PoshTip #18 – Checking for string within string

PoshTip #18 – Checking for string within string

With PowerShell, you can determine whether or not a given substring can be found within another string. You can use the Contains method :

$a = 'mystring'
$d = $a.Contains("string")
$d
True

The Contains method does a case-sensitive search :

$a = 'myString'
$d = $a.Contains("string")
$d
False

So you need to convert both the variable ($a) and the text (string) to lowercase characters :

$a = 'myString'
$d = $a.ToLower().Contains("String".ToLower())
$d
True
About Nicolas 282 Articles
I work as an IT Production Manager, based in Paris (France) with a primary focus on Microsoft technologies. I have 10 years experience in administering Windows Servers. . I am a Microsoft MVP for Cloud & Datacenter Management. I also received the PowerShell Hero 2016 award by PowerShell.0rg. And finally, I am "MCSE: Cloud Platform and Infrastructure", "MCSA: Windows Servers", "Administering & Deploying SCCM", and CheckPoint CCSA certified.