Is there a way to setting new daily wallpaper automatically everyday without restart linux?

[guirahy]

Is there a way to setting new daily wallpaper automatically everyday without restart linux?
I use Ubuntu 24.04.

[hifron]

00 09 * * 1-7 env XDG_RUNTIME_DIR=/run/user/1000 bing-wall

in crontab -e each day at 9:00 but you need to close it afterwards. maybe need to use /snap/bin/bing-wall

[ivanjx]

@hifron that env does not work for me. i had to copy my entire env into the crontab file to make it work. not sure which one is really making it works.

[keshavbhatt]

00 09 * * 1-7 env XDG_RUNTIME_DIR=/run/user/1000 bing-wall

in crontab -e each day at 9:00 but you need to close it afterwards. maybe need to use /snap/bin/bing-wall

You can use bing-wall --set
This will download and set the wallpaper and close the app automatically.

[ivanjx]

@keshavbhatt do you know exactly which environment variables are required to make it able to run from inside crontab?

[keshavbhatt]

@keshavbhatt do you know exactly which environment variables are required to make it able to run from inside crontab?

I dont know why we need env variables. The app executable should be callable directly.
Otherwise try to run using full path like
/snap/bin/bing-wall --set or snap run bing-wall --set

[ivanjx]

@keshavbhatt according to this it is DBUS_SESSION_BUS_ADDRESS that is required by the gsettings program to be able to run properly from crontab.

edit: im using wayland.

[ivanjx]

fix:

#!/bin/bash

export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
export QT_QPA_PLATFORM=offscreen

/snap/bin/bing-wall --set

to test:
env -i thescript.sh

note: env -i resets the environment variable supplied by the gui terminal so it acts like crontab environment instead.

[hifron]

If there is some script to delete old wallpapers in bash/powershell, it needs non-gui part of user and maybe it won't work, but not tested this way from crontab.