SUM(1)              RISC/os Reference Manual               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 512 byte 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.

     If no file is specified, sum expects input on stdin.

SEE ALSO
     wc(1).

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

































                        Printed 11/19/92                   Page 1