- ram_perc (ram usage in percent) [argument: NULL]
- ram_total (ram usage in percent) [argument: NULL]
- ram_used (ram usage in percent) [argument: NULL]
+- run_command (run custom shell command) [argument: command]
- temp (temperature in degrees) [argument: temperature file]
- uid (uid of current user) [argument: NULL]
- username (username of current user) [argument: NULL]