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alias: Setting Command Aliases
The alias command is used to create, view, and delete aliases, which are shortcuts for longer or frequently used commands. These aliases are only valid for the current shell session and must be added to your shell configuration file for permanent use.
apropos: Search Manual Pages
apropos is a command that searches the names and descriptions of installed manual pages, finding all manual pages related to specific keywords. It performs the same function as the `man -k` command and helps users quickly find the information they need.
APT (Advanced Package Tool) Command Guide
APT (Advanced Package Tool) is a powerful command-line utility used for managing software packages on Debian and Ubuntu-based Linux distributions. Master how to install, update, and remove packages with APT through this guide, and keep your system up to date.
at Command Guide: Scheduling One-Time Tasks
The `at` command is used to schedule a command to be executed only once at a specific time. Unlike `crontab`, which is used for recurring tasks, `at` is very useful for scheduling one-time jobs. It is suitable for tasks that only need to run once at a specific point, such as backups or system shutdowns.
Mastering the AWK Command: The Magician of Text Processing
AWK is a powerful scripting language and command-line tool used to search for patterns in text files and to process or reformat data based on those patterns. It's utilized for various text processing tasks such as generating data reports, extracting data, and transforming it. Through this guide, you will learn the basic usage and advanced features of AWK.
basename Command Guide
`basename` command is used to extract only the pure filename (or directory name) from a file path, excluding the directory part. It is very useful when you need to handle file names cleanly in shell scripts.
bc: Arbitrary Precision Calculator
`bc` is a command-line arbitrary precision calculator language. It can perform integer and floating-point arithmetic with high accuracy, and supports variables, functions, and conditional statements, making it useful for complex calculations or scripting. It can process input interactively or from files.
bg: Resume suspended jobs in the background
The `bg` command is used to resume jobs that were suspended with `Ctrl+Z` in the background. It is useful when you need to continue a job without occupying the terminal.
bzip2: File Compression and Decompression
bzip2 is a lossless compression program that uses the Burrows-Wheeler transform and run-length encoding to compress files. It generally offers higher compression ratios than gzip, but at the cost of slower compression and decompression speeds. It is primarily used for compressing single files and is often used in conjunction with `tar` for archiving multiple files.
cat Command Guide: View and Concatenate File Contents
`cat` command is used to read one or more files and display their content to standard output (usually the terminal screen). It is an abbreviation of 'concatenate', and it also provides the function to concatenate files and output them. Learn various ways to use the `cat` command through this guide.
cd Command Guide: Basics of Directory Navigation
The `cd` command (change directory) is one of the most fundamental commands used in Linux and Unix-based operating systems to change the current working directory (location). It helps users easily navigate to desired locations within the file system. This guide will help you learn the various usages of the `cd` command.
chgrp: Change File/Directory Group Ownership
The chgrp command is used to change the group ownership of specified files or directories. It is an important part of file system permission management, useful for controlling access to resources by users belonging to specific groups.