Writing files (Set-Content, Out-File) in PowerShell - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output file content after running this script?

Consider this PowerShell script that writes text to a file using Set-Content. What will be the content of 'output.txt' after running it?

PowerShell

Set-Content -Path output.txt -Value "Hello, World!"

A The file 'output.txt' contains the text: Hello, World!

B The file 'output.txt' is empty

C The file 'output.txt' contains the text: Set-Content -Path output.txt -Value "Hello, World!"

D The file 'output.txt' contains the text: "Hello, World!" with quotes

💡 Hint

Set-Content writes the exact string given to the file without adding quotes.

Set-Content writes the string value directly to the file. It does not add quotes or commands, just the text provided.

💻 Command Output

intermediate

What will be the content of 'log.txt' after this script runs?

This script appends text to a file using Out-File. What will 'log.txt' contain after running both commands?

PowerShell

Out-File -FilePath log.txt -InputObject "Start Log" -Encoding utf8
Out-File -FilePath log.txt -InputObject "End Log" -Encoding utf8 -Append

A Only "End Log" in 'log.txt', replacing previous content

B "Start Log" on the first line and "End Log" on the second line in 'log.txt'

C "Start LogEnd Log" on a single line in 'log.txt'

D The file 'log.txt' will be empty

💡 Hint

Out-File overwrites by default unless -Append is used.

The first Out-File writes "Start Log" and overwrites any existing content. The second Out-File appends "End Log" on a new line.

📝 Syntax

advanced

Which option correctly writes multiple lines to a file using Set-Content?

You want to write these three lines to 'notes.txt': Line1, Line2, Line3. Which command does this correctly?

A Set-Content notes.txt -Value "Line1", "Line2", "Line3"

B Set-Content -Path notes.txt -Value "Line1\nLine2\nLine3"

C Set-Content -Path notes.txt -Value @("Line1", "Line2", "Line3")

D Set-Content -Path notes.txt -Value "Line1"; "Line2"; "Line3"

💡 Hint

Set-Content accepts an array of strings to write multiple lines.

Option C passes an array of strings, so each string is written as a separate line. Option C writes a single string with literal \n, not new lines. Option C syntax is invalid. Option C runs separate commands but only the first writes to the file.

🔧 Debug

advanced

Why does this Out-File command fail to append text?

This script is supposed to append "New Entry" to 'data.txt' but overwrites it instead. Why?

PowerShell

Out-File -FilePath data.txt -InputObject "New Entry"

A Because -InputObject is not a valid parameter

B Because Out-File cannot write strings to files

C Because the file path is incorrect

D Because the -Append parameter is missing, so it overwrites the file

💡 Hint

Check the parameters for appending with Out-File.

Out-File overwrites the file by default. To add text without deleting existing content, you must use -Append.

🚀 Application

expert

How to write a UTF8 BOM encoded file with Set-Content?

You want to write the text "Data Export" to 'export.txt' with UTF8 encoding including BOM using Set-Content. Which command does this correctly?

A Set-Content -Path export.txt -Value "Data Export" -Encoding utf8bom

B Set-Content -Path export.txt -Value "Data Export" -Encoding utf8

C Set-Content -Path export.txt -Value "Data Export" -Encoding ascii

D Set-Content -Path export.txt -Value "Data Export"

💡 Hint

UTF8 BOM encoding requires the special encoding name 'utf8bom'.

The -Encoding parameter 'utf8bom' writes UTF8 with BOM. 'utf8' writes UTF8 without BOM. ASCII is a different encoding. Omitting encoding uses default (usually UTF16).