Ubuntu12.04 kernel upgrade and add system call

1Ubuntu12. 04 kernel upgrade 1 prerequisites: & bull; machines or virtual machines with Unbuntu12.04 installed & bull; download the latest stable version of Linux kernel source code: Yes

1 Ubuntu12.04 kernel upgrade

1. Prerequisites:

• Machines or virtual machines with Unbuntu12.04 installed

• Download the latest stable version of Linux kernel source code: http://www.kernel.org/. the latest stable version is 3.9.4.

• Root permission

2. decompress the file to the/usr/src folder.

Because I copied the file directly from the local system to the folder in the virtual machine, the permission issue may occur. Copy the file to a folder with lower permissions and move the file to the root permission on the terminal.

Move a file to a specified folder

Decompress the file:

Unzip the command:

Xz-d linux-3.9.4.tar.xz
Tar-xvf linux-3.9.4.tar

The first command takes about 40 seconds to one minute.

The execution process of the second command:

After decompression:

Decompress the package. Configure compilation and installation.