sum(1B)
NAME
sum − calculate a checksum for a file
SYNOPSIS
/usr/ucb/sum filename
AVAILABILITY
SUNWscpu
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
DIAGNOSTICS
Read error is indistinguishable from EOF on most devices; check the block count.
NOTES
Obsolete.
SunOS 5.4 — Last change: 14 Sep 1992