Unix in a NutshellIt also covers many important, industry-standard open source tools
This book also fully discusses commonly used shells (bash, ksh and tcsh) and important elements such as regular expressions expressions, and even older tools like sed, awk, and vi.
Unix is ​​not a huge thing: it is a complex, and the Unix Technical Manual is the book that brings it all together.

What exactly is unix? The original unix source code is owned by sco, the registered trademark of unix is ​​owned by open group, and the leading imitation unix systems are gnu/linux, mac os x and solaris. Many of the commands and options included with these versions overlap, but there are still many differences.
Confused? Don’t enter rm-rf yet. In a world where there are currently no supporters of the Unix standard, the Fourth Edition of the Unix Technical Manual attempts to define Unix. It extracts common parts from leading Unix-like operating systems, so you can easily find commands that work everywhere. Moreover, it displays the most important, system-specific commands and options, so you can work expertly on your favorite version of Unix.
This book also covers many important, industry-standard open source tools that are part of Unix, even if they are not shipped with the operating system. These tools include cvs, subversion, gnu make, and gdb, as well as smaller tools such as curl and wget. In addition, this book also fully discusses commonly used shells (bash, ksh, and tcsh) and important elements such as regular expressions, as well as old tools such as sed, awk, and vi.
If you are overwhelmed by the variety of Unix systems, or if you typically work with one or more Unix systems, you will need to use this book every day. Unix is ​​not one huge thing: it is a complex, and The Unix Technical Manual is the book that brings it all together.

Unix in a Nutshell directory

Foreword
Part 1 Commands and shells
Part 1 Chapter Introduction
Unix in the 21st Century
Getting a Compiler
Compiling Software
What’s a Quick Reference?
A Beginner’s Guide
Solaris: Standards-Conforming Programs< br />Chapter 2 unix commands
Introduction
General command summary
solaris command summary
gnu/linux command summary
mac os x command summary
java Command Summary
Chapter 3 Overview of unix shell
Introduction to shell
Purpose of shell
Types of shell

.Shell source code URL
Common Function
Different functions
Chapter 4 bash and korn shell
Function overview
Calling shell
Syntax
Function
Variables
Arithmetic expressions
Command history mechanism
Job control
Command execution
Restricted shell
Built-in commands (bash and korn shell)
Chapter 5 tcsh: extended c shell
Function overview
Calling shell
Syntax
Variables
Predefined shell variables
Expressions
Command history mechanism
Command line processing
Work control
Built-in commands
Chapter 6 Package Management
linux package management
red hat package management program
yum : yellowdog updater modified
yum command summary
up2date: red hat update agent
debian package management program
macos x package management
solaris package management
Second Partial text editing and processing
Chapter 7 Pattern Matching
File names and patterns
Metacharacters
Metacharacters listed according to unix program classification
Chapter 8 emacs Editor
Concept overview
Command line syntax
Command summary, classified by group
Command summary, classified by key
Command summary, classified by name
Chapter 9 vi, ex and vim editor
Concept overview
Command line syntax
Operation of vi
vi command
vi configuration
ex basic concepts< br />Ex command summary (in alphabetical order)
Chapter 10 sed editor
Concept overview
Command line syntax
Sed command syntax
Classification of sed commands Summary
Summary of sed commands (in alphabetical order)
Chapter 11 awk Programming Language
Concept Overview
Command Line Syntax
Patterns and Programs
Built-in Variables
Operators
Assignment of variables and arrays
User-defined functions
Gawk-specific functions
Implementation limitations
Classified list of awk functions and commands
/>Summary of awk functions and commands (in alphabetical order)
Output redirection
Source code
Part 3 Software Development
Chapter 12 Overview of Source Code Management
Introduction and Terminology
Usage Model
unix Source Code Management System
Other Source Code Management Systems
Chapter 13 Revision Control System
Command Overview
Basic Operations
General rcs specifications
Command summary (in alphabetical order)
Chapter 14 Concurrent Version System
Concept Overview
Command line syntax and options
dot file
Environment variables
Keywords and keyword patterns
Date
cvsroot variables
Command summary (in alphabetical order)
Chapter 15 Subversion Version Control System
Conceptual overview
Getting subversion
Using subversion: a quick guide
subversion command line client program: svn
Repository management: svnadmin
Checking the repository: svnlook
Provide remote access: svnserve
Other subversion components
Chapter 16 gnu make tool
Concept overview
Command line syntax
makefile line
Macros
Special target name
Writing command line
Chapter 17 gdb debugger
Concept overview
Command line syntax
Initialization file
gdb expression
gdb text user interface
Group list of gdb commands
Summary of set and show commands
Summary of info command
Summary of gdb commands (in alphabetical order)
No. Chapter 18 Writing Man Pages
Introduction
nroff/troff overview
man macro summary (in alphabetical order)
Predefined strings
Internal names
Sample document
Part 4 Command and shell reference materials
Appendix 1 iso 8859-1 (latin-1) character set
Bibliography