Linux 删除kernel

Ubuntu

1. 查看安装kernel

dpkg -l | grep linux-headers
dpkg -l | grep linux-image

2. 删除kernel

sudo apt-get purge linux-image
sudo apt-get purge linux-headers

3. 更新grub启动项

sudo update-grub

手动删除

rm -rf  /lib/modules/kernel-version
rm -rf /usr/src/linux-headers-kernel-version
rm -rf  /boot/*kernel-version*
rm -rf /var/lib/dpkg/info/linux-headers-kernel-version*
	

Centos

1. 查看kernel

rpm -qa | grep kernel
# rpm -q kernel

2. 删除kernel

yum remove kernel-(kernel version)
yum remove kernel-core-(kernel version)

3. 删除未使用的kernel

dnf remove --oldinstallonly