Introduction

With File.SetAttributes we can modify some file permissions, such as ReadOnly or ReadWrite, but we can't set Executable (a.k.a. 7) permission. I think we have everything we need on FileStatus.Unix.cs so we can do something like:

File.SetAttributes(path, FileAttributes.Executable);

It should call chmod setting a 7.

Usage

Some possible usage is when you need to download a zip file. You know that you have an app inside, but you need to change the mode to 7 to be able to execute it.