SPUG: Understanding RUID EUID and modules (fwd)

[Jim Ludwig]

John Costello wrote:
>> If I run this from a perl script
>> 
>> 
>> 	print "RUID $< and EUID $>\n";
>> 	$< = $> = 8000;
>> 	print "RUID now $< and EUID now $>\n";
>> 	$< = $> = 0;
>> 	print "RUID set to $< and EUID set to $>\n";
>> 
>> I get 
>> 
>> 	RUID 0 and EUID 0
>> 	RUID now 8000 and EUID now 8000
>> 	RUID set to 8000 and EUID set to 8000
>> 
>> which is what I expect.

I don't know if you're going to expect this, but
if you run *this* script as root...

	print "RUID $< and EUID $>\n";
	#$< = $> = 8000;
	$> = $< = 8000;
	print "RUID now $< and EUID now $>\n";
	$< = $> = 0;
	print "RUID set to $< and EUID set to $>\n";

...then you get this:

	RUID 0 and EUID 0
	RUID now 8000 and EUID now 8000
	RUID set to 0 and EUID set to 0

Cheers,
  jim