Hello Markus!

Tuesday January 15 2019 10:58, you wrote to All:

 > On Mon, 07 Jan 2019 12:39:41 +0000 Jan Panteltje wrote:

 >> On a sunny day (07 Jan 2019 12:29:26 GMT) it happened A. Dumas
 >>  wrote in
 >> :
 >>
 >>> Markus Robert Kessler wrote:
 >>>> B.t.w., how can a PI be shutdown without automatically starting up
 >>>> again?
 >>>> You need to know when to power it off to prevent data loss or
 >>>> completely damaging the SD card. If you do a "shutdown -h now" or
 >>>> "init 0" or even a "halt", then your PI will do the shutdown, but
 >>>> will immediately restart again.
 >>>
 >>> No it doesn't, or at least it shouldn't. I have certainly never seen
 >>> that behaviour.
 >>
 >> I just type
 >>  poweroff
 >>
 >> and then it stays off.


 > Hi all,

 > I have to say "mea culpa" -- I just didn't wait long enough after
 > "shutdown now". After that command the LED  on Raspberry Zero WLAN
 > flashes several seconds long, and then the RPi will be asleep. I just
 > misinterpreted the flashing as the next attempt to boot up again.

 > B.t.w., I also tried to use "poweroff" command several times, but this
 > termiantes all without prior cleanup properly and, finally I ended up
 > with a non-working boot-partition which I had to reinstall. Well, the
 > card survived, and this time it's one from Imation. Let's see how long
 > this will work.

 > Best regards,

 > Markus


You should not use poweroff to close down the correct method is to issue :

shutdown -h now

the 'now' is just that do it immediately but without it will do so after one
minute.

shutdown -r now will reboot.

o/p from manual :

NAME
       shutdown - Halt, power-off or reboot the machine

SYNOPSIS
       shutdown [OPTIONS...] [TIME] [WALL...]

DESCRIPTION
       shutdown may be used to halt, power-off or reboot the machine.

       The first argument may be a time string (which is usually "now").
       Optionally, this may be followed by a wall message to be sent to all
       logged-in users before going down.

       The time string may either be in the format "hh:mm" for hour/minutes
       specifying the time to execute the shutdown at, specified in 24h clock
       format. Alternatively it may be in the syntax "+m" referring to the
       specified number of minutes m from now.  "now" is an alias for "+0",
       i.e. for triggering an immediate shutdown. If no time argument is
       specified, "+1" is implied.

       Note that to specify a wall message you must specify a time argument,
       too.

       If the time argument is used, 5 minutes before the system goes down the
       /run/nologin file is created to ensure that further logins shall not be
       allowed.

OPTIONS
       The following options are understood:

       --help
           Print a short help text and exit.

       -H, --halt
           Halt the machine.

       -P, --poweroff
           Power-off the machine (the default).

       -r, --reboot
           Reboot the machine.

       -h
           Equivalent to --poweroff, unless --halt is specified.

       -k
           Do not halt, power-off, reboot, just write wall message.

       --no-wall
           Do not send wall message before halt, power-off, reboot.

       -c
           Cancel a pending shutdown. This may be used cancel the effect of an
           invocation of shutdown with a time argument that is not "+0" or
           "now".


AND NEVER USE THE POWER BUTTON - short of it being on fire.

Usage of shutdown may require use of sudo / root access.


Vince

--- Mageia Linux v6 X64/Mbse v1.0.7.11/GoldED+/LNX 1.1.501-b20150715