(Optional, string) Type of index that wildcard expressions can match. If the request can target data streams, this argument determines whether wildcard .... Jan 21, 2021 — Prerequisites; Using PowerShell to Check If File Exists; Using Test-Path ... Tip: The -ErrorAction Ignore parameter suppresses the error (will not .... Dec 24, 2018 — Your script may require a log or configuration file. Learn how to use file test operators to tell if a file exists to make sure it exists.