Shell-Scripting/regular_exp at master · tpatil2/Shell-Scripting · GitHub

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#!/bin/bash

#-------------------------------------------

name="Tejas"

echo "This is ${name}'s home"

string="I am a programmer"

echo "${string//programmer/developer}"


#---------------------------------------------
read -p "validate length: " len


pat="^[0-9]{5}$"

if [[ $len =~ $pat ]]; then
	echo "length is five"
else
	echo "length is not valid"
fi


#--------------------------------------------
read -p "Enter two numbers: " num1 num2


sum=$((num1+num2))

echo "$num1 + $num2 = $sum"


read -sp "Enter password: " word


if [[ "$word" == "password" ]]; then
	echo "password is correct"
else
	echo "Incorrect password"
fi
#--------------------------------------------

OIFS="$IFS"
IFS=","

read -p "enter two values seperated by comma: "  num1 num2

num1=${num1//[[:blank:]]/0}
num2=${num2//[[:blank:]]/}

sum=$((num1+num2))

echo "addition of num1 + num2 = $sum"

IFS="$OIFS"#--------------------------------------------