How to execute and capture stdout of an external command in Ruby using system () without escaping the shell?

Question

I can name the system ("echo", "'"), and this will not be interpreted by the shell. I expect the result: '' on stdout. But I need to fix this result. % x is not an option, since I do not want to start the shell, but I execute the command directly (and I do not want to execute shell escaping).

Answer 1

Use IO::popen( API link )
A little more in depth