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Showing posts from September, 2023

Overview to an VIM editor

Vim is a versatile text editor that can be used for a wide range of tasks. Its power and flexibility make it a popular choice among developers, system administrators, writers, and anyone who works extensively with text files. Here are some common uses of Vim: Code Editing: Vim is often used by programmers for editing source code. Its syntax highlighting, code folding, and extensive keyboard shortcuts make it efficient for writing and editing code in various programming languages. Text File Editing: You can use Vim for editing plain text files, configuration files, log files, and more. Its search and replace functionality is particularly useful for making bulk changes in text documents. System Administration: System administrators often use Vim to edit configuration files, scripts, and other system-related text files on Linux and Unix-based systems. Writing and Note-taking: Some writers and note-takers prefer Vim for distraction-free writing. It offers features like spell-chec...

Overview to SSH

SSH, or Secure Shell, is a network protocol that allows you to securely access a remote computer over an unsecured network. It is often used by system administrators to manage servers, but it can also be used by anyone who needs to access a remote computer in a secure way. SSH works by encrypting all data that is sent between the client and the server. This means that even if someone is able to intercept the data, they will not be able to read it. SSH also provides authentication, so that only authorized users can access the remote computer. There are many different ways to use SSH. Here are a few common uses: To access a remote server and manage it. This is the most common use of SSH. System administrators use SSH to install software, configure settings, and troubleshoot problems on remote servers. To transfer files between computers. SSH can be used to securely transfer files between two computers, even if they are on different networks. To connect to a remote database. SSH can...

Package Management and Installing Software - Arch Linux

Package Management: Update Package Database: shell sudo pacman -Sy This command synchronizes the local package database with the remote repositories. It should be run before any package installation or upgrades. Upgrade All Installed Packages: shell sudo pacman -Syu This command updates all installed packages to their latest versions. It also updates the package database. Search for Packages: shell pacman -Ss package_name Use this command to search for packages in the repositories. Replace package_name with the package you want to find. List Installed Packages: shell pacman -Q This lists all installed packages on your system. Show Information about a Package: shell pacman -Qi package_name This displays detailed information about a specific package, including its version, description, and dependencies. Remove a Package (and Dependencies not required by other packages): shell sudo pacman -R package_name Use this command to uninstall a package. It will also remove dependencies that...

File System Hierarchy and Permissions - Linux

File System Hierarchy: The Unix-like file system hierarchy is a structured organization of directories and files. It starts from the root directory ("/") and branches out into various subdirectories. Here are some of the most important directories and their purposes: / (Root Directory): The top-level directory in the file system hierarchy. Everything on the system is under this directory. /bin (Binary): Contains essential system binaries (executable files) required for system booting and repair. /boot: Contains boot-related files, including the kernel and bootloader configuration. /dev (Devices): Contains device files representing hardware devices, such as hard drives, keyboards, and serial ports. /etc (Etcetera): Houses system-wide configuration files and scripts. /home: User home directories are stored here. Each user has their own subdirectory here. /lib (Library): Contains shared libraries needed by system programs and applications. /mnt (Mount): Used for tempor...