SUM(1) (Directory and File Management Utilities) SUM(1)
NAME
sum - print checksum and block count of a file
SYNOPSIS
sum [ -r ] 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. The option
-r causes an alternate algorithm to be used in computing the
checksum.
SEE ALSO
wc(1).
DIAGNOSTICS
``Read error'' is indistinguishable from end of file on most
devices; check the block count.
Page 1 May 1989