ADBLogsSafe

adb logcat

Stream live Android system logs

What It Does

Streams continuous real-time diagnostic output from the Android log ring buffer.

Command Syntax

Terminal

$adb logcat [options] [filterspecs]

Parameters & Placeholders Breakdown

This command syntax includes specific placeholder tokens. Below is an explanation of what each word represents and concrete real-world values to replace it with:

[options]Command Flags / Optional Arguments

Optional command flags that modify behavior, such as "-r" to reinstall or "-d" to allow downgrade.

Real-world value:-r -g

Command syntax: adb install -r -g app.apk

[filterspecs]FILTERSPECS Parameter

Replace this placeholder with your specific filterspecs value.

Real-world value:your-filterspecs

Command syntax: adb logcat [options] your-filterspecs

Usage Examples

$adb logcat

$adb logcat -v time

$adb logcat *:E

$adb logcat -s ActivityManager:I MyAppTag:D

Options & Flags

Flag / Parameter	Description
-v <format>	Sets log message formatting (brief, process, tag, raw, time, threadtime).
-s	Sets default filter to silent so only explicitly specified tags print.
-d	Dump current buffer to stdout and exit without streaming.
-c	Clear (flush) log ring buffers and exit.

Prerequisites & Requirements

Device connected

Related Commands

adb logcat -c

Clear log ring buffers

adb logcat *:E

Filter logcat for error logs only

adb logcat -d > log.txt

Export logs snapshot to local text file

Found an error or missing flag for adb logcat?

Submit a correction or request additional examples on GitHub.

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