獲取內容替換滿弦

Question

所以，我有以下命令：

(Get-Content $path).Replace($current, $new) | Set-Content $path 

它正常工作，改變一個字符串，但可以說我有在$path以下字符串："This is a test. testing was done."

如果我設置$current至"test"和$new至"Blah"。我會得到"This is a Blah. Blahing was done."

我如何使它只改變"test"而不是"testing"所以我的字符串將是："This is a blah. testing was done."？

Answer 1

$path = "This is a test. testing was done." 
$current = "\btest\b" 
$new = "Blah" 
$path -replace ($current, $new) 

\ b是正則表達式字邊界

Answer 2

而不是使用Replace()方法，請嘗試使用-replace運算符 - 此運算符使用Get-Help about_Regular_Expressions（鏈接到MSDN）中描述的正則表達式。