Check file extension

Question

I am using the following PowerShell code and I need to check its extension in the if condition

foreach ($line in $lines) { $extn = $line.Split("{.}")[1] if ($extn -eq "xml" ) { } } 

Is there an easy way to check string extensions in a PowerShell script in case of strings?

Answer 1

You can simply use the GetExtension function from System.IO.Path :

 foreach ($line in $lines) { $extn = [IO.Path]::GetExtension($line) if ($extn -eq ".xml" ) { } } 

Demo:

 PS > [IO.Path]::GetExtension('c:\dir\file.xml') .xml PS > [IO.Path]::GetExtension('c:\dir\file.xml') -eq '.xml' True PS > [IO.Path]::GetExtension('Test1.xml') # Also works with just file names .xml PS > [IO.Path]::GetExtension('Test1.xml') -eq '.xml' True PS > 

Answer 2

Using

 if ($line -Like "*.xml") { ... } 

See PowerShell comparison operators .