Hi Ricardo!

> --8<---------------cut here---------------start------------->8---
> (substitute* "hw-probe.pl"
>    (("Cmd\\(\"([^\"]+)" _ command)
>     (string-append "Cmd(\"" (which command))))
> --8<---------------cut here---------------end--------------->8---

Thanks for the snippet and explanation.

I am wondering these,
[1] Does require import of specific modules?
[2] If `(which command)`'s output is empty, will it return #f?

Regards,
RG.