The Fourth Edition of Unix Shell Programming
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Stephen Kochan is a developer, trainer, and best-selling author. As lead developer for Tinder's iOS application, he managed development of major new features, including a complete redesign for iOS 7, Moments (photo capture and annotation), lists, and Passport. He also developed Tinder's Apple Watch app. Previously, he was senior/lead developer for several award-winning iOS applications, including Call of Duty Ghosts, Disney DMA, Frequency, and DirecTV. His ten bestselling books include Programming in Objective C and Programming in C. Formerly a software consultant and instructor at Bell Laboratories, he has 20+ years of teaching experience in Objective-C, C, shell programming, and Unix. Patrick Wood is CTO at Electronics for Imaging, with responsibility for RandD for New Product Development. Formerly a member of technical staff at Bell Laboratories, he co-founded Pipeline Associates, Inc., a Unix consulting firm, with Stephen Kochan. With Kochan, he also co-authored five previous books, including Exploring the Unix System, Unix System Security, and Unix Shell Programming.
1 A Quick Review of the Basics
Some Basic Commands
Displaying the Date and Time: The date Command
Finding Out Whos Logged In: The who Command
Echoing Characters: The echo Command
Working with Files
Listing Files: The ls Command
Displaying the Contents of a File: The cat Command
Counting the Number of Words in a File: The wc Command
Command Options
Making a Copy of a File: The cp Command
Renaming a File: The mv Command
Removing a File: The rm Command
Working with Directories
The Home Directory and Pathnames
Displaying Your Working Directory: The pwd Command
Changing Directories: The cd Command
More on the ls Command
Creating a Directory: The mkdir Command
Copying a File from One Directory to Another
Moving Files Between Directories
Linking Files: The ln Command
Removing a Directory: The rmdir Command
Filename Substitution
The Asterisk
Matching Single Characters
Filename Nuances
Spaces in Filenames
Other Weird Characters
Standard Input/Output, and I/O Redirection
Standard Input and Standard Output
Output Redirection
Input Redirection
Pipes
Filters
Standard Error
More on Commands
Typing More Than One Command on a Line
Sending a Command to the Background
The ps Command
Command Summary
2 What Is the Shell?
The Kernel and the Utilities
The Login Shell
Typing Commands to the Shell
The Shells Responsibilities
Program Execution
Variable and Filename Substitution
I/O Redirection
Hooking up a Pipeline
Environment Control
Interpreted Programming ...