can zsh detect return from hibernation?

can zsh detect return from hibernation?

[Ray Andrews]

Of course it's not really a zsh issue, but when my machine returns from 
hibernation it always spins up all disks.  System level things can spin 
themdown, but on thaw, I'm back to my xfce4 desktop and xfce4 is the 
culprit spinning up the disks.  It seems that there's no way of getting 
xfce4 to reset the spindown, so I'm wondering if zsh can detect that 
it's resumed from hibernationso that I can add something to zshrc to 
perform "hdparm -y /dev/sdb" but only the one time that it's needed. 
It's hardly a big problem but I'd not be surprised if zsh can handle it.

Re: can zsh detect return from hibernation?

[Daniel Shahaf]

Ray Andrews wrote on Tue, 06 Mar 2018 12:41 -0800:
> Of course it's not really a zsh issue, but when my machine returns from 
> hibernation it always spins up all disks.  System level things can spin 
> themdown, but on thaw, I'm back to my xfce4 desktop and xfce4 is the 
> culprit spinning up the disks.  It seems that there's no way of getting 
> xfce4 to reset the spindown, so I'm wondering if zsh can detect that 
> it's resumed from hibernationso that I can add something to zshrc to 
> perform "hdparm -y /dev/sdb" but only the one time that it's needed. 
> It's hardly a big problem but I'd not be surprised if zsh can handle it.

Ever heard the saying, "When your tool is hammer, every problem looks
like a nail"?

There's no reason zsh needs to be part of the solution.

I would advise you to try and fix the problem at the source (xfce), and
failing that, to look into your OS's support for post-hibernate hooks.

Good luck.

Re: can zsh detect return from hibernation?

[Ray Andrews]

On 09/03/18 03:14 AM, Daniel Shahaf wrote:
> I would advise you to try and fix the problem at the source (xfce), and
> failing that, to look into your OS's support for post-hibernate hooks.
>
> Good luck.
>
Zsh can do some things that are quite astonishing, irrespective of where 
the problem arises, so I thought  I'd ask.  It might have been the case 
that she'd be able to detect that the lights have been out, perhaps by 
noticing that the time has changed since she last checked, or something 
like that.  As for Debian, I've seen half a dozen ideas, none of which 
work.  No one really knows.  I learned not too long ago that zsh can 
detect the activation of a terminal (via movement of the mouse) so it 
was not a stretch to think that she might be able to detect even return 
from suspend or hibernation.   No foul if she can't of course, but most 
cool if she could.  Meanwhile I have to type:

$ hdparm -y /dev/sdb

... which isn't exactly onerous ;-)