Let's consider the below snippet,
Get-ChildItem -Path C:\MyFolder | Select-Object Name, CreationTime, Length
It simply output the folder content with the selected properties. Something like,
What if I want to display the file size in KB ? This is where calcualted properties comes handy.
Get-ChildItem C:\MyFolder | Select-Object Name, @{Name="Size_In_KB";Expression={$_.Length / 1Kb}}
Which produces,
The Expression
is what holds the calculation for calculated property. And yes, it can be anything!