sum(1)             UNIX System V(BSD Compatibility Package)              sum(1)


NAME
      sum - calculate a checksum for a file

SYNOPSIS
      /usr/ucb/sum filename

DESCRIPTION
      sum calculates and displays a 16-bit checksum for the named file, and
      also displays the size of the file in kilobytes.  It is typically used to
      look for bad spots, or to validate a file communicated over some
      transmission line.  The checksum is calculated by an algorithm which may
      yield different results on machines with 16-bit ints and machines with
      32-bit ints, so it cannot always be used to validate that a file has been
      transferred between machines with different-sized ints.

SEE ALSO
      wc(1), sum(1) in the User's Reference Manual

DIAGNOSTICS
      Read error is indistinguishable from EOF on most devices; check the block
      count.

NOTES
      Obsolescent.






























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