Revision of EmailValidation.sh

1 file changed, 55 insertions

EmailValidation.sh(file created)

		@@ -0,0 +1,55 @@
1	+	#!/bin/bash
2	+
3	+	#Email Format Validation:
4	+	#- Uses a regular expression to check if the email address format is valid.
5	+
6	+	#Domain Existence Check:
7	+	#- Uses the dig command to look up the domain's DNS records.
8	+	#- Ensures the domain has a valid DNS record.
9	+
10	+	#Input and Validation:
11	+	#- Prompts the user to enter an email address.
12	+	#- Extracts the domain from the email address.
13	+	#- Validates the email format and checks if the domain exists.
14	+	#- Displays appropriate messages based on the validation and check results.
15	+
16	+	# Function to validate the email format
17	+	function validate_email_format() {
18	+	local email="$1"
19	+
20	+	if [[ "$email" =~ ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$ ]]; then
21	+	return 0
22	+	else
23	+	echo "Invalid email format."
24	+	return 1
25	+	fi
26	+	}
27	+
28	+	# Function to check if the email domain exists
29	+	function check_domain_exists() {
30	+	local domain="$1"
31	+
32	+	if dig +short "$domain" \| grep -q '^[0-9]'; then
33	+	return 0
34	+	else
35	+	echo "Domain does not exist."
36	+	return 1
37	+	fi
38	+	}
39	+
40	+	# Get email input from the user
41	+	read -p "Enter email: " email
42	+
43	+	# Extract domain from email
44	+	domain=$(echo "$email" \| awk -F '@' '{print $2}')
45	+
46	+	# Validate email format and check domain existence
47	+	if validate_email_format "$email"; then
48	+	if check_domain_exists "$domain"; then
49	+	echo "Email is valid and domain exists."
50	+	else
51	+	echo "Email is valid, but domain does not exist."
52	+	fi
53	+	else
54	+	echo "Invalid email format. Please try again."
55	+	fi

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