how to know using X11 the percentage of battery level ?
To monitor the battery level using X11, you can use tools such as `acpi`, `upower`, or access the information directly from the `/sys/class/power_supply` directory. Here's a brief overview of how to get the battery level using these methods: 1. **Using `acpi`**: The `acpi` utility provides information about the battery status. To check the battery percentage, you can run: ```bash acpi -b ``` This command will display battery status, including the charge percentage. 2. **Using `upower`**: `upower` is another utility that provides information about power devices, including batteries. To check the battery percentage: ```bash upower -i /org/freedesktop/UPower/devices/battery_BAT0 ``` Replace `/org/freedesktop/UPower/devices/battery_BAT0` with the appropriate path for your system if needed. 3. **Directly from `/sys/class/power_supply`**: You can access battery status information directly from the `/sys/class/power_supply` directory. The battery informati