1.查看内核版本
    root@ubuntu:~# sudo dpkg —get-selections |grep linux-image
    linux-image-4.15.0-169-generic install
    linux-image-4.15.0-171-generic install
    linux-image-generic install
    root@ubuntu:~# cat /proc/version
    Linux version 4.15.0-169-generic (buildd@lcy02-amd64-015) (gcc version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)) #177-Ubuntu SMP Thu Feb 3 10:50:38 UTC 2022

    2.固定内核版本
    root@ubuntu:~# apt-mark hold linux-image-4.15.0-169-generic