Name: sum
Version: 2.0 (December 1997)
Shell: GNO
Author: Dave Tribby (from FreeBSD code)
Contact: tribby@cup.hp.com
Where: /usr/bin
FTP: ground.icaen.uiowa.edu apple2.caltech.edu ftp.gno.org
Display file checksums and block counts (same as cksum)