So I'd have to do it by using a parameter as a flag? Is that the only way, or is there any way for a script to tell, such as by looking at input or output or something else that I wouldn't specify in a parameter?

Parameters are delicious, learn to love them :)

In reply to Re^3: How Was My Script Run? by Anonymous Monk
in thread How Was My Script Run? by HalNineThousand

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