删除ubuntu旧内核的方法

https://www.jianshu.com/p/75edb9a5fbab

磁盘满了 需要清理系统盘

1，先用uname -a 查看当前内核版本:

   uname -a

  Linux 10-9-37-135 3.13.0-110-generic #157-Ubuntu SMP Mon Feb 20 11:54:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

 版本是3.13.0-110

2，看一下当前系统安装的内核版本:

    dpkg --get-selections|grep linux libselinux1:amd64 install linux-firmware install linux-generic install linux-headers-3.13.0-100 install linux-headers-3.13.0-100-generic install linux-headers-3.13.0-101 install linux-headers-3.13.0-101-generic install linux-headers-3.13.0-103 install linux-headers-3.13.0-103-generic install linux-headers-3.13.0-105 install linux-headers-3.13.0-105-generic install linux-headers-3.13.0-106 install linux-headers-3.13.0-106-generic install linux-headers-3.13.0-107 install linux-headers-3.13.0-107-generic install linux-headers-3.13.0-108 install linux-headers-3.13.0-108-generic install linux-headers-3.13.0-109 install linux-headers-3.13.0-109-generic install linux-headers-3.13.0-110 install linux-headers-3.13.0-110-generic install linux-headers-3.13.0-63 install linux-headers-3.13.0-63-generic install linux-headers-3.13.0-68 install linux-headers-3.13.0-68-generic install linux-headers-3.13.0-71 install linux-headers-3.13.0-71-generic install linux-headers-3.13.0-74 install linux-headers-3.13.0-74-generic install linux-headers-3.13.0-76 install linux-headers-3.13.0-76-generic install linux-headers-3.13.0-77 install linux-image-3.13.0-100-generic install linux-image-3.13.0-101-generic install linux-image-3.13.0-103-generic install linux-image-3.13.0-105-generic install linux-image-3.13.0-106-generic install linux-image-3.13.0-107-generic install linux-image-3.13.0-108-generic install linux-image-3.13.0-109-generic install linux-image-3.13.0-110-generic install linux-image-3.13.0-24-generic deinstall linux-image-3.13.0-63-generic install linux-image-3.13.0-68-generic install linux-image-3.13.0-71-generic install linux-image-3.13.0-74-generic install linux-image-3.13.0-76-generic install linux-image-3.13.0-77-generic install linux-image-extra-3.13.0-100-generic install linux-image-extra-3.13.0-101-generic install linux-image-extra-3.13.0-103-generic install linux-image-extra-3.13.0-105-generic install linux-image-extra-3.13.0-106-generic install linux-image-extra-3.13.0-107-generic install linux-image-extra-3.13.0-108-generic install linux-image-extra-3.13.0-109-generic install linux-image-extra-3.13.0-110-generic install linux-image-extra-3.13.0-24-generic deinstall linux-image-extra-3.13.0-63-generic install linux-image-extra-3.13.0-68-generic install linux-image-extra-3.13.0-71-generic install linux-image-extra-3.13.0-74-generic install linux-image-extra-3.13.0-76-generic install linux-image-extra-3.13.0-77-generic install linux-image-generic install linux-libc-dev:amd64 install pptp-linux install util-linux install 

太惊人了 竟然这么多 主要是年头长，然后把不需要的都删除就行

3，删除多余的内核

上面linux-headers、linux-image、linux-signed开头的都是跟内核相关的.带有版本号的(如linux-image-extra-3.13.0-63-generic)才是可以删除的.注意不要删除当前使用的版本.

sudo apt-get purge来删除

sudo apt-get purge linux-image-extra-3.13.0-63-generic
sudo apt-get purge linux-signed-image-3.13.0-63-generic
sudo apt-get purge linux-headers-3.13.0-63(这个会自动把linux-headers-3.13.0-63-generic删除) 

注意

不要使用sudo apt-get remove来删除,会出现linux-signed-image-3.13.0-63-generic deinstall

4，使用sudo update-grub更新启动菜单

小结

内核占用系统盘内存比较大 /usr/src 虽然只有2.5G 但是实际清理完会有7个多G

作者：yes先生boss
链接：https://www.jianshu.com/p/75edb9a5fbab
来源：简书