I run VirtualBox in my Mac OS. And I install CentOS Linux as a virtual machine OS in VirtualBox. When I start the CentOS virtual machine, and when I focus on the virtual machine by clicking the mouse key in it, I can not go back to my Mac OS easily, this makes me crazy. […]
How To Switch Between VirtualBox Host And Guest OS Read More »
After installing CentOS, when you start it, it will give you a command-line interface, this is not user-friendly. This article will tell you how to install GUI desktop software GNOME in CentOS and boot CentOS with GUI desktop.
How To Enable GUI Mode In CentOS 7 Read More »
Recently I installed CentOS 7.7 on Oracle VirtualBox. After installation, when I run command yum update, it shows could not retrieve mirrorlist could not resolve host mirrorlist.centos.org unknown error.
In the previous article How To Install BT VPS Control Panel And Restore WordPress Website Into It, I had done the following things. Install BT(宝塔) VPS control panel in a Linux VPS. Install Nginx server in the above Linux VPS server. Create a website in the Nginx server. Register a domain point to the website.
How To Use Nginx Redirect Function To Decorate V2ray Request As Https Request Read More »
I have a VPS on BlueHost. The VPS runs CentOS 6. These days I learned that if I enable tcp_bbr in the VPS, then it will use full bandwidth and will not waste any network bandwidth bit. So I want to enable the tcp_bbr for it. But tcp_bbr is supported only in Linux kernel which
How To Upgrade Bluehost CentOS Linux VPS Kernel Read More »
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
How To Install V2ray On Amazon EC2 And Google Cloud Ubuntu Linux Read More »
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
How Do I Open / Close / List A Port In Ubuntu Firewall Read More »
This article will tell you how to install a VNC server on amazon ec2 ubuntu Linux. It also tells you how to connect to the VNC server from your local machine use TightVNC client.
Python, known for its dynamic nature, provides various mechanisms to dynamically load modules during runtime. One such method is the __import__() function. This powerful function enables developers to import modules dynamically, allowing for flexible and adaptable code structures. This article will show you how to use the __import__() function with examples.
How To Use __import__() Function to Load / Import Python Package, Module Dynamically Read More »
Python provide hasattr(), getattr(), setattr() and delattr() function for us to verify ( hasattr() ), get ( getattr() ), set ( setattr() ) or delete ( delattr() ) objects properties. We can use these functions to implement reflect feature in python. This example will tell you how to use them.
Python Reflect Example Read More »