CentOS

How To Fix Another App Is Currently Holding The Yum Lock Waiting For It To Exit Error

When i install tigervnc server in CentOS with yum command # yum install tigervnc tigervnc-server -y, i meet below error messages. Loaded plugins: fastestmirror, langpacks Existing lock /var/run/yum.pid: another copy is running as pid 3339. Another app is currently holding the yum lock; waiting for it to exit… The other application is: PackageKit Memory : …

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How To Resolve VirtualBox Guest Additions: Kernel Headers Not Found For Target Kernel Error

In this example, I install a CentOS in a VirtualBox virtual machine. Then I click the virtual machine to focus it, and then I click Devices —> Insert Guest Additions CD image… menu item in the virtual machine top menu bar to install additions image like below picture. But during the installation process, I meet …

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