操作系统设计与实现源码

				
				
				SUM(1)                    Minix Programmer's Manual                     SUM(1)
				
				
				NAME
				     sum - compute the checksum and block count of a file
				
				SYNOPSIS
				     sum file
				
				OPTIONS
				     (none)
				
				EXAMPLES
				
				     sum /user/ast/xyz   # Checksum /user/ast/xyz
				
				DESCRIPTION
				
				     Sum computes the checksum of one or more files.  It is most often used to
				     see  if  a  file copied from another machine has been correctly received.
				     This program  works  best  when  both  machines  use  the  same  checksum
				     algorithm.  See also crc.
				
				SEE ALSO
				     cksum(1), crc(1).
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				
				                                                                             1