Git allows you to manage the history of changes for programs and documents, enabling you to revert to previous states and collaborate efficiently with others. This guide explains basic Git operations. # Install Git Detailed instructions for installing Git can be found in the following article. Refer to it to install Git in your environment. How to Install Git on Windows # Initial Git Configuration To use Git, you need to set your username and email address.

This guide explains how to migrate a Git repository to another server. # Create an Empty Bare Repository on the Destination Server First, create an empty bare repository on the destination server. Run the following command on the destination server: git init --bare The goal of this guide is to migrate the Git repository to this newly created bare repository. # Clone the Bare Repository from the Source Repository Run the following command on your PC to clone a bare repository from the source repository:

Installing FriendlyWrt on a NanoPi R2S allows anyone to easily set up a router. This guide explains how to install FriendlyWrt on the NanoPi R2S. # Introduction The NanoPi R2S is a single-board computer manufactured by FriendlyElec. With two Ethernet ports, it is ideal for use as router hardware. FriendlyWrt is an OpenWrt-based OS provided by FriendlyElec. It is open-source and suitable for developing routers, NAS, and IoT applications. # Download FriendlyWrt Go to the official download link and download the FriendlyWrt image file from 01_Official images/01_SD card images.

Win32 Disk Imager is a disk imaging tool for Windows. This guide explains how to install and use Win32 Disk Imager. # What is Win32 Disk Imager? Win32 Disk Imager is a Windows tool for writing disk images to SD cards and USB drives. It supports disk images in IMG format. With this tool, you can write a disk image to a removable drive or save the contents of a removable drive as an image file.

When using Ubuntu as a server OS, you may need to configure it so that the IP address remains consistent. This guide explains how to set a static IP address on Ubuntu. # Check Network Interface Information Enter ip address to check your network interface information. ip address 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether dc:a6:32:c4:6d:4e brd ff:ff:ff:ff:ff:ff inet 192.

SSH is a protocol for securely logging into remote computers, transferring files, and executing commands over a network. It encrypts communications, preventing eavesdropping and ensuring security. This guide explains how to generate keys for use with SSH. # Setting the Encryption Algorithm and Key Length You can generate a key using the ssh-keygen command. The following example generates a key using the RSA encryption algorithm with a key length of 4096.

When packages are updated automatically, there is a chance that software that was previously working may suddenly stop functioning. This guide explains how to disable automatic updates for APT packages. # Check Automatic Update Settings The automatic update settings are located in the 20auto-upgrades file within the /etc/apt/apt.conf.d directory. Below is an example of the settings: APT::Periodic::Update-Package-Lists "1"; APT::Periodic::Unattended-Upgrade "1"; Update-Package-Lists indicates automatic package updates, while Unattended-Upgrade represents automatic package upgrades.

In C, it is possible to allocate memory dynamically. Dynamic memory allocation is useful when the required memory size changes at runtime or when large memory areas are needed. This article explains how to allocate memory dynamically and provides some points of caution. # Functions for Dynamic Memory Allocation and Deallocation The C standard library provides functions for dynamic memory allocation and deallocation. #include <stdlib.h> void *malloc(size_t size); void free(void *ptr); void *calloc(size_t nmemb, size_t size); void *realloc(void *ptr, size_t size); To use these functions, include stdlib.

During development, you may encounter situations where you need to allocate multiple dynamic memory blocks within a function. If memory allocation fails, you’ll need to free any previously allocated memory, which can make error handling complex. This article explains how to simplify error handling and manage memory deallocation by using the goto statement. # What is the goto Statement? The goto statement is a syntax used to jump to a specified label within a function.

Both apt and apt-get are package management tools used in Debian-based Linux distributions. This article explains the differences between these two commands and when to use each. # What is apt-get? apt-get is one of the older package management tools. It allows you to fetch packages from repositories, install, upgrade, and remove them. It automatically handles dependency resolution, deals with conflicting packages, and manages the cache. Additionally, it can perform system-wide upgrades.