SUM(1)							   SUM(1)

NAME
       sum - sum and count blocks in a file

SYNOPSIS
       sum 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.

SEE ALSO
       wc(1)

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

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