MSAdoti

var previewRenderUtility = new PreviewRenderUtility();
var gameObject = previewRenderUtility.InstantiatePrefabInScene(prefab);
            
previewRenderUtility.BeginStaticPreview(rect); //初期化

SetupParticles(gameObject); //ここでなんやかんやParticleSystemの設定をします
previewRenderUtility.AddSingleGO(gameObject);
        
previewRenderUtility.camera.farClipPlane = distance * 2;
previewRenderUtility.camera.transform.rotation = Quaternion.Euler(10, 0, 0);
previewRenderUtility.camera.transform.position = new Vector3(0, なんかいい感じの高さ, いい感じの距離);

previewRenderUtility.Render();

var texture2D = previewRenderUtility.EndStaticPreview(); //出力

previewRenderUtility.Cleanup(); //使い終わったら破棄してあげましょう　破棄しないとSceneが残り続けます

return texture2D;

[InitializeOnLoad]
public class Startup
{
    static readonly string shPath =
        Application.dataPath + "/Hoge.sh";

    static Startup()
    {
#if UNITY_EDITOR_OSX
        StartExecForMac();
#endif
        AssetDatabase.Refresh();
    }

    static void StartExecForMac()
    {
        var p = new Process();
        p.StartInfo.FileName = "/bin/zsh";
        p.StartInfo.Arguments = $"-c \"zsh {shPath}\" ";
        p.StartInfo.Verb = "RunAs";
        p.StartInfo.UseShellExecute = true;
        p.Start();
        p.WaitForExit();
    }
}

using UnityEngine;

public class ShadedWireframe : MonoBehaviour
{
    // Attach this script to a camera, this will make it render in wireframe
    void OnPreRender()
    {
        GL.wireframe = true;
    }

    void OnPostRender()
    {
        GL.wireframe = false;
    }
}

using System;
using System.IO;
using System.Diagnostics;
using UnityEditor;
using UnityEngine;

namespace Hogehoge
{
    [InitializeOnLoad]
    public class Startup
    {
        private static readonly string batPath = Application.dataPath + "/hoge.bat";
        private static Process p;
        
        static Startup()
        {
            if (canDo)
            {
                ExecuteBat();
                AssetDatabase.Refresh();
            }
        }
        
        private static void ExecuteBat()
        {
            p = new Process();
            p.StartInfo.FileName = batPath;
            p.StartInfo.Verb = "RunAs";
            p.StartInfo.UseShellExecute = true;
            p.Start();
            p.WaitForExit();  //これを忘れると処理終了を待たずに何回も実行されることになるので注意
        }
    }
}