- battery_power (battery power usage) [argument: battery name]
- battery_state (battery charging state) [argument: battery name]
- cpu_perc (cpu usage in percent) [argument: NULL]
+- cpu_freq (cpu frequency) [argument: NULL]
- datetime (date and time) [argument: format]
- disk_free (free disk space in GB) [argument: mountpoint]
- disk_perc (disk usage in percent) [argument: mountpoint]