Search notes:

PowerShell cmdLet Foreach-Object

Execute a script block in a pipeline

The forEach-object cmdLet can be used to invoke a script block within a pipeline.

1 .. 10 | forEach-object { $_ * $_ }

forEach-object can be abbreviated with forEach or %.

It should be noted, however, that foreach is also a statement and that the percent sign also acts as the arithmetic modulus operator.

In PowerShell Core, there is the experimental feature PSForEachObjectParallel to run script blocks in parallel