.  It
          is typically used to look for bad spots, or to validate a
          file communicated over some transmission line.  The flag
          option -r causes an alternate algorithm to be used in
          computing the checksum.

     EXAMPLE
               sum filea

          produces the checksum and the block count of filea.

     FILES
          /bin/sum

     SEE ALSO
          wc(1).

     DIAGNOSTICS
          Read error is indistinguishable from end-of-file on most
          devices; check the block count.



























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