sum(1)                                                     sum(1)



NAME
     sum - calculates a checksum

SYNOPSIS
     sum [-r] file...

ARGUMENTS
     file Specifies the file to be calculated by the sum command.

     -r   Causes an alternate algorithm to be used in computing
          the checksum.

DESCRIPTION
     sum calculates and displays a 16-bit checksum for the named
     file, and also displays 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.

EXAMPLES
     The command:

        sum filea

     produces the checksum and the block count of filea.

STATUS MESSAGES AND VALUES
     Read error is indistinguishable from end-of-file on most
     devices; check the block count.

FILES
     /bin/sum
          Executable file

SEE ALSO
     sumdir(1), wc(1)




















January 1992                                                    1