String methods (.Split, .Replace, .Trim) in PowerShell - Cheat Sheet & Quick Revision

Recall & Review

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What does the .Split() method do in PowerShell?

The .Split() method breaks a string into an array of smaller strings based on a separator you choose, like a space or comma.

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How does .Replace() work in PowerShell strings?

The .Replace() method finds all instances of a specific text in a string and changes them to new text you provide.

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What is the purpose of .Trim() in PowerShell?

.Trim() removes any spaces or invisible characters from the start and end of a string, cleaning it up.

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Example: What is the result of 'apple,banana,orange'.Split(',')?

It creates an array with three items: 'apple', 'banana', and 'orange'.

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Example: What does ' hello world '.Trim() return?

It returns 'hello world' without the spaces at the start and end.

What does 'one,two,three'.Split(',')[1] return?

A 'two'

B 'three'

C 'one'

D An error

The .Split(',') breaks the string into ['one', 'two', 'three']. Index 1 is 'two'.

What will 'hello world'.Replace('world', 'PowerShell') output?

A 'hello PowerShell'

B 'hello world'

C 'PowerShell world'

D 'hello'

The .Replace() changes 'world' to 'PowerShell' in the string.

Which method removes spaces from the start and end of a string?

A .Split()

B .Replace()

C .Trim()

D .Length

.Trim() removes spaces from both ends of a string.

What does 'a b c'.Split(' ') produce?

A ['a b c']

B ['a', 'b', 'c']

C ['abc']

D Error

Splitting by space breaks the string into separate words.

If you want to replace all 'x' with 'y' in a string, which method do you use?

A .ToUpper()

B .Split()

C .Trim()

D .Replace()

.Replace() changes all occurrences of one text to another.

Explain how you would split a sentence into words and then remove spaces from each word using PowerShell string methods.

Think about splitting first, then trimming each piece.

Describe a real-life situation where you might use .Replace() in a PowerShell script.

Imagine editing text automatically to save time.