Manjaro21.0下KDE5桌面设置桌面壁纸

#!/bin/bash

location="/home/xxx/..."        # 壁纸目录路径
wallpaper="23.jpg"              # 壁纸名称

qdbus org.kde.plasmashell /PlasmaShell org.kde.PlasmaShell.evaluateScript '
    var allDesktops = desktops();
    print (allDesktops);
    for (i=0;i<allDesktops.length;i++) {{
        d = allDesktops[i];
        d.wallpaperPlugin = "org.kde.image";
        d.currentConfigGroup = Array("Wallpaper",
                                     "org.kde.image",
                                     "General");
        d.writeConfig("Image", "file://'$location'/'${wallpaper}'")
    }}
' 

while true; do
    sleeptime=900                       # 壁纸循环间隔时间（单位：秒）
    location="/home/xxx/..."            # 壁纸目录路径

    array=($(ls $location*))            # 数组变量
    # ( IFS=$'\n'; echo "${array[*]}" )   # 显示壁纸目录路径下所有的壁纸（用于调试）

    size=${#array[@]}
    index=$(($RANDOM % $size))          # 生成随机数
    wallpaper=${array[$index]}          # 随机索引

    echo 
    echo "当前桌面使用的壁纸是："$wallpaper

    dbus-send --session --dest=org.kde.plasmashell --type=method_call /PlasmaShell org.kde.PlasmaShell.evaluateScript 'string:
    var Desktops = desktops();                                                                                                                       
    for (i=0;i<Desktops.length;i++) {
            d = Desktops[i];
            d.wallpaperPlugin = "org.kde.image";
            d.currentConfigGroup = Array("Wallpaper",
                                        "org.kde.image",
                                        "General");
            d.writeConfig("Image", "file://'$location'/'${wallpaper}'");
    }'
    sleep $sleeptime
done