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Re: Shutdown temporär unterbinden

Am Samstag 20 November 2010 schrieb Wilko Fokken:
> Moin mitnanner,

Hallo auch,

> Ich weiß nicht, ob mein Debian Sarge hier so veraltet ist, daß meine
> Options- Überlegungen für Euch irrelevant sind. Falls nicht:

Sieht nicht so aus:

       shutdown  can  be  called  from  init(8) when the magic keys
       CTRL-ALT-DEL are pressed, by creating an  appropriate  entry
       in  /etc/inittab.  This means that everyone who has physical
       access to the console keyboard can shut the system down.  To
       prevent  this,  shutdown  can  check to see if an authorized
       user is logged in on one of the virtual consoles.  If  shut‐
       down is called with the -a argument (add this to the invoca‐
       tion of shutdown in /etc/inittab), it checks to see  if  the
       file  /etc/shutdown.allow  is present.  It then compares the
       login names in that file with the list of  people  that  are
       logged in on a virtual console (from /var/run/utmp). Only if
       one of those authorized users or root is logged in, it  will
       proceed. Otherwise it will write the message

       shutdown: no authorized users logged in

       to  the  (physical) system console. The format of /etc/shut‐
       down.allow is one user name per line. Empty lines  and  com‐
       ment lines (prefixed by a #) are allowed. Currently there is
       a limit of 32 users in this file.

       Note that if /etc/shutdown.allow  is  not  present,  the  -a
       argument is ignored.

Manpage zu shutdown aus sysvinit 2.88dsf-12 aus Squeeze.


shambhala:~> shutdown 2>&1 | head -2
Usage:    shutdown [-akrhPHfFnc] [-t sec] time [warning message]
                  -a:      use /etc/shutdown.allow

PS: Für Debian Sarge gibts seit langer Zeit keine 
Sicherheitsaktualisierungen mehr. Du machst aber den Eindruck, als 
könntest Du das wissen ;).

Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7

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