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Powershell - string replacement using regex
Hi All,
I need help in powershell string replacement using regex.
I need to replace a decimal value after a specific string pattern with a new decimal value stored in a variable. Like, in the entire string, I need to replace all occurrences of ‘Version=xxx’ to ‘Version=$NewValue’. I tried the following but it didn’t work.
$New = $Orig.Replace(‘Version=(\d{1,3})’, ‘Version=$NewValue’)
$New = $Orig.Replace(‘Version=(\d*)’, ‘Version=$NewValue’)
Anyone has any suggestions?
Thanks
Nancy
$string = "This is a string with multiple Version=xxx values that need to be replaced."
$newValue = "3.14"
# Replace all occurrences of "Version=xxx" with the new value
$string -replace "Version=xxx", "Version=$newValue"Got it from OpenAI's chatGBT 🙂
Hi nancyvargas,
You can use one of the following methods
- First, define the variables for the old value ("xxx") and the new value:
$OldValue = "xxx"
$NewValue = "your new value here"
Next, use the Replace() method to find and replace all occurrences of the old value with the new value in a string:
$string = "some string with Version=xxx and other text"
$string = $string.Replace($OldValue, $NewValue) - You can also use the -replace operator to do the same thing:
$string = "some string with Version=xxx and other text"
$string = $string -replace $OldValue, $NewValue - If you want to replace all occurrences of "Version=xxx" in a file, you can use the Get-Content cmdlet to read the file into a string, then use the Replace() method or -replace operator as shown above to replace the old value with the new value:
$fileContent = Get-Content "C:\path\to\your\file.txt"
$fileContent = $fileContent.Replace($OldValue, $NewValue)
or
$fileContent = Get-Content "C:\path\to\your\file.txt"
$fileContent = $fileContent -replace $OldValue, $NewValue
Finally, use the Set-Content cmdlet to write the modified string back to the file:
Set-Content "C:\path\to\your\file.txt" -Value $fileContent
I hope this helps.
Regards,
Ruud
- First, define the variables for the old value ("xxx") and the new value:
