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.  It also prints the number of blocks in the file.  Use sum to look for bad spots or to validate a file communicated over some transmission line. 

SEE ALSO

wc(1)

DIAGNOSTICS

‘Read error’ is indistinguishable from end of file on most devices.  Check the block count. 

INTEGRATED SOLUTIONS 4.3 BSD  —  April 29, 1985