File permissions on Linux/Unix with .NET Core

Question

I am trying to learn how to set file permissions on Linux/Unix with .NET Core. I already found a question on here that points me in the direction of System.IO.FileSystem, b

Answer 1

I solved this problem by just starting a new process and executing bash chmod commands.

Example:

public static void Exec(string cmd)
{
    var escapedArgs = cmd.Replace("\"", "\\\"");
        
    using var process = new Process
    {
        StartInfo = new ProcessStartInfo
        {
            RedirectStandardOutput = true,
            UseShellExecute = false,
            CreateNoWindow = true,
            WindowStyle = ProcessWindowStyle.Hidden,
            FileName = "/bin/bash",
            Arguments = $"-c \"{escapedArgs}\""
        }
    };

    process.Start();
    process.WaitForExit();
}

and then:

Exec("chmod 644 /path/to/file.txt");

You can also use this Exec method to run any other type of bash commands.