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I think part of the challenge (indeed, maybe most of it) is trying to figure out exactly what the person is asking. Usually they know exactly what they want, but end up expressing it really, really badly. :) Some questions are so vague that all you can do is throw a bunch of clues and hope that some stick! :)

I like going beyond the question itself to see exactly what they are trying to accomplish. In other words, the question may be about some esoteric (or common) perl nuance, but I also like to try and give them some insite on code design, user interface, the cost (CPU, speed, readability) of what they want, alternative ways to do it, etc.

There is some risk as coming across as patronizing, or even insulting the person: after all, if they are asking about a regex, and you point out that the whole block around it is ill-written...

This might sound harsh, but I tend to assume that those who cannot carefully craft their question, cannot carefully craft their code. </alliteration>


In reply to RE: XYZ Questions by turnstep
in thread XYZ Questions by chromatic

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    [Corion]: But yes, "who started this process" is interesting information :)
    [tye]: no, I really believe that "login user" was added as a fundamental bit of info about each process in order to enhance the usefulness of auditing
    [Corion]: Ah - if that information is saved in a file, then you could theoretically spam that file and confuse getlogin(). So, don't use it for authentication :)
    [tye]: that is what getlogin() certainly *used* to do. I don't believe that is what it certainly should do.
    [davido]: /var/run/utmp is 664 i think.
    [tye]: Note that my "man getlogin" says that it uses stdin when it should use /dev/tty (calling a glibc bug). But that does not appear to be the case when I test it. But maybe Perl's getlogin() is not using glibc's getlogin().
    [oiskuu]: well, run a strace and see what the getlogin does for you.... As I said. SELinux probably has those security labels. But not regular linux.
    [tye]: for example, read https://unix. stackexchange.com/ questions/146138/ loginuid-should-be -allowed-to-change -or-not-mutable-or -not
    [tye]: I'm not using SELinux and it certainly appears to disagree with you. shrug
    [tye]: Since you brought up /proc, oiskuu, I didn't see you respond to my suggestion of 'loginuid'. Does your /proc not have such?

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