Just make sure nobody types "format c:" into that configuration script!
A much safer way to go about it is to read the config file and look up the provided command in a hash to make sure it is legit.
my ($cmd, @params) = split ',', <$inputFileHandle>;
if (exists $hashOfAllowedCommands{$cmd})
{
$worksheet->$hashOfAllowedCommands{$cmd}->(@params)
}else{
print "Invalid command ignored in config file at line $.\n";
}
If you still want to play with the dynamite then take a look into eval
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