ubuntu磁盘空间清理

查看内核版本：

root@jack-VirtualBox:~/# uname -a
Linux jack-VirtualBox 5.11.0-37-generic #41~20.04.2-Ubuntu SMP Fri Sep 24 09:06:38 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
root@jack-VirtualBox:~/#

查看安装的内核：

root@jack-VirtualBox:~/# dpkg --get-selections|grep linux
binutils-x86-64-linux-gnu			install
console-setup-linux				install
libselinux1:amd64				install
linux-base					install
linux-firmware					install
linux-generic-hwe-20.04				install
linux-headers-5.11.0-37-generic			<