Check for bad line end characters on the shebang line. A new line character (lf) is expected - a carriage return (cr) or cr/lf pair will cause grief of the nature you describe.

True laziness is hard work

In reply to Re: bad interpretor error when running scripts off an NFS share by GrandFather
in thread bad interpretor error when running scripts off an NFS share by GaijinPunch

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