Category: Linux terminal commands

Learn to use the od command to dump files in octal and hexadecimal format, with practical examples and usage tips.

Learn to use the Linux time command to measure how long your scripts and programs take, understanding real, user, and system times.

Learn how to use the export command to define and manage environment variables in Linux, from basic syntax to making it permanent in your shell sessions.

Learn how to use locate to find files instantly on your Linux system, from installation to advanced examples.

Learn to use xxd to generate hex dumps of files and easily revert them, with practical examples and advanced options.

Learn to use the Linux strings command to extract readable text from binary files and obtain valuable information in forensic analysis and debugging.

Discover how to use ffmpeg on Linux to convert, compress, and apply filters to audio and video files quickly and powerfully.

Learn how to use the convert command of ImageMagick to resize, change format, apply effects, and perform batch operations on images from the Linux terminal.

Learn how to use xclip and xsel to copy text to the clipboard from the Linux terminal, with examples of installation, basic and advanced usage.

Learn how to use the notify-send command to display desktop notifications on Linux, from its basic syntax to practical examples and advanced tips.

Learn how to use xdg-open to launch any file with its default associated program in Linux desktop environments.

Learn how to use md5sum and sha256sum in Linux to calculate and compare hashes and ensure that your files have not been altered.

Learn how to use the Linux base64 command to easily encode and decode data, with practical examples and useful tips.

Learn how to use the shuf command to randomly shuffle lines of text in Linux, with practical examples and advanced options.

Learn how to use the Linux seq command to create numerical sequences quickly and efficiently in your scripts and terminal.

Learn to use the Linux yes command to produce repetitive text streams and automate tasks in scripts and tests.

Learn how to use the timeout command to limit the execution of any process in Linux and prevent it from hanging indefinitely.

Learn how to use the sleep command to delay the execution of scripts and processes in Linux, with practical examples and best practices.

Learn how to use the Linux cal command to display monthly and yearly calendars directly in the terminal, with examples, useful options, and customization tricks.

Learn how to use the Linux date command to display the current date and time, customize its format, and safely adjust the system clock.

The help command provides quick information about the shell’s built‑ins, displaying syntax, options, and examples without leaving the terminal.

Discover how to use the info command to access the detailed documentation of Linux commands and utilities.

Learn to use the man command to consult the documentation of any utility in Linux quickly and efficiently.

The sar command, part of the sysstat package, allows collecting and querying historical performance data of the Linux system, facilitating the analysis of trends and bottlenecks.

Learn how to use iostat to monitor disk and block device performance on Linux systems, with practical examples and explanation of its key metrics.

Learn how to use vmstat to monitor in real time the usage of memory, CPU, and processes on Linux systems, with practical examples and explanation of its columns.

Discover how to use lsof to inspect which files, sockets, and devices each process has open on your Linux system.

Discover how to use ltrace to monitor shared library calls in Linux processes and debug applications effectively.

Learn how to use strace to monitor and debug your programs’ interactions with the Linux kernel.

Syslog is the standard event logging system in Linux, which allows capturing, classifying, and forwarding kernel and application messages according to their facility and severity level.

The lscpu command provides a detailed and readable view of the processor’s architecture, cores, threads, and capabilities on Linux systems, facilitating hardware management and optimization.

Learn how to use the expr command to evaluate arithmetic and string expressions in shell scripts, with clear examples and best practices.

In this article we explore what the sh command is, its role as the standard POSIX shell in Linux, and how to use it effectively in scripts and on the command line.

Learn how to use the fdisk command in Linux to partition hard drives safely and efficiently. This guide covers everything from installation to creating, modifying, and deleting partitions with practical examples.

Learn to use the SSH command in Linux to establish secure remote connections, from basic syntax to advanced tunnel configurations and key authentication.

Learn to use netstat to monitor connections, ports, and network statistics on Linux systems, with practical examples and a comparison with its successor ss.

Learn how to use the usermod command to modify user account attributes in Linux securely and efficiently.

Learn how to use the groups command to see which groups a user belongs to on Linux systems and manage permissions easily.

Learn how to use the chgrp command in Linux to change the group of files and directories, with syntax, options, and practical examples.

Learn the differences between egrep and fgrep and how to leverage their features for more efficient text searches in Linux.

Learn how to use the grep command in Linux to search for patterns in text with basic, advanced options and practical examples.

Learn how to use the uniq command in Linux to remove duplicate lines, its most useful options, and practical examples for your daily work.

Learn to use the Linux cat command to view and combine files quickly and efficiently.

Discover how to use the stat command to obtain complete metadata for files and directories on Linux systems, from permissions to timestamps.

Discover how to use the touch command to create empty files and modify their timestamps on Linux systems, with practical examples and advanced tricks.

Learn how to use the Linux watch command to execute any instruction periodically and observe changes in real time.

Learn how to configure and use logrotate to rotate, compress, and delete log files automatically on Linux systems.

Learn how to use localectl to manage language, locale, and keyboard layout configuration on Linux systems easily and effectively.

Learn how to use the timedatectl command to view and adjust the date, time, and time zone of your Linux system, as well as manage NTP synchronization easily and effectively.

Learn how to use the dmidecode command in Linux to obtain detailed information about the BIOS, motherboard, processor, and memory directly from the DMI table.

Discover how to use inxi to get a complete summary of your hardware and software on Linux quickly and easily.

Discover how to use the hwinfo command to get detailed information about all components of your Linux system, from the CPU to the network card.

Discover how to use the lsusb command to list and get details of the USB devices connected to your Linux system.

Learn how to use lspci to list and analyze PCI devices in Linux, with practical examples and key options.

The lsmem command allows obtaining detailed information about the physical memory of a Linux system, showing blocks, sizes, and states. It is ideal for administrators who need to validate the availability and hot‑plug capability of RAM.

Discover how to use the uname command to obtain detailed information about the kernel, hardware, and version of the Linux operating system.

Discover how to use the bc command in Linux to perform arbitrary-precision calculations, from simple operations to complex scripts.

Learn to use the test command and its operators to create effective conditional expressions in Bash scripts.

Discover how Zsh improves your Linux terminal experience with advanced autocompletion, themes, and plugins via Oh My Zsh.

Bash is the default command interpreter on Linux and also a powerful scripting language. It allows automating tasks and managing systems from the terminal.

Learn how the source command (or its dot .) allows loading and executing scripts within the current shell, preserving variables and functions without launching a new process.

Learn how to use the history command to view, reuse, and manage command history in Linux, improving your productivity and security in the terminal.

Learn to use the alias command to create shortcuts that simplify your work in the terminal and increase your productivity.

Learn how to use the env command to inspect and change environment variables of a process in Linux, with practical examples and best practices.

Learn how to use the read command in Bash to capture user input in your scripts, with syntax, options, and practical examples.

Learn how to use the Linux printf command to format and display text with format specifiers, width, precision, and escape sequences.

The echo command allows printing text and variables in the Linux terminal, with options to control line breaks and escape sequences.

Learn how to use the smartctl command in Linux to monitor the health of your hard drives and SSDs, interpret critical S.M.A.R.T. attributes, and set up early alerts that prevent data loss through proactive diagnostics.

Learn how to use hdparm to query and adjust parameters of your hard drives in Linux and measure their performance safely.

Discover how to use the powerful dd command to copy, clone, and convert data at the block level on Linux systems, with practical examples and security recommendations.

Learn what the fsck command is in Linux, when to use it, and how to repair file systems safely.

Learn to use the blkid command to identify and manage storage devices on Linux systems.

Learn how to use the lsblk command to get a clear view of block devices on your Linux system and manage your storage efficiently.

Learn to use the mount and umount commands to manage file systems in Linux, with practical examples and best practices.

Learn to use the mkfs command in Linux to format partitions with different filesystems such as ext4, XFS, and Btrfs, including examples and essential precautions.

Learn how to use the advanced disk partitioning command in Linux with practical examples and best practices.

Learn how to use pacman, the powerful package manager of Arch Linux, from basic installation to advanced maintenance and troubleshooting tasks.

Flatpak allows distributing and running applications on Linux using containers, ensuring distribution independence, security, and ease of updating.

Discover how to use snap to install and manage universal applications on any Linux distribution, simplifying dependencies and updates.

Learn how to use the rpm command to install, update, verify, and remove .rpm packages in Red Hat-based distributions, with practical examples and best practices.

DNF is the default package manager of Fedora that replaces YUM, offering better performance, greater security, and a more intuitive syntax for managing software.

Learn how to use YUM, the package manager for CentOS and RHEL, to install, update, and remove software efficiently.

Learn to use the dpkg command to install, remove, and query .deb packages on Debian-based systems, understanding its operation and limitations.

apt-get is the classic Linux command for installing, updating, and removing packages from APT repositories, managing dependencies automatically.

Learn how to use apt to install, update, and manage packages on Debian and Ubuntu-based systems.

Learn how to view the contents of gzip-compressed files using zcat and zless, avoiding the need to decompress them beforehand and saving time and space.

Discover how to use 7z in Linux to compress and decompress files in multiple formats with high efficiency and advanced options.

Learn how to use the unzip command in Linux to decompress .zip files quickly and efficiently, with practical examples and the most useful options.

Learn how to use the zip command in Linux to create .zip files that are fully compatible with Windows, macOS, and other Linux distributions, using the most appropriate options.

Discover how to use the xz command to compress and decompress files with high compression ratio and low resource consumption on Linux systems.

Discover how to use bzip2 to achieve more efficient compression than gzip and when it is the best option.

Learn how to use the gunzip command to decompress .gz files on Linux systems, with practical examples and useful options.

Learn how to use the gzip command in Linux to compress and decompress files quickly and efficiently, with practical examples and the most useful options.

Learn how to use tar to create, extract, and compress files in Linux, with practical examples and the most useful options.

tcpdump allows capturing and filtering network traffic on Linux, providing a detailed view for diagnosis and security.

Learn how to configure and manage the Ubuntu firewall with UFW, a simple interface that allows you to protect your system without complications.

Learn how to use iptables to create effective firewall rules and protect your Linux server.

Learn how to use the hostname command to query and modify your computer’s name on Linux systems, both temporarily and permanently.

Learn how to use the host command in Linux to query DNS records quickly and easily, with practical examples and best practices.

Learn how to use nslookup to query DNS records and resolve domain names on Linux systems.