SUM(1)                   DOMAIN/IX SYS5                    SUM(1)



NAME
     sum - print checksum and block count of a file

USAGE
     sum [ -r ] file

DESCRIPTION
     Sum calculates and prints a 16-bit checksum for the named
     file. It also prints the number of blocks in the file.  Sum
     is typically used to look for bad spots, or to validate a
     file communicated over some transmission line.

     The -r option causes an alternate algorithm to be used in
     computing the checksum.

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

RELATED INFORMATION
     wc(1).
































Printed 12/4/86                                             SUM-1