Mastering Windows PowerShell Scripting - Second Edition

Trim, TrimStart, and TrimEnd

The Trim method, by default, removes all white space (spaces, tabs, and line breaks) from the beginning and end of a string. For example:

$string = " 
    This string has leading and trailing white space      " 
$string.Trim() 

The TrimStart and TrimEnd methods limit their operation to either the start or end of the string.

Each of the methods accepts a list of characters to trim. For example:

$string = '*__This string is surrounded by clutter.--#' 
$string.Trim('*_-#') 

The Trim method does not remove a string from the end of another. The string supplied in the previous example ('*_-#') is treated as an array. This can be seen in the definition of the method:

PS> 'string'.TrimOverloadDefinitions ------------------- string ...