Shutdown 'now' works but any time delay specified does not shutdown, this is on CentOS 7.

Fails - well it appears to work in that it reports

Shutdown scheduled for ...

but the shutdown never happens.

Also fails.

butworks fine.

Any idea why a time delay does seem to work?

Did you read the man page for shutdown?

Your posted command is an absolute time vs a delay.

waits for 1 hour (60 min) and shuts it down

Forgot to type +1/+0 in the examples, now corrected.

I don't think i have tried using a delay with ver 7 and don't have access to a system at the moment. Nothing popped up in a search either.

Interesting solution which would work except for...

In this case I am running the shutdown command remotely from a Shutdown script on a Windows server using plink. The one minute delay before it returns causes 'Shutdown Script failed'.

I'd put these commands into script that located (and runs) at linux side instead of trying to run Linux command at windows side.

Not sure I explained clearly:
Does not work even if run directly on the CentOS 7 machine.

I'm running a basic CentOS 7 installation in virtualbox without a desktop and the shutdown command works as expected i.e.

shutdown --poweroff +1
or
shutdown -h +1

So something is different about your system.

Thanks for testing that michaelk, as that is the case I have been looking at what is specific to my system.

Looks like a user account issue, issue command as root and works ok but as any other user and the timer fails. Also now noticed when shutdown issued by root the broadcast message is displayed in terminal:
but when issued by any other user this is not displayed.

Edit:
Don't know which but it is beginning to look like users need to be part of some particular user group to allow shutdown {time} to work, any thoughts which group this might be?

Does /sbin/shutdown call some other module to do the time delay? If so this is just as if non-root users do not have permissions to call that delay module.

I should have mentioned that in order to get basic shutdown working with non-root users:
Is there some other module which needs 'chmod +s' to make this work.

Just to be sure: did you run commands with sudo or su?
To be able to run su/sudo you have to be at wheel group.

Commands issued from a terminal, either as native user or after su to root. All users are members of the wheel group.

Edit:
For a test just tried but can't run sudo remotely, error is: sudo: sorry, you must have a tty to run sudo

Add the -t option i.e.

plink -t user@server_name "your shutdown command"

1 members found this post helpful.

Works perfectly, thanks.