Set random wallpaper with given folders

wallpaper.sh

feh --bg-fill "$(find /landscape/images/path/ -regextype posix-extended -regex '.*\.(png|jpg|jpeg)$' -print0 |shuf -z -n 1)" "$(find /portrait/images/path/ -regextype posix-extended -regex '.*\.(png|jpg|jpeg)$' -print0 |shuf -z -n 1)"

Here is a one-liner that should do what you're asking:

find /path/to/directory -type f -exec convert {} -resize 1920x1080! {} ;

This will find all files in the directory specified by /path/to/directory, and for each file it will run the convert command to resize the image to 1920x1080 pixels, using the ! flag to overwrite the original image file.

Note that this command assumes that you have the convert command installed on your system. This command is part of the imagemagick package, which you can install using the following command:

sudo pacman -S imagemagick

I hope this helps! Let me know if you have any questions or if you need further assistance.