;



              ZCPR3 File Comparison Utilities

                          C - 
CRC

                          D - 
DIFF

:D


Command:  DIFF 2.0


Syntax:

     DIFF dir:ufn o...
or
     DIFF dir:ufn1,dir:ufn2 o...


Function:

     DIFƠ i� use� t� compar� tw� files��  I� ca� b� mad� t� �
simpl�� stat� i� th� tw� file� ar� differen�� (stoppin� �
immediatel� afte� th� firs� differenc� i� located� o� i� ca� �
lis� al� o� th� difference� betwee� tw� file� o� � byte-for-�
byt� basis.


     The form:  DIFF dir:ufn o...

compare� th� fil� i� th� indicate� director� wit� th� fil� �
b� th� sam� nam� i� th� curren� directory.

     The form:  DIFF dir:ufn1,dir:ufn2 o...

compares the two files indicated.


Options:

     C - Compare Files Only and Stop at First Difference
     M - Multiple Runs
          When a comparison is complete, prompt the user
          for new disks, allow him to change disks, and then
          run the comparison again until the user says to stop



Comments:

     I� use� t� prin� ou� differences�� DIF� present� th� �
following information to the user:

          o Relative Offset from the beginning of the file

          o Byte values in the two files:

               - in Decimal
               - in Hexadecimal
               - in ASCII


Selected Error Messages:

     "AFРNo�� Allowed� mean� tha� th� use� specifie� a� �
ambiguou� fil� nam� (on� containin� wil� cards)��  Bot� fil� �
names must be unambiguous.



Examples of Use:

     DIFF text:myfile.txt
          - prints differences between MYFILE.TXT in TEXT:
               and MYFILE.TXT in current directory

     DIFF myfile.txt
          - compares MYFILE.TXT against itself

     DIFF backup:myfile.txt mc
          - compares MYFILE.TXT in BACKUP: with MYFILE.TXT
               in the current directory; stops as soon as
               a difference is found; when done, prompts
               the user to change disks (BACKUP could be a
               floppy, and this command is checking to see
               tha� al� copie� o� MYFILE.TX� o� several
               disks are the same

:C

Command:  CRC 2.0


Syntax:

     CRC dir:afn1,dir:afn2,... o...


Function:

     Th� CR� Chec� Utilit� distribute� wit� ZCPR�� compute� �
CRà value� fo� � lis� o� files��  I� use� th� sam� CR� �
computatio� algorith� employe� b� Keit� Peterse� i� hi� CRC� �
program� an� th� value� com� ou� th� same.

     Th� CRà Chec� Utilit� compute� th� CR� value� o� � �
selecte� se� o� file� an� print� ou� th� fil� names�� thei� �
size� (i� term� o� � byte� an� numbe� o� records)� an� thei� �
CRà value� i� hexadecimal��  � coun� o� th� numbe� o� line� �
o� cod� (assumin� tex� files� an� � commen� associate� wit� �
eac� fil� ca� b� optionall� included��  � lis� o� ambiguou� �
file� name� ma� b� provide� t� CRC.


Options:

     C - Comment Output; add comments to output listing
          on disk or printer
     D - Disk Output; send output to the disk file CRC.CRC
     I - Inspect Files and Approve Each File to be reported
          on before output is produced
     L - Count Lines of Text and include in output (assume
          all files are text files)
     P - Printer Output; send output to the printer



Comments:

     CRà i� usefu� i� transferrin� file� fro� on� sit� t� �
another��  Th� CR� value� o� th� file� ca� b� compute� an� �
liste� a� on� site�� transferred�� an� compare� a� th� othe� �
site.

     Th� � optio� add� th� utilit� o� trackin� cod� siz� i� �
terms of lines of code.


Selected Error Messages:

     Self-Explanatory



Examples of Use:

     CRC *.MAC L
          -- Compute CRCs of all *.MAC files in the current
               directory; include lines-of-code count in
               display


     CRC *.* DLC
          -- Compute CRCs of all files, include count of
               lines of text and comments on each file,
               and write output to disk in file named
               CRC.CRC