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              [octopus@pc3 ~]$ sudo yum install kmod-VirtualBox-$(uname -r) kmod-VirtualBox[sudo] password for octopus:
 Sorry, try again.
 [sudo] password for octopus:
 Loaded plugins: langpacks
 Package kmod-VirtualBox-3.17.7-300.fc21.x86_64-4.3.20-2.fc21.2.x86_64 already installed and latest version
 Resolving Dependencies
 --> Running transaction check
 ---> Package kmod-VirtualBox.x86_64 0:4.3.20-2.fc21.2 will be installed
 --> Finished Dependency Resolution
 
 Dependencies Resolved
 
 ================================================================================
 Package           Arch     Version              Repository                Size
 ================================================================================
 Installing:
 kmod-VirtualBox   x86_64   4.3.20-2.fc21.2      rpmfusion-free-updates    15 k
 
 Transaction Summary
 ================================================================================
 Install  1 Package
 
 Total download size: 15 k
 Installed size: 0
 Is this ok [y/d/N]: y
 Downloading packages:
 kmod-VirtualBox-4.3.20-2.fc21.2.x86_64.rpm                  |  15 kB  00:01
 Running transaction check
 Running transaction test
 Transaction test succeeded
 Running transaction (shutdown inhibited)
 Installing : kmod-VirtualBox-4.3.20-2.fc21.2.x86_64                       1/1
 Verifying  : kmod-VirtualBox-4.3.20-2.fc21.2.x86_64                       1/1
 
 Installed:
 kmod-VirtualBox.x86_64 0:4.3.20-2.fc21.2
 
 Complete!
 [octopus@pc3 ~]$ sudo yum install akmod-VirtualBox kernel-devel-$(uname -r); akmods
 Loaded plugins: langpacks
 Package kernel-devel-3.17.7-300.fc21.x86_64 already installed and latest version
 Resolving Dependencies
 --> Running transaction check
 ---> Package akmod-VirtualBox.x86_64 0:4.3.20-2.fc21 will be installed
 --> Processing Dependency: VirtualBox-kmodsrc >= 4.3.20-1 for package: akmod-VirtualBox-4.3.20-2.fc21.x86_64
 --> Running transaction check
 ---> Package VirtualBox-kmodsrc.x86_64 0:4.3.20-3.fc21 will be installed
 --> Finished Dependency Resolution
 
 Dependencies Resolved
 
 ================================================================================
 Package              Arch     Version           Repository                Size
 ================================================================================
 Installing:
 akmod-VirtualBox     x86_64   4.3.20-2.fc21     rpmfusion-free            22 k
 Installing for dependencies:
 VirtualBox-kmodsrc   x86_64   4.3.20-3.fc21     rpmfusion-free-updates   653 k
 
 Transaction Summary
 ================================================================================
 Install  1 Package (+1 Dependent package)
 
 Total download size: 675 k
 Installed size: 637 k
 Is this ok [y/d/N]: y
 Downloading packages:
 (1/2): akmod-VirtualBox-4.3.20-2.fc21.x86_64.rpm            |  22 kB  00:09
 (2/2): VirtualBox-kmodsrc-4.3.20-3.fc21.x86_64.rpm          | 653 kB  00:54
 --------------------------------------------------------------------------------
 Total                                               12 kB/s | 675 kB  00:54
 Running transaction check
 Running transaction test
 Transaction test succeeded
 Running transaction (shutdown inhibited)
 Installing : VirtualBox-kmodsrc-4.3.20-3.fc21.x86_64                      1/2
 Installing : akmod-VirtualBox-4.3.20-2.fc21.x86_64                        2/2
 Verifying  : akmod-VirtualBox-4.3.20-2.fc21.x86_64                        1/2
 Verifying  : VirtualBox-kmodsrc-4.3.20-3.fc21.x86_64                      2/2
 
 Installed:
 akmod-VirtualBox.x86_64 0:4.3.20-2.fc21
 
 Dependency Installed:
 VirtualBox-kmodsrc.x86_64 0:4.3.20-3.fc21
 
 Complete!
 Needs to run as root to be able to install rpms.           [FAILED]
 [octopus@pc3 ~]$ sudo systemctl restart systemd-modules-load.service
 [octopus@pc3 ~]$ sudo yum install akmod-VirtualBox kernel-devel-$(uname -r); akmods
 Loaded plugins: langpacks
 Package akmod-VirtualBox-4.3.20-2.fc21.x86_64 already installed and latest version
 Package kernel-devel-3.17.7-300.fc21.x86_64 already installed and latest version
 Nothing to do
 Needs to run as root to be able to install rpms.           [FAILED]
 [octopus@pc3 ~]$
 
 
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