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‎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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‎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:' $0
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#Display all the arguments on the command line using * symbol.
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echo '$*:' $*
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#Display all the arguments on the command line using @ symbol.
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echo '$@:' $@
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date
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echo '$?:' $?

‎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

‎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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‎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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‎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[@]}

‎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`

‎777.sh

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sudo dnf -y config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
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sudo dnf -y repolist -v
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sudo dnf -y install docker-ce-3:18.09.1-3.el7
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sudo systemctl enable --now docker

‎CREATING SSHKEYS IN THE GITHUB VIA AUTOMATION

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#!/bin/bash
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#author : Simon Legah
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#CopyRights : Landmark Technologies
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#Contact : +1 437 215 2483
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echo "Enter your GitHub Personal Access Token:"
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read token
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#echo $token >token.txt
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#cat token.txt
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cat ~/.ssh/id_rsa.pub
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#if condition to validate weather ssh keys are already present or not
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if [ $? -eq 0 ]
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then
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echo "SSH Keys are already present..."
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else
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echo "SSH Keys are are not present..., Create the sshkyes using ssh-keygen command"
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ssh-keygen -t rsa
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echo "Key successfully generated"
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fi
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sshkey=`cat ~/.ssh/id_rsa.pub`
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if [ $? -eq 0 ]
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then
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echo "Copying the key to GitHub account"
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curl -X POST -H "Content-type: application/json" -d "{\"title\": \"SSHKEY\",\"key\": \"$sshkey\"}" "https://api.github.com/user/keys?access_token=$token"
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if [ $? -eq 0 ]
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then
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echo "Successfully copied the token to GitHub"
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exit 0
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else
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echo "Failed"
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exit 1
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fi
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else
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echo "Failure in generating the key"
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exit 1
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fi

‎createuser1.sh

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#!/bin/bash
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# Creating a user
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echo "Please enter the user name for the account you want to create!"
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read userName
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echo "The name you entered is: " $userName
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/usr/sbin/useradd $userName
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/usr/sbin/usermod -G devops $userName
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echo ".......User is created..........."
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echo ".......Now Set the password for ....... $userName"
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passwd $userName

‎createuser2.sh

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#!/usr/bin/env bash
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# Create user and grant sudo access
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if [ $# -ne 1 ]
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then
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echo "Usage: $0 username"
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exit
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else
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USERNAME=$1
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fi
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# creating user
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/usr/sbin/useradd $USERNAME
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passwd $USERNAME
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echo "User has created successfully.."
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echo "Providing sudo access.."
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# Giving sudo access
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sed -i "/NOPASSWD/a\\$USERNAME ALL=(ALL) NOPASSWD: ALL" /etc/sudoers
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echo "Sudo access successfully granted to $USERNAME"

‎cron.txt

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*/2 * * * * /home/devops/scripts/date.sh > /home/devops/scripts/date.log 2>&1
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tee
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ll | tee ab.txt
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ll > ll.txt
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script

‎devops videos

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hh

‎f.txt

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0
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‎ff

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ZZ

‎fn

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echo "Function demo starts.."
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greetfn()
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{
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echo "Hello everyone"
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echo "good morning"
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}
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echo "calling the function"
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greetfn

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