Index

A

• abbreviations
  • about / Abbreviations
  • using / Abbreviations
• advanced test
  • double [[ bracket used / Advanced test using [[
• Apache
  • name based Virtual HostsTopicnabout / Apache name-based Virtual Hosts
  • name based Virtual HostsTopicncreating / Apache name-based Virtual Hosts
• Apache name based Virtual Hosts templates
  • creating / Creating the Virtual Hosts template
  • creating, steps / First steps
  • lines, isolating / Isolating lines
  • sed script files / sed script files
• Apache Virtual Hosts / Apache Virtual Hosts
• argument identifier
  • $0 / Running the script with arguments
  • $1 / Running the script with arguments
  • ${10} / Running the script with arguments
  • $# / Running the script with arguments
  • $* / Running the script with arguments
• arguments, Python
  • about / Pythonic arguments
  • supplying / Supplying arguments
  • counting / Counting arguments
• arithmetic operations, double (( brackets used
  • about / Arithmetic operations using ((
  • simple maths / Simple math
  • parameter manipulation / Parameter manipulation
  • standard arithmetic tests / Standard arithmetic tests
• arrays, Perl
  • about / Perl arrays
  • program name, accessing / Program name?
  • argument arrays / Argument arrays
  • elements, counting / Counting elements in an array
  • looping through / Looping through an array
  • creating / Creating arrays
• awk command
  • history / The history behind awk
• awk control file
  • about / Awk control files
  • example / Awk control files
• awk ranges
  • for excluding data / Using awk ranges to exclude data
  • lastlog command / The lastlog command
  • rows, horizontal filtering / Horizontal filtering rows with awk
  • matched rows, counting / Counting matched rows
• awk record separator, manipulating
  • for reporting on XML data / Manipulating the awk record separator to report on XML data
  • Apache Virtual Hosts / Apache Virtual Hosts
  • XML Catalog / XML catalog

B

• backup2.sh
  • creating, with elif keyword / Creating the backup2.sh using elif
• bash
  • vulnerabilities / Bash vulnerabilities
  • about / Bash vulnerabilities
  • command hierarchy / The bash command hierarchy
• bash command hierarchy
  • about / The bash command hierarchy
  • command type / Command type
  • command PATH / Command PATH
• basic script
  • creating, with read command / Basic script using read
• browser data
  • displaying / Displaying the browser data

C

• case statements
  • using / Using case statements
• code snippets
  • using / Using code snippets
  • colors, providing for message interpretation / Bringing color to the terminal
• command
  • types / Command type
• command-line lists
  • used, for creating simple decision / Simple decision paths using command-line lists
  • used, for verifying user input / Verifying user input with lists
• conditional statement, Perl
  • about / Conditional statements in Perl
  • command line lists, replacing / Replacing command line lists
  • if keyword / If and unless
  • unless keyword / If and unless
• conditional statements
  • creating, with if statement / Creating conditional statements using if
• conditions, based on number of fields / Conditions based on the number of fields
• content
  • displaying, from files / Displaying and filtering content from files
  • filtering, from files / Displaying and filtering content from files
• CPUs
  • listing, in system / Listing the number of CPUs in a system
• CSV files
  • parsing / Parsing CSV files, The CSV file
  • about / The CSV file
  • Isolate Catalog entries / Isolating catalog entries

D

• data
  • displaying, from Web logs / Displaying data from web logs
• double [[ bracket
  • using / Advanced test using [[
  • whitespace / Whitespace
  • advanced features / Other advanced features
  • pattern matching / Pattern matching
  • regular expressions / Regular expressions
  • regular expression recipe / Regular expression script

E

• 404 errors
  • summarizing / Summarizing 404 errors
• e-mail logs
  • working with / Working with e-mail logs
• echo command
  • using, with options / Using echo with options
• elif keyword
  • using / More conditions with elif
  • used, for creating backup2.sh / Creating the backup2.sh using elif
• else keyword
  • used, for extending if condition / Extending if with else
• entered text visibility
  • controlling / Controlling the visibility of entered text
• entries
  • selecting, by date / Selecting entries by date

F

• files
  • testing / Testing files
  • input, reading / Reading input from files
  • content, displaying / Displaying and filtering content from files
  • content, filtering / Displaying and filtering content from files
  • writing, with Python / Using Python to write to files
• file types
  • testing / Testing file types
• for loops
  • about / For loops
  • executing / For loops
• front-end
  • building, with grep command / Script – building a front-end with grep
• functions
  • about / Introducing functions
  • parameters, passing to / Passing parameters to functions
  • values, returning from / Returning values from functions
  • using, in menus / Using functions in menus
  • using, with Perl / Using functions within Perl
  • prompting, for user input / Prompt for user input
  • creating / Creating the function

G

• gedit
  • configuring / Configuring gedit
• grep command
  • used, for building front-end / Script – building a front-end with grep
  • used, for displaying text / Using grep to display text

H

• Hello Dolly!
  • about / Hello Dolly!
  • script, running with arguments / Running the script with arguments
  • correct quotes, importance / The importance of correct quotes
• Hello World! script
  • about / Hello World!
• Hello World, Python
  • writing / Saying Hello World the Python way
• Hello World script, Perl
  • creating / Hello World
• highest ranking IP address
  • displaying / Displaying the highest ranking IP address
• HTTP access codes
  • summarizing / Summarizing HTTP access codes
• HTTPD log file format
  • about / The HTTPD log file format
  • fields / The HTTPD log file format

I

• if condition
  • extending, with else keyword / Extending if with else
• if statement
  • used, for creating conditional statements / Creating conditional statements using if
• input
  • reading, from files / Reading input from files
• integers
  • testing / Testing integers
• interface
  • received data, displaying / Displaying received data on an interface

L

• lines
  • isolating / Isolating lines
• logic
  • adding / Adding logic
• loop
  • controlling / Controlling the loop
  • until loops / While loops and until loops
  • while loops / While loops and until loops

M

• menus
  • functions, using / Using functions in menus
• MySQL/MariaDB database server / Version 3 – MySQL/MariaDB

N

• named elements / Introducing functions
• nano
  • configuring / Configuring nano
• number of entered characters
  • limiting / Limiting the number of entered characters

O

• operator menus
  • creating / Creating operator menus
• options, vim configuration
  • showmode / Configuring vim
  • nohlsearch / Configuring vim
  • autoindent / Configuring vim
  • tabstop=4 / Configuring vim
  • expandtab / Configuring vim
  • syntax on / Configuring vim
• output
  • formatting / Formatting output

P

• parameter defaults
  • providing / Providing parameter defaults
  • variables / Variables
  • special parameters / Special parameters
  • setting / Setting defaults
• parameter expansion / When in doubt – Quote!
• parameters
  • quoting / When in doubt – Quote!
  • passing, to functions / Passing parameters to functions
• Perl
  • about / What is Perl?
  • script, creating / Hello World
  • arrays / Perl arrays
  • conditional statement / Conditional statements in Perl
  • functions, using with / Using functions within Perl
• ping command / Version 1 – ping
• printf function / Formatting output
• Python
  • about / What is Python?
  • Hello World / Saying Hello World the Python way
  • arguments / Pythonic arguments
  • used, for writing to files / Using Python to write to files

R

• read command
  • used, for creating basic script / Basic script using read
• read prompts
  • used, for enhancing scripts / Enhancing scripts with read prompts
• regular expressions (RE)
  • using / Using regular expressions
  • alternate spellings, working with / Working with alternate spellings
  • words with four consecutive vowels, searching / How many words have four consecutive vowels?
  • anchors / RE anchors

S

• script comment
  • about / Script comments
• scripts
  • creating / Creating and executing scripts
  • executing / Creating and executing scripts, Executing the script
  • Hello World! / Hello World!
  • exit status, checking / Checking the exit status
  • unique name, ensuring / Ensuring a unique name
  • Hello Dolly! / Hello Dolly!
  • name, printing / Printing the script name
  • debugging / Debugging your scripts
  • comments / Script comments
  • enhancing, with read prompts / Enhancing scripts with read prompts
• sed command
  • about / Understanding the basics of sed
  • substituting / Substituting command
  • file, editing with -i option / Editing the file
• sed script files / sed script files
• simple decision
  • creating, with command-line lists / Simple decision paths using command-line lists
• simple scripts
  • building / Enhancing learning with simple scripts
  • backup script / Backing-up with scripts
  • used for connecting to server / Connecting to a server
  • ping command / Version 1 – ping
  • SSH / Version 2 – SSH
  • MySQL/MariaDB / Version 3 – MySQL/MariaDB
• SSH / Version 2 – SSH
• strings
  • testing / Testing strings

T

• test
  • running / Recapping test
  • square brackets / Square brackets as not seen before
• test shell builtin
  • using / Using the test shell builtin
  • strings, testing / Testing strings
  • integers, testing / Testing integers
  • file types, testing / Testing file types
• text
  • displaying, with grep command / Using grep to display text
  • received data, displaying on interface / Displaying received data on an interface
  • user account data, displaying / Displaying user account data
  • CPUs, listing in system / Listing the number of CPUs in a system
  • CSV files, parsing / Parsing CSV files
• text editors
  • preparing, for scripting / Preparing text editors for scripting
  • vim configuration / Configuring vim
  • nano configuration / Configuring nano
  • gedit configuration / Configuring gedit

U

• until loop
  • about / While loops and until loops
• user account data
  • displaying / Displaying user account data
• user input
  • verifying, with command-line lists / Verifying user input with lists
  • reading / Reading user input
• users
  • filtering, by UID / Further filtering to display users by UID

V

• values
  • returning, from functions / Returning values from functions
• vi command
  • col / Abbreviations
• vim
  • configuring / Configuring vim
• virtual host creation
  • automating / Automating Virtual Host creation
  • data, prompting for / Prompting for data during site creation

W

• Web logs
  • data, displaying from / Displaying data from web logs
  • entries, selecting from date / Selecting entries by date
  • 404 errors, summarizing / Summarizing 404 errors
  • HTTP access codes, summarizing / Summarizing HTTP access codes
• while loop
  • about / While loops and until loops
• white-space / Significant whitespace

X

• XML Catalog / XML catalog