ubuntu18.04的libssl包。apt update报错Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. Could not handshake: Error in the certificate verification.时可能用到

Ubuntu更新内核所需文件

ubuntu16.04升级内核时需要该文件，libssl1.1_1.1.0g-2ubuntu4.1_amd64.deb,亲测能用。