termux-location                    # default (GPS if available)
termux-location -p gps             # GPS only (more accurate, slower)
termux-location -p network         # Network only (faster, less accurate)
termux-location -p passive         # Last known location (instant)

termux-location -r once

termux-location -r updates         # keep updating until killed

{
  "latitude": 37.7749,
  "longitude": -122.4194,
  "altitude": 10.0,
  "accuracy": 20.0,
  "bearing": 0.0,
  "speed": 0.0,
  "provider": "gps"
}