The script is available for download from https://gallery.technet.microsoft.com//How-to-rename-all-the-b9b688ae. You can also use Microsoft Script Browser for Windows PowerShell ISE to download the sample with one button click from within your scripting environment.
This script will demonstrate how to rename all the indexes in a standard pattern for SQL Server.
Sometimes, people name an index casually. But when they want to rename all those indexes, it will be difficult to find them all and rename them. This script will provide some help in this respect.
You can find more All-In-One Script Framework script samples at https://aka.ms/onescriptingallery