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How to start bitcoin-qt from cron

Moussa by Moussa
August 1, 2025
in Bitcoin
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peer discovery – how to obtain the IP addresses of nodes for mining pools?
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I have this problem that my bitcoin-qt crashes at random times as I have reported in my other question (bitcoin-qt just terminates after an hour without big fanfare).
The situation has improved after installing v29.0.0 so that I have hope that I will b able to catch up with the blockchain (three and a half years back now.)
To make things faster I now check in a cron script if bitcoin-qt has died and try to restart it in that was the case.
But ubuntu is throwing me a curveball: Starting this QT application from a cron script is not easy!
I am getting the following error:

qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin “xcb” in “” even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may f>
Available platform plugins are: minimal, xcb.

I did set the DISPLAY variable in my cron file and have confirmed that it is set when bitcoin-qt is starting.
I am running out of linux-steam and hope there is somebody out there with some more.
Cheers,
Merlin



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