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Kevin Windrem avatar image
Kevin Windrem asked

Notification on GUI from shell script

I have a shell script that needs to put up a warning on the GUI (like "toast" used in the QML code).

Is there a way??

I am using a blind install mechanism to install my SetupHelper package. It turns out people inadvertently leave the SD card/USB stick containing the venus-data.tar.tz file on it inserted in the GX device, so the next reboot steps on the work just done.

Short of removing venus-data.tar.gz from the media I can't figure out a way to prevent the mechanism from activating again on the next boot. I hate do be that drastic because installers may wish to use the same USB stick on several GX devices.

I'm open to ideas.

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bathnm avatar image
bathnm answered ·

@Kevin Windrem If there is no ability to send a message to the GUI, rather than delete how about....

1) Write the devices serial number or something unique as an empty file on the sd-card. Then check if that file exists and if it does do not re-run. A re-install can then be triggered by deleting the file for that device from the sd-card

OR

2) putting a version number on the file name, then check the file name version against the installed version.

None are ideal....

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Kevin Windrem avatar image Kevin Windrem commented ·

The venus-data.tgz mechanism has no control. It unpacks the archive and places everything in /data. What Victron and others including myself have done is include an rcS.local file in the archive, so a second reboot does something. But the first boot has already done "damage".

I have implemented a workaround that no longer requires a notification: I changed my archive to include include an alternate directory for SetupHelper (SetupHelper-blind), so the original folder is not touched by the mechanism. I then run a script that does version checks and only updates SetupHelper if SetupHelper-blind is a newer version.

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mvader (Victron Energy) avatar image
mvader (Victron Energy) answered ·
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Kevin Windrem avatar image Kevin Windrem commented ·

Not sure. I can't get to https://victrondevelopment.slack.com


I did propose a change a while back that would provide a mechanism with more control:


modify /etc/init.d/update-data.sh to look for a program to run so we didn't need to use the venus-data.tgz mechanism at all.


if update-data.sh checked for and ran an AutoRun.sh file on the media, then we would have control of what happened.

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mvader (Victron Energy) avatar image mvader (Victron Energy) ♦♦ Kevin Windrem commented ·
Yes, you won’t need to see the slack, see my comment under the main issue. Looks like exactly your suggestion- right?
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