Ubuntu
How To Fix The Error waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 13083 (unattended-upgr)
Recently, I run the command $ sudo apt update in my Ubuntu virtual machine, it runs successfully. But after that, when I run the command $ sudo apt upgrade, it show me the warning message Waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 12827 (unattended-upgr). This article will tell …
How To Install Ubuntu On Virtualbox Mac
Virtualbox is open-source free software that can host Windows, Linux, macOS, and other operating systems in a virtual machine. It is owned by Oracle company. It can be installed and run on macOS, Linux, and Windows. In this article, we will focus on how to install Virtualbox on macOS, and we will create a virtual …
How To Install V2ray On Amazon EC2 And Google Cloud Ubuntu Linux
V2ray is similar but better than ShadowSocks. This article will tell you how to install v2ray on an Ubuntu Linux server. It also tells you how to use the v2ray client to access the v2ray server. Before starting, you should know that v2ray has strict requirements on time. It is required that the absolute value …
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How Do I Open / Close / List A Port In Ubuntu Firewall
This article will tell you how to enable / disable ubuntu firewall, it also tell you how to manage ( open, close, list ) firewall port number. If you find your service which is running on ubuntu server can not be accessed, you should first confirm that the service’s port number is allowed in ubuntu …
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How To Setup GUI For Amazon EC2 Ubuntu Linux Instance
After I set up an Amazon EC2 Ubuntu Linux server, I can only access it with ssh command. But I really need the GUI interface to browse the ubuntu server easily. After investigating, I finally find the below method of how to enable the XServer on the amazon EC2 Ubuntu Linux server and how to …
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