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Double-quoting the backslash (\) character
• 
Double-spacing a text file, using sed
* * *
-e File exists test
echo
Feeding commands down a pipe
• 
Setting a variable using command substitution
• 
/bin/echo, external echo command
• 
elif, Contraction of else and if
else
Encrypting files, using openssl
esac, keyword terminating case construct
Environmental variables
-eq , is-equal-to integer comparison test
Eratosthenes, Sieve of, algorithm for generating prime numbers
Escaped characters, special meanings of
Within $' ... ' string expansion
• 
Used with Unicode characters
• 
/etc/fstab (filesystem mount) file
/etc/passwd (user account) file
$EUID, Effective user ID
eval, Combine and evaluate expression(s), with variable expansion
Effects of, Example script
• 
Forces reevaluation of arguments
• 
And indirect references
• 
Risk of using
• 
Using eval to convert array elements into a command list
• 
Using eval to select among variables
• 
Evaluation of octal/hex constants within [[ ... ]]
exec command, using in redirection
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
875
Adding text to pdf in preview - insert text into PDF content in C#.net, ASP.NET, MVC, Ajax, WinForms, WPF
XDoc.PDF for .NET, providing C# demo code for inserting text to PDF file
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Adding text to pdf in preview - VB.NET PDF insert text library: insert text into PDF content in vb.net, ASP.NET, MVC, Ajax, WinForms, WPF
Providing Demo Code for Adding and Inserting Text to PDF File Page in VB.NET Program
adding text fields to pdf; how to enter text in a pdf document
Exercises
Exit and Exit status
exit command
• 
Exit status (exit code, return status of a command)
Table, Exit codes with special meanings
Anomalous
Out of range
Pipe exit status
Specified by a function return
Successful, 0
/usr/include/sysexits.h, system file listing C/C++ standard exit codes
• 
Export, to make available variables to child processes
Passing a variable to an embedded awk script
• 
expr, Expression evaluator
Substring extraction
• 
Substring index (numerical position in string)
• 
Substring matching
• 
Extended Regular Expressions
? (question mark) Match zero / one characters
• 
( ... ) Group of expressions
• 
\{ N \} "Curly" brackets, escaped, number of character sets to match
• 
+Character match
• 
* * *
factor, decomposes an integer into its prime factors
Application: Generating prime numbers
• 
false, returns unsuccessful (1) exit status
Field, a group of characters that comprises an item of data
Files / Archiving
File descriptors
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
876
C# PDF insert image Library: insert images into PDF in C#.net, ASP
viewer component supports inserting image to PDF in preview without adobe this technical problem, we provide this C#.NET PDF image adding control, XDoc
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C# PDF Page Insert Library: insert pages into PDF file in C#.net
applications. Support adding and inserting one or multiple pages to existing PDF document. Forms. Ability to add PDF page number in preview. Offer
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Closing
n<&- Close input file descriptor n
0<&-, <&- Close stdin
n>&- Close output file descriptor n
1>&-, >&- Close stdout
• 
File handles in C, similarity to
• 
File encryption
find
{} Curly brackets
• 
\; Escaped semicolon
• 
Filter
Using - with file-processing utility as a filter
• 
Feeding output of a filter back to same filter
• 
Floating point numbers, Bash does not recognize
fold, a filter to wrap lines of text
Forking a child process
for loops
Functions
Arguments passed referred to by position
• 
Capturing the return value of a function using echo
• 
Colon as function name
• 
Definition must precede first call to function
• 
Exit status
• 
Local variables
and recursion
• 
Passing an array to a function
• 
Passing pointers to a function
• 
Positional parameters
• 
Recursion
• 
Redirecting stdin of a function
• 
return
Multiple return values from a function, example script
Returning an array from a function
• 
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
877
C# Create PDF Library SDK to convert PDF from other file formats
C#.NET using this PDF document creating toolkit, if you need to add some text and draw Besides, using this PDF document metadata adding control, you
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C# TIFF: TIFF Editor SDK to Read & Manipulate TIFF File Using C#.
Easy to generate image thumbnail or preview for Tiff 1. Support embedding, removing, adding and updating ICCProfile. 2. Render text to text, PDF, or Word file.
add text to pdf without acrobat; add text boxes to a pdf
Return range limits, workarounds
Shift arguments passed to a function
• 
Unusual function names
• 
* * *
Games and amusements
Anagrams
• 
Anagrams, again
• 
Bingo Number Generator
• 
Crossword puzzle solver
• 
Crypto-Quotes
• 
Dealing a deck of cards
• 
Fifteen Puzzle
• 
Horse race
• 
Knight's Tour
• 
"Life" game
• 
Magic Squares
• 
Music-playing script
• 
• Nim
Pachinko
• 
Perquackey
• 
Petals Around the Rose
• 
Podcasting
• 
Poem
• 
Speech generation
• 
Towers of Hanoi
Graphic version
Alternate graphic version
• 
getopt, external command for parsing script command-line arguments
Emulated in a script
• 
getopts, Bash builtin for parsing script command-line arguments
$OPTIND / $OPTARG
• 
Global variable
Globbing, filename expansion
Handling filenames correctly
• 
Wild cards
• 
Will not match dot files
• 
Golden Ratio (Phi)
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
878
VB.NET PDF insert image library: insert images into PDF in vb.net
smart and mature PDF image adding component of As String = Program.RootPath + "\\" 1.pdf" Dim doc New PDFDocument(inputFilePath) ' Get a text manager from
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C# PowerPoint - Insert Blank PowerPoint Page in C#.NET
This C# .NET PowerPoint document page inserting & adding component from RasterEdge is written in managed C# code and designed particularly for .NET class
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-ge , greater-than or equal integer comparison test
-gt , greater-than integer comparison test
groff, text markup and formatting language
Gronsfeld cipher
$GROUPS, Groups user belongs to
gzip, compression utility
* * *
Hashing, creating lookup keys in a table
Example script
• 
head, echo to stdout lines at the beginning of a text file
help, gives usage summary of a Bash builtin
Here documents
Anonymous here documents, using :
Commenting out blocks of code
Self-documenting scripts
• 
bc in a here document
• 
cat scripts
• 
Command substitution
• 
ex scripts
• 
Function, supplying input to
• 
Here strings
Calculating the Golden Ratio
Prepending text
As the stdin of a loop
Using read
• 
Limit string
! as a limit string
Closing limit string may not be indented
Dash option to limit string, <<-LimitString
• 
Literal text output, for generating program code
• 
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
879
C# Word - Insert Blank Word Page in C#.NET
This C# .NET Word document page inserting & adding component from RasterEdge is written in managed C# code and designed particularly for .NET class applications
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C# PowerPoint - How to Process PowerPoint
slides/pages in the simplest procedures, for instance, using online clear C# methods to add, insert or delete any specific PowerPoint slide, adding & burning
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Parameter substitution
Disabling parameter substitution
• 
Passing parameters
• 
Temporary files
• 
Using vi non-interactively
• 
History commands
$HOME, user's home directory
Homework assignment solver
$HOSTNAME, system host name
* * *
$Id parameter, in rcs (Revision Control System)
if [ condition ]; then ... test construct
if-grep, if and grep in combination
Fixup for if-grep test
• 
$IFS, Internal field separator variable
Defaults to whitespace
• 
Integer comparison operators
in, keyword preceding [list] in a for loop
Initialization table, /etc/inittab
Inline group, i.e., code block
Interactive script, test for
I/O redirection
Indirect referencing of variables
New notation, introduced in version 2 of Bash ( example script)
• 
iptables, packet filtering and firewall utility
Usage example
• 
Example script
• 
Iteration
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
880
* * *
Job IDs, table
jot, Emit a sequence of integers. Equivalent to seq.
Random sequence generation
• 
Just another Bash hacker!
* * *
Keywords
error, if missing
• 
kill, terminate a process by process ID
Options (-l, -9)
• 
killall, terminate a process by name
killall script in /etc/rc.d/init.d
* * *
lastpipe shell option
-le , less-than or equal integer comparison test
let, setting and carrying out arithmetic operations on variables
C-style increment and decrement operators
• 
Limit string, in a here document
$LINENO, variable indicating the line number where it appears in a script
Link, file (using ln command)
Invoking script with multiple names, using ln
• 
symbolic links, ln -s
• 
List constructs
And list
• 
Or list
• 
Local variables
and recursion
• 
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
881
Localization
Logical operators (&&, ||, etc.)
Logout file, the ~/.bash_logout file
Loopback device, mounting a file on a block device
Loops
break loop control command
• 
continue loop control command
• 
C-style loop within double parentheses
for loop
while loop
• 
do (keyword), begins execution of commands within a loop
• 
done (keyword), terminates a loop
• 
for loops
for arg in [list]; do
Command substitution to generate [list]
Filename expansion in [list]
Multiple parameters in each [list] element
Omitting [list], defaults to positional parameters
Parameterizing [list]
Redirection
• 
in, (keyword) preceding [list] in a for loop
• 
Nested loops
• 
Running a loop in the background, script example
• 
Semicolon required, when do is on first line of loop
for loop
while loop
• 
until loop
until [ condition-is-true ]; do
• 
while loop
while [ condition ]; do
Function call inside test brackets
• 
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
882
Multiple conditions
Omitting test brackets
Redirection
while read construct
Which type of loop to use
• 
Loopback devices
In /dev directory
• 
Mounting an ISO image
• 
-lt , less-than integer comparison test
* * *
m4, macro processing language
$MACHTYPE, Machine type
Magic number, marker at the head of a file indicating the file type
Makefile, file containing the list of dependencies used by make command
man, manual page (lookup)
Man page editor (script)
• 
mapfile builtin, loads an array with a text file
Math commands
Meta-meaning
Morse code training script
Modulo, arithmetic remainder operator
Application: Generating prime numbers
• 
Mortgage calculations, example script
* * *
-n String not null test
Named pipe, a temporary FIFO buffer
Example script
• 
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
883
nc, netcat, a network toolkit for TCP and UDP ports
-ne, not-equal-to integer comparison test
Negation operator, !, reverses the sense of a test
netstat, Network statistics
Network programming
nl, a filter to number lines of text
Noclobber, -C option to Bash to prevent overwriting of files
NOT logical operator, !
null variable assignment, avoiding
* * *
-o Logical OR compound comparison test
Obfuscation
Colon as function name
• 
Homework assignment
• 
Just another Bash hacker!
• 
octal, base-8 numbers
od, octal dump
$OLDPWD Previous working directory
openssl encryption utility
Operator
Definition of
• 
Precedence
• 
Options, passed to shell or script on command line or by set command
Or list
Or logical operator, ||
* * *
Parameter substitution
Advanced Bash-Scripting Guide
Appendix T. ASCII Table
884
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