从 /boot 中删除旧的 vmlinuz.* 文件是否安全

Question

在/boot有很多的vmlinuz.*文件可以追溯到4年。删除其中一些是否安全？

编辑：大多数似乎都有congig-3.*和System.map.*文件一起去。我可能也想摆脱那些？或者相反？

Answer 1

如果您运行以下命令，它们将被自动删除：

sudo apt-get autoremove

更新：我找到了一个虚拟机，几周内我没有运行这些命令。这是输出，显示autoremove清理 /boot 中的文件，大小从 127M 减小到 96M：

stephane@steph-dev-vm ~> du -hs /boot/
127M    /boot/

stephane@steph-dev-vm ~> sudo apt-get install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  linux-headers-3.16.0-30 linux-headers-3.16.0-30-generic linux-image-3.16.0-30-generic
  linux-image-extra-3.16.0-30-generic
Use 'apt-get autoremove' to remove them.

stephane@steph-dev-vm ~> sudo apt-get autoremove
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  linux-headers-3.16.0-30 linux-headers-3.16.0-30-generic linux-image-3.16.0-30-generic
  linux-image-extra-3.16.0-30-generic
0 upgraded, 0 newly installed, 4 to remove and 0 not upgraded.
After this operation, 281 MB disk space will be freed.
Do you want to continue? [Y/n] y
...
Found linux image: /boot/vmlinuz-3.16.0-31-generic
Found initrd image: /boot/initrd.img-3.16.0-31-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
done

stephane@steph-dev-vm ~> du -hs /boot/
96M /boot/