dartokloning / EmailValidation.sh

#!/bin/bash #Email Format Validation: #- Uses a regular expression to check if the email address format is valid. #Domain Existence Check: #- Uses the dig command to look up the domain's DNS records. #- Ensures the domain has a valid DNS record. #Input and Validation: #- Prompts the user to enter an email address. #- Extracts the domain from the email address. #- Validates the email format and checks if the domain exists. #- Displays appropriate messages based on the validation and check results. # Function to validate the email format function validate_email_format() { local email="$1" if [[ "$email" =~ ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$ ]]; then return 0 else echo "Invalid email format." return 1 fi } # Function to check if the email domain exists function check_domain_exists() { local domain="$1" if dig +short "$domain" | grep -q '^[0-9]'; then return 0 else echo "Domain does not exist." return 1 fi } # Get email input from the user read -p "Enter email: " email # Extract domain from email domain=$(echo "$email" | awk -F '@' '{print $2}') # Validate email format and check domain existence if validate_email_format "$email"; then if check_domain_exists "$domain"; then echo "Email is valid and domain exists." else echo "Email is valid, but domain does not exist." fi else echo "Invalid email format. Please try again." fi