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             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:

    "AFΠ No� 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