Reboot or init 6.

[Phill Whiteside]

the difference appears to be that init 6 calls the /etc/init.d scripts to
halt processes whilst reboot does not?

Regards,

Phill.

On 28 November 2012 10:07, Nio Wiklund <nio.wiklund at gmail.com> wrote:

> On 2012-11-28 08:54, Brendan Donegan wrote:
> > On 28/11/12 06:59, Carla Sella wrote:
> >> I use shutdown -r now.
> >> I'm used to UNIX, so I got this habit, in SCO UNIX it used to be
> >> shutdown -g0.
> > I also use shutdown now -r
> >>
> >> Carla Sella
> >> email: carla.sella at gmail.com <mailto:carla.sella at gmail.com>
> >> https://launchpad.net/~carla-sella <
> https://launchpad.net/%7Ecarla-sella>
> >>
> >>
> >>
> >> On Wed, Nov 28, 2012 at 12:45 AM, Phill Whiteside <PhillW at ubuntu.com
> >> <mailto:PhillW at ubuntu.com>> wrote:
> >>
> >>     Hi,
> >>
> >>     as there are times that machines in test mis-behave and we have
> >>     (hopefully) still got access to a terminal. Which of these do you
> >> use?
> >>
> >>     "init 6" performs reboot in a clean and orderly manner,informing
> >>     the daemon of the change in runlevel,which subsequently achieves
> >>     the appropriate milestone and ultimately executes the rc0 kill
> >>     scripts.
> >>
> >>     "reboot" performs an immediate system reboot,does not execute the
> >>     rc0 kill scripts,simply unmounts file systems and reboots the
> >>     System. It is not recommended,especially when you are rebooting
> >>     after a live-upgrade of OS & any patch-updates ,etc.
> >>
> >>     I'm not sure if "shutdown -y -i6 -g0" still is an option ( I used
> >>     it many years ago on restarting Unix systems but it is calling
> >> init 6)
> >>
> >>     Regards,
> >>
> >>     Phill.
> >>
> >>
>
> --
> https://wiki.ubuntu.com/phillw
>
>
> from  man reboot (in 12.04 LTS)
> -----------------------------------------------------------
> NAME
>        reboot, halt, poweroff - reboot or stop the system
>
> SYNOPSIS
>        reboot [OPTION]...
>
>        halt [OPTION]...
>
>        poweroff [OPTION]...
>
> DESCRIPTION
>        These programs allow a system administrator to reboot,
>        halt or poweroff the system.
>
>        When called with --force or when in runlevel 0 or 6,
>        this tool invokes the reboot(2) system call itself and
>        directly reboots the system.  Otherwise this simply
>        invokes the shutdown(8) tool with the appropriate
>        arguments.
>
>        Before  invoking  reboot(2), a shutdown time record is
>        first written to
>        /var/log/wtmp
> -----------------------------------------------------------
> so 'reboot' and 'shutdown -r now' should do the same thing.
>
> Is this really different from 'init 6'?
>
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-- 
https://wiki.ubuntu.com/phillw
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