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	•  Table of Contents •  Index •  Examples	UNIX® Shells by Example Fourth Edition By Ellie Quigley   Publisher : Prentice Hall PTR Pub Date : September 24, 2004 ISBN : 0-13-147572-X Pages : 1200

		Copyright
		Preface
			ACKNOWLEDGMENTS
		Chapter 1.  Introduction to UNIX/Linux Shells
			Section 1.1.  What Is UNIX? What Is Linux? A Little History
			Section 1.2.  Definition and Function of a Shell
			Section 1.3.  History of the Shell
			Section 1.4.  System Startup and the Login Shell
			Section 1.5.  Processes and the Shell
			Section 1.6.  The Environment and Inheritance
			Section 1.7.  Executing Commands from Scripts
		Chapter 2.  Shell Programming QuickStart
			Section 2.1.  Taking a Peek at Shell Scripts
			Section 2.2.  Sample Scripts: Comparing the Major Shells
			Section 2.3.  The C and TC Shell Syntax and Constructs
			Section 2.4.  The Bourne Shell Syntax and Constructs
			Section 2.5.  The Korn Shell Constructs
			Section 2.6.  The Bash Shell Constructs
		Chapter 3.  Regular Expressions and Pattern Matching
			Section 3.1.  Regular Expressions
			Section 3.2.  Combining Regular Expression Metacharacters
		Chapter 4.  The grep Family
			Section 4.1.  The grep Command
			Section 4.2.  grep Examples with Regular Expressions
			Section 4.3.  grep with Options
			Section 4.4.  grep with Pipes
			Section 4.5.  egrep (Extended grep)
			Section 4.6.  fgrep (Fixed grep or Fast grep)
			Section 4.7.  Linux and GNU grep
			Section 4.8.  GNU Basic grep (grep –G) with Regular Expressions
			Section 4.9.  grep –E or egrep (GNU Extended grep)
			Section 4.10.  Fixed grep (grep –F and fgrep)
			Section 4.11.  Recursive grep (rgrep, grep –R)
			Section 4.12.  GNU grep with Options
			Section 4.13.  grep with Options (UNIX and GNU)
			LAB 1: grep EXERCISE
		Chapter 5.  sed, the Streamlined Editor
			Section 5.1.  What Is sed ?
			Section 5.2.  Versions of sed
			Section 5.3.  How Does sed Work?
			Section 5.4.  Regular Expressions
			Section 5.5.  Addressing
			Section 5.6.  Commands and Options
			Section 5.7.  Error Messages and Exit Status
			Section 5.8.  Metacharacters
			Section 5.9.  sed Examples
			Section 5.10.  sed Scripting
			LAB 2: sed EXERCISE
		Chapter 6.  The awk Utility
			Section 6.1.  What's awk? What's nawk? What's gawk?
			Section 6.2.  awk's Format
			Section 6.3.  How awk Works
			Section 6.4.  Formatting Output
			Section 6.5.  awk Commands from Within a File
			Section 6.6.  Records and Fields
			Section 6.7.  Patterns and Actions
			Section 6.8.  Regular Expressions
			Section 6.9.  awk Commands in a Script File
			Section 6.10.  Review
			LAB 3: awk EXERCISE
			Section 6.11.  Comparison Expressions
			Section 6.12.  Review
			LAB 4: awk EXERCISE
			Section 6.13.  Variables
			Section 6.14.  Redirection and Pipes
			Section 6.15.  Pipes
			Section 6.16.  Review
			LAB 5: nawk EXERCISE
			Section 6.17.  Conditional Statements
			Section 6.18.  Loops
			Section 6.19.  Program Control Statements
			Section 6.20.  Arrays
			Section 6.21.  awk Built-In Functions
			Section 6.22.  Built-In Arithmetic Functions
			Section 6.23.  User-Defined Functions (nawk)
			Section 6.24.  Review
			LAB 6: nawk EXERCISE
			Section 6.25.  Odds and Ends
			LAB 7: nawk EXERCISE
			Section 6.26.  awk Built-In Functions
		Chapter 7.  The Interactiven Bourne Shell
			Section 7.1.  Introduction
			Section 7.2.  The Environment
			Section 7.3.  The Command Line
			Section 7.4.  Shell Metacharacters (Wildcards)
			Section 7.5.  Filename Substitution
			Section 7.6.  Variables
			Section 7.7.  Quoting
			Section 7.8.  Command Substitution
			Section 7.9.  An Introduction to Functions
			Section 7.10.  Standard I/O and Redirection
			Section 7.11.  Pipes
			Section 7.12.  The here document and Input
		Chapter 8.  Programming the Bourne Shell
			Section 8.1.  Introduction
			Section 8.2.  Reading User Input
			Section 8.3.  Arithmetic
			Section 8.4.  Positional Parameters and Command-Line Arguments
			Section 8.5.  Conditional Constructs and Flow Control
			Section 8.6.  Looping Commands
			Section 8.7.  Functions
			Section 8.8.  Trapping Signals
			Section 8.9.  The Command Line
			Section 8.10.  Shell Invocation Options
			LAB 8: BOURNE SHELL—GETTING STARTED
			LAB 9: METACHARACTERS
			LAB 10: REDIRECTION
			LAB 11: FIRST SCRIPT
			LAB 12: COMMAND-LINE ARGUMENTS
			LAB 13: GETTING USER INPUT
			LAB 14: CONDITIONAL STATEMENTS
			LAB 15: CONDITIONALS AND FILE TESTING
			LAB 16: THE case STATEMENT
			LAB 17: LOOPS
			LAB 18: FUNCTIONS
		Chapter 9.  The Interactive C and TC Shells
			Section 9.1.  Introduction
			Section 9.2.  The Environment
			Section 9.3.  The C/TC Shell Command Line
			Section 9.4.  Aliases
			Section 9.5.  Manipulating the Directory Stack
			Section 9.6.  Job Control
			Section 9.7.  Shell Metacharacters
			Section 9.8.  Filename Substitution
			Section 9.9.  Redirection and Pipes
			Section 9.10.  Variables
			Section 9.11.  Command Substitution
			Section 9.12.  Quoting
			Section 9.13.  New Features of the Interactive TC Shell
			Section 9.14.  The TC Shell Command Line
			Section 9.15.  TC Shell Command, Filename, and Variable Completion
			Section 9.16.  TC Shell Spelling Correction
			Section 9.17.  TC Shell Aliases
			Section 9.18.  TC Shell Job Control
			Section 9.19.  Printing the Values of Variables in the TC Shell
			Section 9.20.  TC Shell Built-In Commands
			LAB 19: THE TC SHELL—GETTING STARTED
			LAB 20: HISTORY
			LAB 21: SHELL METACHARACTERS
			LAB 22: REDIRECTION
			LAB 23: VARIABLES AND ARRAYS
		Chapter 10.  Programming the C and TC Shells
			Section 10.1.  Introduction
			Section 10.2.  Reading User Input
			Section 10.3.  Arithmetic
			Section 10.4.  Debugging Scripts
			Section 10.5.  Command-Line Arguments
			Section 10.6.  Conditional Constructs and Flow Control
			Section 10.7.  Looping Commands
			Section 10.8.  Interrupt Handling
			Section 10.9.  setuid Scripts
			Section 10.10.  Storing Scripts
			Section 10.11.  Built-In Commands
			LAB 24: C/TC SHELLS—GETTING STARTED
			LAB 25: SHELL METACHARACTERS
			LAB 26: REDIRECTION
			LAB 27: FIRST SCRIPT
			LAB 28: GETTING USER INPUT
			LAB 29: COMMAND-LINE ARGUMENTS
			LAB 30: CONDITIONALS AND FILE TESTING
			LAB 31: THE switch STATEMENT
			LAB 32: LOOPS
		Chapter 11.  The Interactive Korn Shell
			Section 11.1.  Introduction
			Section 11.2.  The Environment
			Section 11.3.  The Command Line
			Section 11.4.  Commenting and Filename Expansion
			Section 11.5.  Aliases
			Section 11.6.  Job Control
			Section 11.7.  Metacharacters
			Section 11.8.  Filename Substitution (Wildcards)
			Section 11.9.  Variables
			Section 11.10.  Quoting
			Section 11.11.  Command Substitution
			Section 11.12.  Functions
			Section 11.13.  Standard I/O and Redirection
			Section 11.14.  Pipes
			Section 11.15.  Timing Commands
		Chapter 12.  Programming the Korn Shell
			Section 12.1.  Introduction
			Section 12.2.  Reading User Input
			Section 12.3.  Arithmetic
			Section 12.4.  Positional Parameters and Command-Line Arguments
			Section 12.5.  Conditional Constructs and Flow Control
			Section 12.6.  Looping Commands
			Section 12.7.  Arrays
			Section 12.8.  Functions
			Section 12.9.  Trapping Signals
			Section 12.10.  Coprocesses
			Section 12.11.  Debugging
			Section 12.12.  The Command Line
			Section 12.13.  Security
			Section 12.14.  Built-In Commands
			Section 12.15.  Korn Shell Invocation Arguments
			LAB 33: KORN SHELL—GETTING STARTED
			LAB 34: HISTORY
			LAB 35: ALIASES AND FUNCTIONS
			LAB 36: SHELL METACHARACTERS
			LAB 37: TILDE EXPANSION, QUOTES, AND COMMAND SUBSTITUTION
			LAB 38: REDIRECTION
			LAB 39: JOB CONTROL
			LAB 40: WRITING THE info SHELL SCRIPT
			LAB 41: VARIABLE EXPANSION OF SUBSTRINGS
			LAB 42: THE lookup SCRIPT
			LAB 43: USING typeset
			LAB 44: THE if/else CONSTRUCT AND THE let COMMAND
			LAB 45: THE case STATEMENT
			LAB 46: THE select LOOP
			LAB 47: AUTOLOADING FUNCTIONS
		Chapter 13.  The Interactive Bash Shell
			Section 13.1.  Introduction
			Section 13.2.  The Environment
			Section 13.3.  The Command Line
			Section 13.4.  Job Control
			Section 13.5.  Command-Line Shortcuts
			Section 13.6.  Aliases
			Section 13.7.  Manipulating the Directory Stack
			Section 13.8.  Metacharacters (Wildcards)
			Section 13.9.  Filename Substitution (Globbing)
			Section 13.10.  Variables
			Section 13.11.  Quoting
			Section 13.12.  Command Substitution
			Section 13.13.  Arithmetic Expansion
			Section 13.14.  Order of Expansion
			Section 13.15.  Arrays
			Section 13.16.  Functions
			Section 13.17.  Standard I/O and Redirection
			Section 13.18.  Pipes
			Section 13.19.  Shell Invocation Options
			Section 13.20.  Shell Built-In Commands
			LAB 48: bash SHELL—GETTING STARTED
			LAB 49: JOB CONTROL
			LAB 50: COMMAND COMPLETION, HISTORY, AND ALIASES
			LAB 51: SHELL METACHARACTERS
			LAB 52: REDIRECTION
			LAB 53: VARIABLES
		Chapter 14.  Programming the Bash Shell
			Section 14.1.  Introduction
			Section 14.2.  Reading User Input
			Section 14.3.  Arithmetic
			Section 14.4.  Positional Parameters and Command-Line Arguments
			Section 14.5.  Conditional Constructs and Flow Control
			Section 14.6.  Looping Commands
			Section 14.7.  Functions
			Section 14.8.  Trapping Signals
			Section 14.9.  Debugging
			Section 14.10.  The Command Line
			Section 14.11.  bash Options
			Section 14.12.  Shell Built-In Commands
			LAB 54: bash SHELL—FIRST SCRIPT
			LAB 55: COMMAND-LINE ARGUMENTS
			LAB 56: GETTING USER INPUT
			LAB 57: CONDITIONAL STATEMENTS
			LAB 58: CONDITIONALS AND FILE TESTING
			LAB 59: THE case STATEMENT
			LAB 60: LOOPS
			LAB 61: FUNCTIONS
		Chapter 15.  Debugging Shell Scripts
			Section 15.1.  Introduction
			Section 15.2.  Style Issues
			Section 15.3.  Types of Errors
			Section 15.4.  Probable Causes for Syntax Errors
			Section 15.5.  Tracing with Shell Options and the set Command
			Section 15.6.  Summary
		Chapter 16.  The System Administrator and the Shell
			Section 16.1.  Introduction
			Section 16.2.  The Superuser
			Section 16.3.  Becoming a Superuser with the su Command
			Section 16.4.  Boot Scripts
			Section 16.5.  Summary
		Appendix A.  Useful UNIX/Linux Utilities for Shell Programmers
			apropos—searches the whatis database for strings
			arch—prints the machine architecture (see uname -m)
			at, batch—executes commands at a later time
			awk—pattern scanning and processing language
			banner—makes posters
			basename—with a directory name delivers portions of the pathname
			bash—GNU Bourne Again Shell
			bc—processes precision arithmetic
			bdiff—compares two big files
			cal—displays a calendar
			cat—concatenates and displays files
			chfn—changes the finger information
			chmod—changes the permissions mode of a file
			chown—changes owner of file
			chsh—changes your login shell
			clear—clears the terminal screen
			cmp—compares two files
			compress—compress, uncompress, zcat compress, uncompress files, or display expanded files
			cp—copies files
			cpio—copies file archives in and out
			cron—the clock daemon
			crypt—encodes or decodes a file
			cut—removes selected fields or characters from each line of a file
			date—displays the date and time or sets the date
			dd—converts a file while copying it
			diff—compares two files for differences
			dos, xdos, dosexec, dosdebug—a Linux DOS emulator that runs MS-DOS and MS-DOS programs under Linux
			df—summarizes free disk space
			du—summarizes disk usage
			echo—echoes arguments
			egrep—searches a file for a pattern using full regular expressions
			expr—evaluates arguments as an expression
			fgrep—searches a file for a character string
			file—determines the type of a file by looking at its contents
			find—finds files
			finger—displays information about local and remote users
			fmt—simple text formatters
			fold—folds long lines
			ftp—file transfer program
			free—displays amount of free and used memory in the system
			fuser—identifies processes using files or sockets
			gawk—pattern scanning and processing language
			gcc, g++—GNU project C and C++ Compiler (v2.7)
			getopt(s)—parses command-line options
			grep—searches a file for a pattern
			groups—prints group membership of user
			gzip, gunzip, zcat—compresses or expands files
			head—outputs the first ten lines of a file(s)
			host—prints information about specified hosts or zones in DNS
			id—prints the username, user ID, group name, and group ID
			jsh—the standard, job control shell
			kill—sends a signal to terminate one or more processes
			killall—kills processes by name
			less—opposite of more
			line—reads one line
			ln—creates hard links to files
			logname—gets the name of the user running the process
			look—displays lines beginning with a given string
			lp—sends output to a printer (AT&T)
			lpr—sends output to a printer (UCB)
			lpstat—prints information about the status of the LP print service (AT&T)
			lpq—prints information about the status of the printer (UCB)
			ls—lists contents of directory
			mail, rmail—reads mail or sends mail to users
			mailx—interactive message processing system
			make—maintains, updates, and regenerates groups of related programs and files
			man—formats and displays the online manual pages
			manpath—determines user's search path for man pages
			mesg—permits or denies messages resulting from the write command
			mkdir—creates a directory
			more—browses or pages through a text file
			mtools—utilities to access DOS disks in UNIX
			mv—moves or renames files
			nawk—pattern scanning and processing language
			newgrp—logs into a new group
			news—prints news items
			nice—runs a command at low priority
			nohup—makes commands immune to hangups and quits
			od—octal dump
			pack, pcat, unpack—compresses and expands files
			passwd—changes the login password and password attributes
			paste—merges same lines of several files or subsequent lines of one file
			pcat—(see pack)
			pine—a Program for Internet News and E-mail
			pg—displays files one page at a time
			pr—prints files
			ping—reports if a remote system is reachable and alive
			ps—reports process status
			pstree—displays a tree of processes
			pwd—displays the present working directory name
			quota—displays users' disk usage and limits
			rcp—remote file copy
			rdate—gets the date and time via the network
			rgrep—a recursive, highlighting grep program
			rlogin—remote login
			rm—removes files from directories
			rmdir—removes a directory
			rsh—starts a remote shell
			ruptime—shows the host status of local machines
			rwho—who is logged in on local machines
			script—creates a typescript of a terminal session
			sed—streamlined editor
			size—prints section sizes in bytes of object files
			sleep—suspends execution for some number of seconds
			sort—sorts and/or merges files
			spell—finds spelling errors
			split—splits a file into pieces
			strings—finds any printable strings in an object or binary file
			stty—sets the options for a terminal
			su—become superuser or another user
			sum—calculates a checksum for a file
			sync—updates the superblock and sends changed blocks to disk
			tabs—sets tab stops on a terminal
			tail—displays the tail end of a file
			talk—allows you to talk to another user
			tar—stores and retrieves files from an archive file, normally a tape device
			tee—replicates the standard output
			telnet—communicates with a remote host
			test—evaluates an expression
			time—displays a summary of time used by this shell and its children
			timex—times a command; reports process data and system activity
			top—displays top CPU processes
			touch—updates access time and/or modification time of a file
			tput—initializes a terminal or queries the terminfo database
			tr—translates characters
			true—provides successful exit status
			tsort—topological sort
			tty—gets the name of the terminal
			umask—sets file-creation mode mask for permissions
			uname—prints name of current machine
			uncompress—restores files to their original state after they have been compressed using the compress command
			uniq—reports on duplicate lines in a file
			units—converts quantities expressed in standard scales to other scales
			unpack—expands files created by pack
			uucp—copies files to another system, UNIX-to-UNIX system copy
			uuencode, uudecode—encodes a binary file into ASCII text in order to send it through e-mail, or converts it back into its original form
			wc—counts lines, words, and characters
			what—extracts SCCS version information from a file by printing information found after the @(#) pattern
			which—locates a command and displays its pathname or alias (UCB)
			whereis—locates the binary, source, and manual page files for a command (UCB)
			who—displays who is logged on the system
			write—writes a message to another user
			xargs—constructs an argument list(s) and executes a command
			zcat—uncompresses a compressed file to standard output; Same as uncompress –c
			zipinfo—lists detailed information about a ZIP archive
			zmore—file perusal filter for crt viewing of compressed text
		Appendix B.  Comparison of the Shells
			Section B.1.  The Shells Compared
			Section B.2.  tcsh versus csh
			Section B.3.  bash versus sh
		CD-ROM Warranty
		About the CD-ROM
		Index

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