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powershell replace character in string

OHIOLee answered on July 14, 2022 Popularity 9/10 Helpfulness 3/10

answer powershell replace character in string

powershell replace character in string

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Use the Replace() method on the string itself to perform simple
replacements:



PS > "Hello World".Replace("World", "PowerShell")

Hello PowerShell



Use PowerShell’s regular expression -replace operator to perform more
advanced regular expression replacements:



PS > "Hello World" -replace '(.*) (.*)','$2 $1'

World Hello



Another, less common pitfall is wanting to use characters that have
special meaning to regular expressions as part of your replacement text. For example:



PS > "Power[Shell]" -replace "[Shell]","ful"

Powfulr[fulfulfulfulful]



That’s clearly not what we intended. In regular expressions,
square brackets around a set of characters means
“match any of the characters inside of the square brackets.”
In our example, this translates to “Replace the characters S, h, e, and l with ‘ful’.”

To avoid this, we can use the regular expression escape character to escape
the square brackets:



PS > "Power[Shell]" -replace "\[Shell\]","ful"

Powerful



However, this means knowing all of the regular expression special
characters and modifying the input string.
Sometimes we don’t control the input string,
so the [Regex]::Escape() method comes in handy:



PS > "Power[Shell]" -replace ([Regex]::Escape("[Shell]")),"ful"

Powerful



For extremely advanced regular expression replacement needs,
you can use a script block to accomplish your replacement tasks,
as described in Recipe 31.6. For example, to capitalize the first
character (\w) after a word boundary (\b):



PS > "hello world" -replace '\b(\w)',{ $_.Value.ToUpper() }

Hello World

Popularity 9/10 Helpfulness 3/10 Language powershell

Source: powershellcookbook.com

Tags: character powershell replace string

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Contributed on Jul 14 2022

OHIOLee

0 Answers Avg Quality 2/10

powershell replace character in string

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