Multi-lined command output set as variable-CodePudding

So I've googled and searched stackflow; I think the output for the library I'm using and the way it's structured makes none of the answers work.

I downloaded a windows library called totp2 for command prompt. I am executing the command in my batch file and that works fine, but it wants to return the line I passed.

I'm looking to run the command, and only assign the very last line to a variable; stripping the word OTP: from the last line.

C:\Users\Dan\Desktop\devBash> t2otp.exe QQRZO4QIGPJFXS2QXDIL4JUO2KKQCPTOF2D5AX5M3R2VH5NM2ZUSXIXGP4WPMVTR sha256 6 30

T2OTP v2 - Command line TOTP Generator (c) TOKEN2
Algorithm: sha256
Seed: QQRZO4QIGPJFXS2QXDIL4JUO2KKQCPTOF2D5AX5M3R2VH5NM2ZUSXIXGP4WPMVTR
Interval: 30 seconds
OTP length: 6 digits
    
OTP: 666323

The above is exactly how it returns the command prompt results, with the code being on line 7 of the command output.

Current Code (hardcoded command just for testing):

For /F "EOL=/" %%A In ('t2otp.exe QQRZO4QIGPJFXS2QXDIL4JUO2KKQCPTOF2D5AX5M3R2VH5NM2ZUSXIXGP4WPMVTR sha256 6 30') Do Set "totp=%%A"

However that returns just OTP:

Current Result:

OTP: 666323

Needed Result:

Any help is really really appreciated.

And yes; it's a demo secret.

CodePudding user response：

For /F "Tokens=2 eol=/" %%A In ('t2otp.exe QQRZO4QIGPJFXS2QXDIL4JUO2KKQCPTOF2D5AX5M3R2VH5NM2ZUSXIXGP4WPMVTR sha256 6 30') Do Set "hash=%%A"

Easy way to feel dumb is when the answer is so simple. Solved.

CodePudding user response：

An even simpler answer is to add "clean" parameter at the end of the command (as described in Token2's documentation):

the last argument is optional, if argument equals to 'loop' , the tool will stay launched recalculating the current OTP until stopped with Ctrl C, if the argument is 'clean' the tool will produce the OTP only

So the code below:

t2otp.exe QQRZO4QIGPJFXS2QXDIL4JUO2KKQCPTOF2D5AX5M3R2VH5NM2ZUSXIXGP4WPMVTR sha256 6 30 clean

Will give you only the OTP (6 digits in your example)