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Re^9: How to combine these 2 subroutines in one?

by Anonymous Monk
on Apr 04, 2014 at 09:41 UTC ( #1081095=note: print w/replies, xml ) Need Help??


in reply to Re^8: How to combine these 2 subroutines in one?
in thread How to combine these 2 subroutines in one?

Thank you so much for these tips, references have always been a headache to me... Actually, I don't quite understand what do we use them for, I need to study up on this more!
  • Comment on Re^9: How to combine these 2 subroutines in one?

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[davido]: hm, that seems to also survive $< manipulations @corion so good call.
[Corion]: tye: I also more randomly stumbled over it, as "who am i" unix implementation didn't really provide much help. But Wikipedia linked me to the List of Unix Programs (or something like it), and from there ...
[talexb]: Wasn't Brexit the name of the first Santana album?
[tye]: That's funny, saying getlogin() is less secure. For some uses, it is far superior to getpwuid(), precisely for reasons of security.
[LanX]: search strategy => Perl Functions by Category
[Corion]: ... I found discussion of the who utility and that it uses the POSIX 2008 getlogin function (but that function was available much earlier and thus even exists in Perl, as a search for getlogin on CPAN brought up Perl 5.26 as first hit
[tye]: oh, LanX, but I was thinking that it was not a function that Perl provided.
[Corion]: Yeah, I also went a more roundabout way, just to find that the solution had been with Perl all along! ;)
[tye]: perhaps the "less secure" comment was motivated by old versions of getlogin() and trolled through the 'last' log trying to match your TTY. On modern Unix, I believe getlogin() just returns a fundamental bit of identity from your process.
[tye]: (Because every thing you do has that tag available for auditd.)

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