import random
import string
import subprocess

def run_successfull_cmd(command):
    command = command.split()
    output = subprocess.run(command, capture_output=True, encoding='UTF-8')
    assert output.returncode == 0
    return output.stdout

def gen_rand_name(max_name_len):
    name_len = random.randint(3, max_name_len)
    return ''.join(random.choice(string.ascii_letters) for x in range(name_len))

def check_log_string(log_file, search_str):
    lines = ''
    with open(log_file, 'r') as my_log:
        lines = my_log.readlines()
        for line in lines:
            if search_str in line:
                return True

    print(lines)
    return False