Well, I tried a lot to insert the guest additions, like type in the command line sudo ./VBoxLinuxAdditions.run or something else. But it always runs like the pictures below. My host is Mac OSX, I'm using VirtualBox.
Not look like this.
Look like this for the two command lines.
The output you're receiving is perfectly normal. The Guest Additions software has been installed successfully, according to the screenshots in the answer.
You just need to reboot after the installation finishes to actually allow the kernel modules and the Guest Additions to take effect and start working.
It's finally works. I just download the guest addition from the website and add it into virtual box, then run sudo ./VBoxLinuxAdditions.run in terminal. That's it.
