Re: Deterministic delays in POSIX shell scripts (Was: Re: notify via virtual terminal available packages)

From	Andy Smith <andy@strugglers.net>
Newsgroups	linux.debian.user
Subject	Re: Deterministic delays in POSIX shell scripts (Was: Re: notify via virtual terminal available packages)
Date	2020-09-25 14:30 +0200
Message-ID	<ASV1o-8lE-5@gated-at.bofh.it> (permalink)
References	(3 earlier) <ASAzE-4fD-11@gated-at.bofh.it> <ASAzE-4fD-9@gated-at.bofh.it> <ASAJk-4iX-9@gated-at.bofh.it> <ASQEp-5FR-5@gated-at.bofh.it> <ASUoF-7Tw-7@gated-at.bofh.it>
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Hello,

On Fri, Sep 25, 2020 at 07:49:19AM -0400, Greg Wooledge wrote:
> On Fri, Sep 25, 2020 at 07:44:25AM +0000, Andy Smith wrote:
> > "hostid" tends to return a hexadecimal representation of the first
> > IPv4 address (but isn't guaranteed to).
> 
> unicorn:~$ hostid
> 007f0101
> 
> Doesn't look very useful.  That's just 127.0.1.1 in a 16-bit little
> endian format.

Oh, none of mine do that, it seems to pick the other IP address for
me. But if it's a problem there are other sources of "machine" ID as
I mentioned. There's some more here:

    http://0pointer.de/blog/projects/ids.html

> You know what else works really well?  Just putting a different start
> time in each system's crontab.

If that works for you, great, but I have quite a few machines, VMs
and containers provisioned identically and would rather not have to
change the scripts or configuration on a per-host basis.

Cheers,
Andy

-- 
https://bitfolk.com/ -- No-nonsense VPS hosting

Thread

notify via virtual terminal available packages Pòl Hallen <deben@fuckaround.org> - 2020-09-23 22:50 +0200
  Re: notify via virtual terminal available packages john doe <johndoe65534@mail.com> - 2020-09-24 10:40 +0200
  Re: notify via virtual terminal available packages Charles Curley <charlescurley@charlescurley.com> - 2020-09-24 15:50 +0200
    Re: notify via virtual terminal available packages Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-24 16:00 +0200
      Re: notify via virtual terminal available packages Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-24 16:40 +0200
        Re: notify via virtual terminal available packages Charles Curley <charlescurley@charlescurley.com> - 2020-09-24 16:50 +0200
          Re: notify via virtual terminal available packages Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-24 17:00 +0200
          Deterministic delays in POSIX shell scripts (Was: Re: notify via  virtual terminal available packages) Andy Smith <andy@strugglers.net> - 2020-09-25 09:50 +0200
            Re: Deterministic delays in POSIX shell scripts (Was: Re: notify via  virtual terminal available packages) Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-25 13:50 +0200
              Re: Deterministic delays in POSIX shell scripts (Was: Re: notify via  virtual terminal available packages) Andy Smith <andy@strugglers.net> - 2020-09-25 14:30 +0200
                Re: Deterministic delays in POSIX shell scripts (Was: Re: notify via  virtual terminal available packages) David Wright <deblis@lionunicorn.co.uk> - 2020-09-26 04:50 +0200
      Re: notify via virtual terminal available packages Charles Curley <charlescurley@charlescurley.com> - 2020-09-24 16:40 +0200

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