adb logcat

Dump a log of system messages. More information: https://developer.android.com/studio/command-line/logcat.

• Display system logs:
  adb logcat
• Display lines that match a regular expression:
  adb logcat -e {{regular_expression}}
• Display logs for a tag in a specific mode ([V]erbose, [D]ebug, [I]nfo, [W]arning, [E]rror, [F]atal, [S]ilent), filtering other tags:
  adb logcat {{tag}}:{{mode}} *:S
• Display logs for React Native applications in [V]erbose mode [S]ilencing other tags:
  adb logcat ReactNative:V ReactNativeJS:V *:S
• Display logs for all tags with priority level [W]arning and higher:
  adb logcat *:W
• Display logs for a specific PID:
  adb logcat --pid={{pid}}
• Display logs for the process of a specific package:
  adb logcat --pid=$(adb shell pidof -s {{package}})
• Color the log (usually use with filters):
  adb logcat -v color