http://www.perlmonks.org?node_id=925141


in reply to system CALC.exe opens command prompt ??

No typo. Just Windows being stupid.

Try the following two commands on your command line. Skip perl altogether. 

start c:\WINDOWS\system32\calc.exe
start "c:\WINDOWS\system32\calc.exe"
start /?
[Enter]
[Enter]
start "" "c:\WINDOWS\system32\calc.exe"

[download]
If the first argument is in double-quotes, it assumes that it's a window title, not a command.

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In Section Seekers of Perl Wisdom