sum(1)                   USER COMMANDS                     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.





























             Last change: BSD Compatibility Package             1