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my @array = ($command, $arg1, $arg2, $arg3);
system "@array > $outfile";

Can't spawn "cmd.exe": No such file or directory at D:\advanced_progra
+mming\test_syscall.pl line 11.

and

my @array = ($command, $arg1, $arg2, $arg3);
open CMD, "@array > $outfile" or die "open() failed - $!";

Name "main::CMD" used only once: possible typo at D:\advanced_programm
+ing\test_syscall.pl line 17.
open() failed - Invalid argument at D:\advanced_programming\test_sysca
+ll.pl line 17.