shutdown computer after the halt command
dteske at vicor.com
Tue Feb 8 01:38:54 UTC 2011
On Mon, 2011-02-07 at 19:26 -0600, Adam Vande More wrote:
> On Mon, Feb 7, 2011 at 7:13 PM, Devin Teske <dteske at vicor.com> wrote:
> There's no technical reason to avoid using halt directly other
> than the
> fact that shutdown sends a message to connected users while
> halt does
> P.S. I welcome the rebuttle as a learning experience if the
> above is not
> 100% accurate and true (but be-warned... I went around the
> polling _really_ old UNIX hands before making the above
> I used to believe that until I was shown I was wrong. The easiest way
> to see you're wrong is to drop to ttyv0 then do one of each like a
> reboot then a shutdown -r now. In the latter case, you'll
> notice /etc/rc.d/ and /usr/local/etc/rc.d/ stop scripts being
> processed but not so in the former. In both types of shutdowns,
> everything *should* exit cleanly but processes are terminated with
> different signals and certain types of applications really need the
> full rc stop script to end cleanly like HAST and CARP for example.
> shutdown -r/p is a really good habit to form.
> FWIW, someone also stated reboot on Linux behaves like shutdown -r now
> so that I sure contributes to the confusion.
Thank you very much for the explanation!
Yes, I (we) had completely forgotten about the shutdown scripts.
Of course, many of us still remember the days when it standard fare to
"sync; sync; halt".
> Adam Vande More
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