Best Shell Scripting Course

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BEST SHELL SCRIPTING COURSE
B E S T O N L I N E C O U R S E S C O U P O N . C
O M
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PRESENTATION
OVERVIEW
About Shell Scripting Variables in Shell
Scripting Variable declaration Unix Shell
Scripting Contents Standard wildcard Loops in
Shell Scripting Types of loops Test-driving
Shell Scripts Call A Function In Shell Scripting
External Programs Interactive Shell Scripts
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ABOUT SHELL
SCRIPTING
A shell script is known as the human readable
text file which mainly contains the collection of
commands. It can also be manually executed step
by step at the UNIX operating system. Thus the
vi program or any of the UNIX editors out there
which can be mainly used to create the
shell script and store it to the disk for
execution.
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VARIABLES IN SHELL
SCRIPTING
Variables are the primary process of any
script or the program. It is an easy way to
check out the amount of the data in memory which
can be mainly modified. Thus the variable in a
different script can be allotted any values like
a number or the text string.
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VARIABLE
DECLARATION
For the information in the field of UNIX to
create the variable one must place in the
script. VARIABLE_NAMEvalue Hence the
VARIABLE_NAME will be anything the user wants,
and it also contains the letters, numbers as
well as _.
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UNIX SHELL SCRIPTING
CONTENTS
It is very useful in various ways for the many
users as well as Linux system. Thus the commands
can use the wildcards to performing the action
on file which is said to be the more than a file
at a time. The users should know that there are
two different ways are used for the Wildcards.
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STANDARD WILDCARD
T h e y a r e s t a n d a r d w i l d c a r d w h
i c h i s o f t e n u t i l i z e d b y t h e s
h e l l w h e r e a s t h e a l t e r n a t i v
e i s t h e g e n e r a l e x p r e s s i o n s o
n t h e o t h e r s i d e i t i s f a m i l i a
r w i t h t h e m a j o r c o m m a n d s f o
r u s e w i t h m a n i p u l a t i o n a n d t
h e t e x t s e a r c h i n g . F o r e x a m p l
e , i f t h e u s e r
w a n t s t o c r e a t e a f i l e w i l d c a
r d e x p r e s s i o n s
f o r p r o c e s s w i t h t h e n c r e a
t e i t a s
p r o c e s s .
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LOOPS IN SHELL
SCRIPTING
The loop is said to be the powerful tool which is
mainly enabled to run the set of commands
continuously. Thus the while loop is mainly
executing the commands which are given until the
condition remains genuine and until loop will
repeatedly execute until the given condition is
true.
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TYPES OF LOOPS

• There are different types of loops available in
  the shell. They are
• While Loop
• For Loop
• Until Loop
• Select Loop

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TEST-DRIVING
SHELL SCRIPTS
The test command from the UNIX which primarily
evaluates the expression of the parameter. In
most of the past shell implementations, that is
the shell builtin where the external version
also mainly exists. The second form of the
command like brackets will be surrounded by the
blank spaces. The user must help to test the
explicitly for the file names in the shell.
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CALL A FUNCTION IN
SHELL SCRIPTING
Thus the function is mainly enabling the user to
break down the entire functionality of the
script. converted to logical subsections,
smaller and then it can be called as to perform
the specific tasks if they need. Thus the
function is mainly used to carry out
the continuous tasks in an excellent way of
creating the code reuse.
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EXTERNAL PROGRAMS
The external programs are mainly used for the
shell scripts, and there are few building
commands like a test, which and echo are
typical. On the other side, one must know that
the commands are said to be the UNIX utilities
they are cut, expr, grepa and tr. Thus the
backtick is usually connected often with the
external commands.
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INTERACTIVE SHELL
SCRIPTS

• An interactive shell primarily interacts with
  the user input and the user.
• Thus the user types of input where the
• script mainly validates the input to make sure
  which it belongs to the correct format.
• Once the validating is complete with the input,
  the shell script will directly make text
  processing on the string.

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SHELL SCRIPTING
COURSE
Linkable link
DISCOVER HOW TO AUTOMATE COMMAND LINE
TASKS LINUX SHELL PROGRAMMING FOR BEGINNERS BASH
SCRIPTING AND SHELL PROGRAMMING SHELL SCRIPTING
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