怎样使用Python实现基于主机的入侵检测系统

import subprocess
import time

def check_process(process_name):
    # 检查进程会不会正在运行
    cmd = 'ps aux | grep ' + process_name + ' | grep -v grep'
    p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    out, err = p.communicate()
    if out:
        return True
    else:
        return False

def main():
    # 监控进程名
    process_name = "pidancode"

    while True:
        time.sleep(5)
        if not check_process(process_name):
            print("进程已停止！")
            # 这里可以添加其他告警操作，比如通过邮件或短信通知管理员等。

if __name__ == '__main__':
    main()