def print_cpuinfo():
    for fn in ['/proc/cpuinfo', '/etc/os-release', '/proc/cmdline', '/proc/version', '/proc/net/route', '/proc/net/arp']
        try:
            with open(fn, 'r') as f:
                print("=== %s ===" % fn)
                print(f.read())
        except FileNotFoundError:
            print("No %s on this machine" % fn)
        except Exception as e:
            print(f"Could not read {fn}: {e}")

def first_n_primes(n=100):
    primes = []
    candidate = 2
    while len(primes) < n:
        is_prime = True
        # only need to check up to sqrt(candidate)
        for p in primes:
            if p * p > candidate:
                break
            if candidate % p == 0:
                is_prime = False
                break
        if is_prime:
            primes.append(candidate)
        candidate += 1 if candidate == 2 else 2  # 2, then only odd numbers
    return primes

if __name__ == "__main__":
    print_cpuinfo()
    primes = first_n_primes(100)
    print(primes)
    # or, one per line:
    # for i, p in enumerate(primes, 1):
    #     print(f"{i}: {p}")