On 09/16/2015 02:06 PM, Ranjan Maitra wrote:
On Wed, 16 Sep 2015 11:05:36 -0800 Antonio Olivares <wingators@xxxxxxxxx> wrote:
-----Original Message-----
From: maitra.mbox.ignored@xxxxxxxxx
Sent: Tue, 15 Sep 2015 20:12:22 -0500
To: users@xxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: shutdown machine from crontab
Hi,
Can you try:
systemctl poweroff
instead of /usr/bin/poweroff and see if that works?
Many thanks and best wishes,
Ranjan
Ranjan,
Tried it and it does not poweroff machine via crontab. However, from
$ systemctl poweroff
does poweroff machine. What could be preventing it from shutting down. I will try the -f option suggested also, then report back.
Best Regards,
Sorry, I do not have any idea: you could try /usr/bin/systemctl poweroff but this is just a random stab...
I'm pretty sure this is caused by the fact that crontab entries don't
have a console associated with them and systemctl wants to spit stuff
out to stdout. You could try redirecting stdout and stderr in your cron
entry:
systemctl poweroff >/dev/null 2>&1
or possibly launch systemctl in a screen session:
screen -S "sysshutdown" -d -m systemctl poweroff
The first MAY work (dunno if systemctl is that picky). The second would
run it in a screen session so it would have a stdin, stdout and stderr.
That is assuming you have screen installed (and why wouldn't you?). If
it failed you could "screen -r" and see what error systemctl is
spitting out.
This is just a guess.
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