adb logcat

Dump a log of system messages. More information: https://developer.android.com/tools/logcat.

• Display system logs:

adb logcat

• Display lines that match a regular [e]xpression:

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