Linux Tutorial
How To Change Ubuntu Administrator And Root User Password
There are two important user account in ubuntu linux, one is administrator the other is root. We usually use administrator user account to remote login to ubuntu linux server ( $ ssh [email protected] ) then change to root user account to do root user tasks. But if your ubuntu linux server is created by a …
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How To Check CPU Usage And Server Load In WHM To Fix Website Performance Issue
My website host provider uses WHM ( Web Host Manager ) to manage multiple websites that are CPanel-based. WHM is a very good tool to monitor website performance, you can use it to check CPU, ram, and disk space usage percentage, it can also monitor and manage server processes. It is an all-in-one platform for …
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How To Fix Error Job For [email protected]:1.service Failed Because The Control Process Exited With Error Code. See “systemctl Status [email protected]:1.service” And “journalctl -xe” For Details When Start VNC Server.
After install VNC server on CentOS, when i run command # systemctl start [email protected]:1.service to start it, i meet bellow error message.
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 …
