tldr/pages/common/adb-logcat.md

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# 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`
- Color the log (usually use with filters):
`adb logcat -v color`