-replace operator in PowerShell - Mini Project: Build & Apply

Using the -replace Operator in PowerShell

📖 Scenario: You work in a small office where you keep a list of employee email addresses. Some emails have an old domain that needs to be updated to a new domain.

🎯 Goal: You will create a list of email addresses, set the old domain to replace, use the -replace operator to update the emails, and then display the updated list.

📋 What You'll Learn

Create a list of email addresses with exact values

Create a variable for the old domain string

Use the -replace operator to update the domain in all emails

Print the updated list of email addresses

💡 Why This Matters

🌍 Real World

Updating email domains is common when companies rebrand or merge. Automating this saves time and avoids mistakes.

💼 Career

Knowing how to use the <code>-replace</code> operator helps in scripting tasks for system administration and data cleanup.

1

Create the list of email addresses

Create a list called emails with these exact email addresses: "[e-mail]", "[e-mail]", and "[e-mail]".

PowerShell

# Create the list of emails
# Your code here

Need a hint?

Use @() to create an array in PowerShell.

2

Set the old domain to replace

Create a variable called oldDomain and set it to the string "oldcompany.com".

PowerShell

$emails = @("[e-mail]", "[e-mail]", "[e-mail]")
# Create the variable oldDomain
# Your code here

Need a hint?

Use = to assign the string to the variable.

3

Replace the old domain with the new domain

Create a new list called updatedEmails by replacing oldDomain with "newcompany.com" in each email using the -replace operator.

PowerShell

$emails = @("[e-mail]", "[e-mail]", "[e-mail]")
$oldDomain = "oldcompany.com"
# Replace oldDomain with "newcompany.com" in emails using -replace
# Your code here

Need a hint?

Use -replace with the syntax: $list -replace old, new.

4

Display the updated email addresses

Print the updatedEmails list to show the new email addresses.

PowerShell

$emails = @("[e-mail]", "[e-mail]", "[e-mail]")
$oldDomain = "oldcompany.com"
$updatedEmails = $emails -replace $oldDomain, "newcompany.com"
# Print updatedEmails
# Your code here

Need a hint?

Simply output the variable updatedEmails to display the list.