Download ADB Logs

adb-logger.sh

#!/bin/bash

echo "Usage: adb-logger <device ip:port> <file path with name>"
echo "Example: ./adb-logger 192.168.0.237:5555 ./device-logs/192.168.0.237"

waittime=60
device=$1

while :
do	
    timestamp=$(date +%F_%H-%M)
        
    if adb connect $1 | grep -q 'connected'; then
        echo "**** ${timestamp}|${device}|Connected ****"
        adb -s $1 logcat -G 16M
	    adb -s $1 logcat -b all -d > $2-tmp

        if [ $? -eq 0 ]; then
            filesize=$(wc -c $2-tmp | awk '{print $1}')
            echo "Log file size, ${filesize}"                        

            if [ "`head -n 2 $2-tmp`" == "`head -n 2 $2`" ]; then
                mv $2-tmp $2                
            else 
                echo "Change in file size. Keeping last file as snapshot"
                mv $2 $2-$(date +%F_%H-%M)
                mv $2-tmp $2
            fi
            echo "Logs downloaded successfully."
        fi
    else
        echo "**** ${timestamp}|${device}|Failed to Connect ****"
    fi
    
    sleep $waittime
done

This line may have a performance impact on the Android device, due to an increase in the overall log buffer size.

adb -s $1 logcat -G 16M