[Bglug] Halt and poweroff

[Bob Jonkman]

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The invocation that's always worked for me is

shutdown -h -P

which halts and powers off.

And then I discovered "poweroff" which is much easier to type and
remember.

But /sbin/poweroff just seems to be a soft link to /bin/systemctl
There must be some command line detection in systemctl to determine
how it was invoked, and then to take different actions depending on
the command used.

- --Bob.



- --
Bob Jonkman <bjonkman at sobac.com>          Phone: +1-519-635-9413
SOBAC Microcomputer Services             http://sobac.com/sobac/
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On 2016-07-09 11:10 PM, Andrew Howlett wrote:
> i checked the linux standard base core specification for the
> shutdown command
> 
> actually it says on page 393 that for the shutdown -h (halt) option
> "actions after halting are unspecified (e.g. power off)"
> 
> 
>> On 9 Jul 2016, at 9:32 PM, LP <linuxpusher2 at gmail.com> wrote:
>> 
>> " it is systemd correctly implementing the commands"
>> 
>> What does that mean about the commands we have been using ? Is
>> there a place to compare the commands ?
>> 
>> 
>> 
>> 
>> On 9 July 2016 at 16:31, LP <linuxpusher2 at gmail.com
>> <mailto:linuxpusher2 at gmail.com>> wrote: I use to use "sudo
>> shutdown", now it gives the response "use shutdown --help". "sudo
>> poweroff" , works. How many other commands that I thought I knew
>> have changed I wonder.
>> 
>> 
>> 
>> 
>> On 9 July 2016 at 11:44, Andrew Howlett <andrew at howlett.net
>> <mailto:andrew at howlett.net>> wrote: Hi guys
>> 
>> I always use the halt command (sudo halt for ubuntu people) to
>> turn off my box. Recently I noticed that halt stops the linux
>> kernel but won't turn off the power. I thought maybe it's a ACPI
>> problem. But no, actually it is systemd correctly implementing
>> the commands. Halt closes the system but leaves it powered up.
>> Poweroff or shutdown close and power off the system.
>> 
>> Sent from my phone.
>> 
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> 
> 
> 
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