Question

Instructions

PowerShell Assignment #1

Objective:

• Learn basic Powershell scripting in Windows

Setup:

• A Windows computer with the latest Powershell environment installed

Script #1 – Hello World!

Description:  The classical introductory exercise: Just say "Hello, World!".

Purpose: A "Hello, World!" program is traditionally used to introduce novice programmers to a programming language. It is also to make sure that the interpreter is installed correctly, and that the user understands how to use it.

Instructions:  Complete this assignment to make sure that you know how to start PowerShell and create a new script.

• Write a script that displays the string "Hello, World!"
• Test the script to make sure it operates correctly.
• Save the script in a .ps1 file, this will be one of the files that you submit to D2L
• Take a print screen to show that the script is working correctly
• Submit the script and print screen files.

Script #2 – Leap Year

Description:  Given a year, report if it is a leap year.

Purpose: Learn the use of if statements.

Instructions:  Complete this assignment to make sure that you know how to use if statements in Powershell.

	A leap year in the Gregorian calendar occurs: on every year that is evenly divisible by 4 except every year that is evenly divisible by 100 unless the year is also evenly divisible by 400

• Write a script that prompts a user for a year. After the users enters the year, inform the user if the year is a leap year.
• Test the script to make sure it operates correctly.
• Save the script in a .ps1 file, this will be one of the files that you submit to D2L
• Take a print screen to show that the script is working correctly
• Submit the script and print screen files.

Script #3 – Temp Folder

Description: Find the Windows temp folder and get information about the folder.

Purpose: Learn how to use Environmental variables.

Instructions: Discover the TEMP folder on the local system and basic information about the folder.

• Write a script that finds the temp folder for the system and gets information basic information about the folder.
• Test the script to make sure it operates correctly.
• Save the script in a .ps1 file, this will be one of the files that you submit to D2L
• Take a print screen to show that the script is working correctly
• Submit the script and print screen files.

Answer 1

Script #1 – Hello World!

Following are the Hello World! Power shell script and output

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$str1 = "Hello World!"
write-host $str1

--------------------------------------------------------

First line assigns the value Hello World to str1 and the command write-host prints the str1 value to the console

Script #2 – Leap Year

Following is the Power shell script and output to check a given year is leap year or not

---------------------------------------------------------------------------------

$year=Read-Host -Prompt 'Please enter a year'

foreach ($yr in $Year) {
            if ($yr / 400 -is [int]) {
                Write-Host "$yr is a leap year"
            }

            elseif ($yr / 100 -is [int]) {
                Write-Host "$yr is not a leap year"
            }
            elseif ($yr / 4 -is [int]) {
                Write-Host "$yr is a leap year"
            }
            else {
                Write-Host "$yr is not a leap year"
            }
}

-------------------------------------------------------------------------------

The above script checks that the entered year is divisible by 400,100 and 4. If it is divisible by 400 script prints that it is a leap year.Else it check that given year is divisible by 100 , if yes script prints it is not a leap year. Else check by dividing the year by 4 and if yes prints that the year is a leap year. If all the above conditons are false, script will print that it is not a leap year

Script #3 – Temp Folder

Following are the script and output for display information about the TEMP folder

----------------------------------

get-childitem $Env:TEMP

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