I ought to know why this is the case, but I don't.
Why does system 'cls' clear my CLI session screens
but `cls` and qx[cls] not?
perl -e"system 'cls'" perl -e"`cls`" perl -e"qx[cls]" [download]
In reply to The difference between [system] and `backticks` and [qx//] (on win32) by BrowserUk