Python script for parallel execution of ADB commands on all connected devices.

adb+

#!/usr/bin/env python3
from subprocess import run, PIPE, Popen
from multiprocessing.pool import Pool
from itertools import repeat
from sys import argv
import shlex

def _run_adb(device: str, args: list) -> None:
    cmd = ' '.join(['adb', '-s {}'.format(device)] + args)
    print(cmd)
    run(shlex.split(cmd), stdout=None, encoding='utf-8')

def parallel_adb(args: list) -> None:
    adb_devices = run(['adb', 'devices'], stdout=PIPE, encoding='utf-8')
    devices = list()

    for line in adb_devices.stdout.splitlines():
        elems = line.split('\t')
        if elems[-1] != 'device':
            continue

        devices.append(elems[0])
    
    with Pool(len(devices)) as pool:
        pool.starmap(
            _run_adb, zip(devices, repeat(args))
        )

if __name__ == '__main__':
    if len(argv) < 2:
        exit(0)

    parallel_adb(argv[1:])