Using CRC SHA tool via Command Line?

[Mike Kirk]

Good Afternoon!
I think I found one of the greatest SHA Hash tools made! I would like to thank you first off for making it!
Secondly,
I have several files (600,000files totalling 500gb) I would like to automatically hash out using your * function. I know how to write code in python and can use the command line feature in windows to do this. I just cant figure out how to access your program in command line in windows 7. can you help???

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If there is no command line feature in your program,
Can you please add one?
Or
can you add a feature to CRC SHA * ---> Output to a text file named exactly same as the file with ".CRCSHA" added to the end of the file, and make a list and for-loop to do all the files in a directory and subdirectories recursively?
I would like to generate a separate text file to accompany my directory of ISOs I can use to verify the data, You know it would be EVEN better if you can add a feature to automatically VERYIFY the data based on the presence of the text file as well! Make it do this recursively too please!!!!

Mike -

[Roman Perich]

I used this (simple version) script for CRC - compatible with Total Commander, Servant Salamander, ... :

7za h -scrcsha256 .\* > %TEMP%\test1.sha
findstr /R /C:"^[0-9A-F][0-9A-F]* .*$" %TEMP%\test1.sha > %TEMP%\test2.sha
for /f "skip=1 tokens=1,2,3*" %a in (%TEMP%\test2.sha) do if "%c" NEQ "" echo.%a %c >> _CheckSum.sha
del /Q %TEMP%\test*.sha

[Igor Pavlov]

7z h *
7z h c:\folder
7z h c:\folder\*

[Roman Perich]

How to disable recurively ? 7za h -r0 path\mask - dont work correctly.

[Igor Pavlov]

-x!*\

[Roman Perich]

Good idea for -x!*\ for command prompt, but dont work in cmd script, because char ! is specialy for ENABLEEXTESION . Try script try.cmd :

SETLOCAL ENABLEEXTENSIONS
SETLOCAL ENABLEDELAYEDEXPANSION
7za.exe h -scrcsha256 -x!*\ *

Better would be to switch -r0 functioned well as a pack file.

[Igor Pavlov]

you can use also switch -r- switch

[Roman Perich]

How to set minimal compress method or only stored for any extensions. Example:
7za a -r
but for extension .7z, .avi, .jpg, ... set param store method -mx0 ?
Now created archiv in 2 steps:
create archiv with -mx0 for selected extension (jpg,avi,...) and second step update archiv for all files :
7za.exe a -r -mx0 archive.7z .jpg .png
7za.exe u -r * archive.7z

Better would be signle step.

[Igor Pavlov]

No way in one step now.
Note also that if you have same jpg file in different folders, you will have better compression ratio if you don't use -mx0.

[Roman Perich]

Thanks, I know, but saving a few kilobytes on each JPG and longer (de) compression is not worth it. CPU time rather will use to compress uncompressed data.