Linux Glossary

Learn the terminology used in the Linux ecosystem.

A B C D F G K M P R S T

A

APT

Advanced Package Tool - the package manager used by Debian-based Linux distributions.

B

Bash

Bourne Again Shell - the most widely used command-line shell and scripting language on Linux systems.

C

Chmod

A command used to change the access permissions of files and directories on Linux and Unix-like systems.

CLI

Command Line Interface - a text-based interface for interacting with the operating system by typing commands.

Cron

A time-based job scheduler on Linux that automatically runs scripts and commands at specified intervals.

D

Daemon

A background process that runs continuously on a Linux system, handling services like networking, logging, and scheduling.

Distribution (Distro)

A complete Linux operating system package including the kernel, software, and tools.

F

Firewall

A network security system that monitors and controls incoming and outgoing traffic based on defined rules.

G

Grep

A command-line utility for searching plain-text data for lines that match a regular expression or fixed string.

GUI

Graphical User Interface - a visual way to interact with a computer using windows, icons, menus, and a mouse pointer.

K

Kernel

The core component of the Linux operating system that manages hardware resources and provides essential services to software.

M

Mount

The process of making a filesystem accessible at a specific directory location in the Linux directory tree.

P

Package Manager

Software tool that automates installing, updating, and removing programs.

Partition

A logically divided section of a hard drive or storage device that is treated as an independent unit by the operating system.

R

Repository

A centralized storage location from which Linux package managers retrieve and install software packages.

Root

The superuser account on Linux systems with unrestricted access to all commands, files, and system resources.

T

Terminal

A text-based interface for interacting with your computer through commands.