Learn how to add Unblock a File to Windows right-click context menu. Use a PowerShell 3.0 commandlet, add an entry to the Registry and you are all set!

When performing routine scripting, it's a frequent need to append rows to the CSV rather than replacing the entire file. To add rows, rather than replacing the file, we can use the Append parameter.

Looking at the signature of a file quickly lets you know whether that file is really what it claims to be. Here's how to tap PowerShell to figure out the file signature.