How to execute a command in a command?

Question

cmd/bat

There is a command with many arguments:
file.exe -a /abd -b -c \way -i -z <CONTENT> -v
And here, the most interesting thing, you need to get the output of the contents of the X.txt file after the -z argument. How to do it?

Answer 1

I implemented it like this:

set /p CONTENT=< "C:\way\file.txt"
file.exe -a /abd -b -c \way -i -z %CONTENT% -v

Answer 2

You can filter lines in a text file using findstr.
You can split a string into tokens with for /f
See:

findstr /?
for /?