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‎sc/01-hello.sh

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#!/bin/bash
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echo "Hello Guys"
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echo "Welcome to ShellScript"
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echo "This is the first shell script example !!"
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echo "Today date is"
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date
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echo "Shellscript is very easy"
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‎sc/02-comments.sh

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<<Password
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1. configure password authentication
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sudo vi /etc/ssh/sshd_config
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PaswordAuthentication yes # change from no to yes
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sudo systemctl restart sshd && sudo passwd ec2-user
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2. ssh ec2-ser@publicIP
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ssh [email protected]
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Password
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#!/bin/bash
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<<sp
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Title : Learning comment
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description :
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author :myLANDMARK.tech S Legah
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date :08112012
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version :1.0
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Tel :437 215 2483
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pwd
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sp
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<<comment
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This script is for beginners.
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Learn how to write simple script
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Linux is very easy to understand.
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This script was written by LandmarkTechnology
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comment
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echo "example about using multi-line comment"
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#echo "This line is commented""
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#echo "This line is commented"
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echo "This is in Multi line comment section"
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echo "This line aslo in Multi line comment section, it will be ignore"
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COMMENT
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echo "This is after Multiline comments section"

‎sc/03-system_defined_vars.sh

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#!/bin/bash
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#title :
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#description :
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#author :myLANDMARK.tech S Legah
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echo "SHELL is: " $SHELL
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echo "BASH_VERSION is: " $BASH_VERSION
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echo 'HISTSIZE is: '$HISTSIZE
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echo 'SSH_CLIENT is: '$SSH_CLIENT

‎sc/04-user_defined_vars.sh

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#!/bin/bash
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#title :
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#description :
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#author :myLANDMARK.tech S Legah
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#date :08112012
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#version :1.0
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#Tel :437 215 2483
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name="Simon Legah"
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id=08112012
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echo "The name varibale value is: "$name
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echo "The id variable value is: "$id
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‎sc/05-command_line_args1.sh

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#!/bin/bash
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#title :
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#description :
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#author :myLANDMARK.tech S Legah
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#date :08112012
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#version :1.0
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#Tel :437 215 2483
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#Number of arguments on the command line.
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echo '$#:' $#
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#Process number of the current process.
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echo '$$:' $$
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#Display the 3rd argument on the command line, from left to right.
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echo '$3:' $3
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#Display the 10th argument on the command line, from left to right.
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echo '${10}:' ${10}
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#Display the name of the current shell or program.
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echo '$0:' $0
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#Display all the arguments on the command line using * symbol.
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echo '$*:' $*
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#Display all the arguments on the command line using @ symbol.
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echo '$@:' $@
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date
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echo '$?:' $?

‎sc/05-command_line_args2.sh

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#!/bin/bash
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#title :
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#description :
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#author :myLANDMARK.tech S Legah
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#date :08112012
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#version :1.0
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#Tel :437 215 2483
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#if (( $# >= 3 ))
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#if [ $# -gt 3 ]
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#if [ $# -lt 3 ]
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if (( $# == 3 ))
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then
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#Number of arguments on the command line.
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echo '$#:' $#
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#Process number of the current process.
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echo '$$:' $$
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#Display the 3rd argument on the command line, from left to right.
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echo '$3:' $3
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#Display the 10th argument on the command line, from left to right.
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echo '${10}:' ${10}
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#Display the name of the current shell or program.
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echo '$0:' $0
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#Display all the arguments on the command line using * symbol.
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echo '$*:' $*
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#Display all the arguments on the command line using @ symbol.
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echo '$@:' $@
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date
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echo '$?:' $?
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else
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echo "Please Pass the 3 command line args along with script"
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fi

‎sc/07-string.sh

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#!/bin/bash
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#title :
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#description :
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#author :myLANDMARK.tech S Legah
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string_var="Hi Team, My name is Simon Legah, working in MLT, GTA "
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echo "The value of string_var value is: " ${string_var}
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echo "The length of the string is: " ${#string_var}
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echo "The sub string is:" ${string_var:20:14}
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#Index from right end of the string
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echo The sub tring value is: ${string_var: (-8)}
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echo The sub tring value is: ${string_var: -17}
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‎sc/08-arithmetic_operations.sh

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#!/bin/bash
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#title : Arithmetic operations
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expr 3 + 2
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expr 3 - 2
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expr 3 \* 2
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expr 10 / 2
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expr 20 % 3
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echo addition of 3 and 2 is : `expr 3 + 2`
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‎sc/09-arrya.sh

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#!/bin/bash
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#title :
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#description :
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#author :myLANDMARK.tech S Legah
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#date :08112012
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#version :1.0
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#Tel :437 215 2483
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#usage :
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declare -a devopstools
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devopstools[0]=GitHub
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devopstools[1]=Ant
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devopstools[2]=Maven
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devopstools[3]=Tomcat
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devopstools[4]=Wildfly
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devopstools[5]=SonarQube
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#Displaying 1st value
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echo ${devopstools[0]}
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#Displaying 5th value
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echo ${devopstools[4]}
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#Displaying all values
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echo ${devopstools[*]}
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#Displaying all values
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echo ${devopstools[@]}

‎sc/09-read0.sh

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#!/bin/bash
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echo "Please enter your name"
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read name
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echo "Your name is: " $name
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echo please enter 1st number1
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read number1
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echo please enter 2nd number2
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read number2
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echo The sum is `expr $number1 + $number2`

‎sc/1.sh

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‎sc/2.sh

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