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From: nigam%mwvms@MITRE.ARPA.UUCP
Newsgroups: comp.os.vms
Subject: CHECKSUM
Message-ID: <8706101253.AA05305@mitre.arpa>
Date: Wed, 10-Jun-87 08:53:30 EDT
Article-I.D.: mitre.8706101253.AA05305
Posted: Wed Jun 10 08:53:30 1987
Date-Received: Sat, 13-Jun-87 11:14:06 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The MITRE Corp., Washington, D.C.
Lines: 31

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>I stumbled on the verb CHECKSUM today.  Now, I admit only to limited
>experience with VAX verbs of the esoteric sort.  I assume that CHECKSUM is
>supposed to give a checksum value for a file or image.  when i run it, it
>prompts for a filename, then comes back to the prompt with no further
>information.
>...
     
Checksum can be used to compute a separate value for
different part of an executable file.
Checksum/file (default) creates a symbol with the result.
Examples of both follow:
     
$checksum/image tab.exe
file USER2:[VOAOP.ALOK]TAB.EXE;1
image section %D'1' checksum is %X'69211A27'
image section %D'2' checksum is %X'270DC263'
image section %D'3' checksum is %X'E23A9D20'
image section %D'4' checksum is %X'7ED61A58'
image section %D'5' checksum is %X'100B731B'
image header checksum is %X'3CBF990A'
checksum of all image sections is %X'C2CB2C27'
     
$checksum tab.exe
$show symbol checksum$checksum
  CHECKSUM$CHECKSUM = "826517707"
     
     
Alok C. Nigam
M14875%MWVM@MITRE.ARPA