Linux Pocket Guide: Essential Commands
If you use Linux in your day-to-day work, this popular pocket guide is the perfect on-the-job reference. The third edition features new commands for processing image files and audio files, running and killing programs, reading and modifying the system clipboard, and manipulating PDF files, as well as other commands requested by readers. You’ll also find powerful command-line idioms you might not be familiar with, such as process substitution and piping into bash.
Linux Pocket Guide provides an organized learning path to help you gain mastery of the most useful and important commands. Whether you’re a novice who needs to get up to speed on Linux or an experienced user who wants a concise and functional reference, this guide provides quick answers.
Selected topics include:
- The filesystem and shell
- File creation and editing
- Text manipulation and pipelines
- Backups and remote storage
- Viewing and controlling processes
- User account management
- Becoming the superuser
- Network connections
- Audio and video
- Installing software
- Programming with shell scripts
Why Read This Book
You will get a concise, practical command-line reference that helps you move from occasional Linux use to confident daily work on development hosts and embedded Linux targets. The book focuses on the most useful commands and idioms—pipes, redirection, process substitution, and common utilities—so you can quickly diagnose systems, manipulate data, and automate workflows for firmware, IoT, and embedded projects.
Who Will Benefit
Embedded and firmware engineers, DevOps/IoT developers, and system integrators who use Linux hosts or embedded Linux devices and need a compact, hands-on command reference for development and troubleshooting.
Level: Intermediate — Prerequisites: Basic comfort with using a terminal/shell and a Linux system (access to a Linux shell on your workstation or an embedded target).
Key Takeaways
- Use core Linux commands to manage files, directories, and permissions on development hosts and embedded targets.
- Automate common tasks with pipes, redirection, process substitution, and simple shell constructs.
- Inspect and manipulate text and binary data with grep, sed, awk, hexdump, strings, and related tools.
- Manage processes, services, and system state using ps, top, systemctl, journalctl, and signal handling.
- Transfer, archive, and sync files reliably with ssh, scp, rsync, tar, and dd between hosts and embedded devices.
- Troubleshoot networking and device I/O (serial/USB) using netcat, ss, ifconfig/ip, tcpdump, and basic debugging utilities.
Topics Covered
- Introduction and how to use this guide
- The shell and command-line basics
- Files, directories, and permissions
- Text processing and filters (grep, sed, awk, cut, sort)
- Pipes, redirection, and shell idioms
- Processes, job control, and signals
- System information and monitoring (top, vmstat, free)
- Networking and remote access (ssh, scp, netcat, ip)
- Archiving, compression, and backups (tar, gzip, rsync, dd)
- Package management and service control (apt/yum/systemctl)
- Working with media and documents (image, audio, PDF tools)
- Editing, searching, and regular expressions
- Troubleshooting and diagnostic tools (strace, lsof, journalctl)
- Appendices: common command summaries and quick reference
Languages, Platforms & Tools
How It Compares
More compact and command-focused than William Shotts' The Linux Command Line (which is more tutorial), and far handier as a pocket reference than the encyclopedic Linux in a Nutshell.
