adb-logcat
Dump a log of system messages.
TLDR
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
