Visualizzare lo stato della batteria da terminale in Linux

Ho trovato due programmi distinti che ci permettono di controllare lo stato della batteria in Linux:

• acpi
• upower

Sulla mia Debian 11 con XFCE il secondo era già installato.

Ma se vogliamo essere sicuri:

# aptitude install upower acpi

Vediamo un esempio per ciascuno partendo da acpi:

$ acpi -V
Battery 0: Discharging, 42%, 02:16:14 remaining
Battery 0: design capacity 6666 mAh, last full capacity 5104 mAh = 76%
Adapter 0: off-line
Thermal 0: ok, 29.8 degrees C
Thermal 0: trip point 0 switches to mode critical at temperature 119.0 degrees C
Thermal 1: ok, 27.8 degrees C
Thermal 1: trip point 0 switches to mode critical at temperature 119.0 degrees C
Thermal 1: trip point 1 switches to mode active at temperature 71.0 degrees C
Thermal 1: trip point 2 switches to mode active at temperature 55.0 degrees C
Thermal 1: trip point 3 switches to mode active at temperature 50.0 degrees C
Thermal 1: trip point 4 switches to mode active at temperature 45.0 degrees C
Cooling 0: Processor 0 of 3
Cooling 1: SEN2 no state information available
Cooling 2: Processor 0 of 3
Cooling 3: B0D4 no state information available
Cooling 4: Processor 0 of 3
Cooling 5: iwlwifi_1 no state information available
Cooling 6: Fan 0 of 1
Cooling 7: Fan 0 of 1
Cooling 8: Processor 0 of 3
Cooling 9: Fan 0 of 1
Cooling 10: Processor 0 of 3
Cooling 11: SEN1 no state information available
Cooling 12: Processor 0 of 3
Cooling 13: pch_skylake no state information available
Cooling 14: Processor 0 of 3
Cooling 15: x86_pkg_temp no state information available
Cooling 16: Fan 0 of 1
Cooling 17: Fan 0 of 1
Cooling 18: Processor 0 of 3
Cooling 19: INT3400 Thermal no state information available
Cooling 20: intel_powerclamp no state information available

Con l'opzione -V gli ho indicato di visualizzare tutto.

Invece upower funziona in maniera un pò diversa:

$ upower -i `upower -e | grep 'BAT'`
  native-path:          BAT0
  vendor:               SDI
  model:                Dell
  serial:               50301
  power supply:         yes
  updated:              mer 27 ott 2021, 15:57:38 (107 seconds ago)
  has history:          yes
  has statistics:       yes
  battery
    present:             yes
    rechargeable:        yes
    state:               discharging
    warning-level:       none
    energy:              23,6763 Wh
    energy-empty:        0 Wh
    energy-full:         56,6544 Wh
    energy-full-design:  73,9926 Wh
    energy-rate:         9,9234 W
    voltage:             11,204 V
    time to empty:       2,4 hours
    percentage:          41%
    capacity:            76,5677%
    technology:          lithium-ion
    icon-name:          'battery-good-symbolic'
  History (charge):
    1635343058	41,000	discharging
  History (rate):
    1635343058	9,923	discharging

Enjoy!