Dave,

Many thanks for the reply.

No, I wasn't aware about the necessity to change group before ID. That's fixed it.

I still note, however, that setuid and setgid do not affect the effective ID. This is despite what the documentation says (just over halfway down). I've adjusted the script to only send setgid a single number as opposed to a space-separated list, but there's still no effect to the effective.

I'm certain it's down to my understanding. I would rather use the POSIX calls than the special variables, so if anyone has any more comments, I'd welcome them.

J.

In reply to Re^2: Daemon IDs and groups aka setuid setgid vs $< $> $( $) by furrypop
in thread Daemon IDs and groups aka setuid setgid vs $< $> $( $) by furrypop

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.