SharePoint PowerShell脚本以修剪新行

Question

I have a column in a SharePoint list with many newlines, including in the beginning of text. I want to remove only first two newlines ie those in the beginning of the text as they are meaningless.

Is there a way to do it with the trim function? I can't use replace as it will replace all the newlines. How do I do it?

Answer 1

String-objects have a TrimStart() -Method that you could use to remove whitespace and newlines.

$s = @"


  test
"@

#Trim all whitespace and newlines before the text.
$s.TrimStart()

Output:

test

The solution above may remove too much. To remove only two newlines (0-2 newlines), try the regex below.

$s = @"


  test
"@

$s -replace '^[\n\r]{0,4}'

Output:

  test

I'm not sure how you're input will look line (multi-line string vs. string-array, newline and/or Carriage Return etc.) so the answer may need to be modified.