Any issues with changing template for sys-usb?

[Stumpy]

I have a sys-usb that is currently based on fedora but i need to run a
package on debian.
Should it be a problem if i install the package on debian, temporarily
switch the template to debian, use the app when i need, then switch back?

[awokd]

Stumpy wrote on 6/8/19 1:18 PM:

Shouldn't be a problem, but you could also just leave it on Debian.

[Stumpy]

Thanks, will give it a try then

[Jon deps]

just messes up your app shortcuts, then one has to fix them if one
uses them ; course you can just use qvm-run

what is the application?

[jules....@gmail.com]

I wanted to do the same to move the template sys-usb was based on, but you need to stop sys-usb to do it which in the case of a Deskop computer make you without keyboard and mousse ...

[awokd]

jules....@gmail.com:

You could temporarily remove rd.qubes.hide_all_usb from your xen.cfg.
This exposes dom0 to your USB controllers, so unplug everything except
keyboard & mouse. Reboot, and verify you have keyboard after shutting
down sys-usb. Make the changes you need and verify sys-usb starts
normally. Add rd.qubes.hide_all_usb back to xen.cfg.

I believe the above is relatively low risk, anyone have a better
approach? You could also script the template change, but I wouldn't be
confident enough to attempt it...

[unman]

How about?

#!/bin/bash
qvm-shutdown sys-usb
qvm-prefs sys-usb template debian-9
qvm-start sys-usb
sleep 3m
qvm-shutdown sys-usb
qvm-prefs sys-usb template fedora-30
qvm-start sys-usb

Just long enough to check all works fine and then switches back.
If all's fine, delete the last 4 lines.

If worried about races, pepper in a few more sleeps.

[scurge1tl]

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unman:

Nice one. Where should I normally put the #!/bin/bash scripts in dom0?
Is it ok to use /usr/bin or is it better to leave it for
package-managed executables and have an another /bin?
Thank you.

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[awokd]

scurge1tl:

> Nice one. Where should I normally put the #!/bin/bash scripts in dom0?
> Is it ok to use /usr/bin or is it better to leave it for
> package-managed executables and have an another /bin?
> Thank you.

I put dom0 user scripts in ~. The #!/bin/bash at the top is a directive
for what shell the script should use when it executes.