SUM(1)               INTERACTIVE UNIX System               SUM(1)



          NAME
               sum - print checksum and block count of a file

          SYNOPSIS
               sum [ -r ] file

          DESCRIPTION
               The sum command calculates and prints a 16-bit checksum for
               the named file and 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 option
               -r causes an alternate algorithm to be used in computing the
               checksum.

          SEE ALSO
               wc(1).

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



































          Rev. Editing Package                                       Page 1