First PowerShell command - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the simplest PowerShell command to display text on the screen?

The simplest command is Write-Output 'Hello, World!'. It prints the text inside the quotes to the screen.

beginner

What does the Write-Output command do in PowerShell?

It sends the specified text or object to the output stream, which usually means it shows on the screen.

beginner

How do you run a PowerShell command?

Open PowerShell, type the command, and press Enter. The command runs and shows the result.

beginner

Why is PowerShell useful for beginners?

It lets you automate tasks by typing simple commands. You can see results right away, which helps learning.

beginner

What is the output of this command?
Write-Output 'Welcome to PowerShell'

It prints:
Welcome to PowerShell

Which command prints text to the screen in PowerShell?

A Write-Output

B Print-Text

C Show-Message

D Display-Text

Write-Output is the correct command to display text in PowerShell.

How do you run a command in PowerShell?

A Right-click and select Run

B Type it and press Enter

C Double-click the command

D Save and open the file

You run a command by typing it in PowerShell and pressing Enter.

What will this command do?
Write-Output 'Hello'

A Deletes Hello

B Saves Hello to a file

C Prints Hello on the screen

D Does nothing

It prints the word Hello on the screen.

Which of these is NOT a PowerShell command to show text?

A Print-Text

B Echo

C Write-Output

D Write-Host

Print-Text is not a valid PowerShell command.

Why is PowerShell good for beginners?

A It is a game

B It requires no typing

C It only runs on phones

D It lets you automate tasks with simple commands

PowerShell helps beginners automate tasks by typing easy commands.

Explain how to run your first PowerShell command and what it does.

Think about the steps from opening the program to seeing the result.

Describe the purpose of the Write-Output command in PowerShell.

What happens when you want to see a message in PowerShell?

Practice

1. What does the PowerShell command Write-Output "Hello, World!" do?

easy

A. It opens a new PowerShell window.

B. It saves the text to a file automatically.

C. It displays the text "Hello, World!" on the screen.

D. It deletes the text from the screen.

Solution

1. Step 1: Understand Write-Output command

   The Write-Output command sends the specified text or data to the screen or pipeline.

2. Step 2: Analyze the given command

   The command Write-Output "Hello, World!" prints the text "Hello, World!" on the screen.

3. Final Answer:

   It displays the text "Hello, World!" on the screen. -> Option C

4. Quick Check:

   Write-Output prints text = D [OK]

Hint: Write-Output prints text to screen or pipeline [OK]

Common Mistakes:

• Thinking it saves text to a file automatically
• Confusing output with deleting or opening windows
• Assuming it runs scripts instead of showing text

2. Which of the following is the correct syntax to display the number 123 in PowerShell?

easy

A. Write-Output "123"

B. Write-Output 123

C. Write-Output (123)

D. Write-Output [123]

Solution

1. Step 1: Check syntax for Write-Output with numbers

   Write-Output can print numbers directly without quotes or brackets.

2. Step 2: Evaluate each option

   Write-Output 123 uses Write-Output 123 which is correct syntax to print number 123.

3. Final Answer:

   Write-Output 123 -> Option B

4. Quick Check:

   Number without quotes prints correctly = B [OK]

Hint: Numbers print without quotes in Write-Output [OK]

Common Mistakes:

• Putting numbers inside brackets or square brackets
• Using quotes unnecessarily for numbers
• Confusing parentheses as required syntax

3. What will be the output of this PowerShell command?

Write-Output (5 + 3)

medium

A. 8

B. 5 + 3

C. (5 + 3)

D. Write-Output (5 + 3)

Solution

1. Step 1: Understand expression evaluation in Write-Output

   Parentheses cause the expression inside to be evaluated before output.

2. Step 2: Calculate the expression (5 + 3)

   5 + 3 equals 8, so Write-Output prints 8.

3. Final Answer:

   8 -> Option A

4. Quick Check:

   Write-Output evaluates expressions = A [OK]

Hint: Parentheses evaluate expressions before printing [OK]

Common Mistakes:

• Thinking it prints the expression as text
• Confusing output with command text
• Ignoring parentheses effect on evaluation

4. Identify the error in this PowerShell command:

Write-Output Hello World

medium

A. Missing quotes around text with spaces

B. Write-Output cannot print text

C. Command should be lowercase

D. No error, command is correct

Solution

1. Step 1: Check syntax for strings with spaces

   Text with spaces must be enclosed in quotes to be treated as one string.

2. Step 2: Analyze given command

   Write-Output Hello World treats Hello and World as separate arguments causing error or unexpected output.

3. Final Answer:

   Missing quotes around text with spaces -> Option A

4. Quick Check:

   Text with spaces needs quotes = C [OK]

Hint: Put quotes around multi-word text in Write-Output [OK]

Common Mistakes:

• Assuming Write-Output can't print text
• Ignoring quotes for multi-word strings
• Thinking command case matters in PowerShell

5. You want to print the result of adding two numbers, 7 and 4, using a single PowerShell command. Which command should you use?

hard

A. Write-Output 7, 4

B. Write-Output "7 + 4"

C. Write-Output 7 4

D. Write-Output (7 + 4)

Solution

1. Step 1: Understand how to calculate expressions in Write-Output

   Using parentheses causes PowerShell to evaluate the expression before printing.

2. Step 2: Evaluate each option

   Write-Output (7 + 4) uses Write-Output (7 + 4), which calculates 11 and prints it.

3. Final Answer:

   Write-Output (7 + 4) -> Option D

4. Quick Check:

   Parentheses evaluate math before output = A [OK]

Hint: Use parentheses to calculate before printing [OK]

Common Mistakes:

• Putting math inside quotes prints text, not result
• Writing multiple arguments without parentheses
• Using commas prints array, not sum