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disown: Forfeiting Ownership of a Running Job (When you forgot nohup)
Removes an already running job from the current shell's job list, protecting it from being terminated (SIGHUP) when the terminal is closed or you log out. Typically used when a command was accidentally run without `nohup`.
dmesg: Check Kernel Ring Buffer Messages
This command allows you to view messages output by the kernel during system boot (kernel ring buffer). It is an essential tool for hardware detection, driver loading, and diagnosing system errors.
dmidecode Command Guide
`dmidecode` is a tool that outputs information from the DMI (Desktop Management Interface) table in a human-readable format. It is useful for checking hardware specifications of the system, particularly information about the motherboard, BIOS, and memory.
dnf: RPM Package Manager
dnf is a next-generation package manager for RPM-based Linux systems (like Fedora, RHEL 8+, CentOS 8+, etc.) that installs, updates, removes, and manages packages. It is the successor to yum, offering improved performance and dependency resolution.
Docker Command Guide
Docker is a container-based virtualization platform that helps you deploy and run applications quickly and reliably. Learn the key Docker commands with this guide.
Docker Compose Command Guide
Docker Compose is a tool for defining and running multi-container Docker applications. Using a YAML file, you can configure the services of your application and start all services with a single command. This makes it easy to manage complex application environments.
Docker ps Command Guide
The `docker ps` command is used to view a list of currently running Docker containers. Through this guide, learn how to effectively filter and check desired container information by utilizing various options of `docker ps`.
Docker Volume Command Guide
Docker volumes are the recommended mechanism for persistently storing data generated and used by Docker containers. Even if a container is deleted, the data stored in the volume is preserved, allowing you to manage containers without data loss. This guide covers how to create, manage, and delete Docker volumes.
dpkg: Debian Package Management
dpkg is a low-level package management system for installing, removing, and managing Debian (.deb) packages. It serves as the foundation for higher-level tools like APT, but it does not automatically handle package dependencies, so caution is advised.
du: Check Disk Usage
The du (disk usage) command estimates and displays the amount of disk space occupied by files or directories. It is useful for checking the total usage of a specific path or understanding the usage of subdirectories, aiding in disk space management and troubleshooting.
echo Command Guide: Printing Text and Variables
The `echo` command is used to display a string of text to the standard output (usually the terminal screen). It is widely used in shell scripts to show messages to the user, check variable values, append content to files, and more. This guide will help you learn the basic usage and useful options of the `echo` command.
ed: Line-Oriented Text Editor
ed is the standard line-oriented text editor used in Unix-like systems. It is used for editing text files in the terminal without a graphical interface and can be useful for automated text processing in scripts or pipelines.