1、檢查是否已經安裝

使用dpkg-query命令檢查是否有可用的內核頭文件。

$ dpkg-query -s linux-headers-$(uname -r)
如果輸出顯示install ok installed說明已經安裝成功

Package: linux-headers-4.15.0-142-generic
Status: install ok installed

2、安裝內核頭文件

$ sudo apt-get install linux-headers-$（uname -r）

3、驗證頭文件是否成功安裝。

安裝成功有如下提示：

$ dpkg-query -s linux-headers-$(uname -r) 
Package: linux-headers-4.15.0-142-generic
Status: install ok installed
Priority: optional
Section: devel
Installed-Size: 12640
Maintainer: Ubuntu Kernel Team <kernel-team@lists.ubuntu.com>
Architecture: amd64
Source: linux-hwe
Version: 4.15.0-142.146~16.04.1
Provides: linux-headers, linux-headers-3.0
Depends: linux-headers-4.15.0-142, libc6 (>= 2.14), libelf1 (>= 0.142), libssl1.0.0 (>= 1.0.0)
Description: Linux kernel headers for version 4.15.0 on 64 bit x86 SMPThis package provides kernel header files for version 4.15.0 on64 bit x86 SMP..This is for sites that want the latest kernel headers.  Please read/usr/share/doc/linux-headers-4.15.0-142/debian.README.gz for details.

頭文件默認在/usr/src下