扫描 检查一个或多个X509 PEM证书的单个文件或目录,并显示证书详细信息。 用法 ./pem-scan.py -h usage: pem-scan.py [-h] [-e EXPIRES] [-d] [-v] [-V] filename Script description positional arguments: filename file or directory containing onw or more x509 certificates in PEM format optional arguments: -h, --help show this help message and exit -e EXPIRES, --expires EXPIRES check if