Windows Batch help in setting a variable from command output [duplicate]

Answer 1

what you are essentially doing is listing out .txt files. With that, you can use a for loop to over dir cmd eg

for /f "tokens=*" %%i in ('dir /b *.txt') do set file=%%i

or if you prefer using your ls, there's no need to pipe to find.

for /f "tokens=*" %%i in ('ls *.txt') do set file=%%i