dumpsys

Provide information about Android system services. This command can only be used through adb shell. More information: https://developer.android.com/studio/command-line/dumpsys.

• Get diagnostic output for all system services:
  dumpsys
• Get diagnostic output for a specific system service:
  dumpsys {{service}}
• List all services dumpsys can give information about:
  dumpsys -l
• List service-specific arguments for a service:
  dumpsys {{service}} -h
• Exclude a specific service from the diagnostic output:
  dumpsys --skip {{service}}
• Specify a timeout period in seconds (defaults to 10s):
  dumpsys -t {{8}}