Umbraco-CMS/src/Umbraco.Core/EnvironmentHelper.cs

using System;
using Umbraco.Extensions;

namespace Umbraco.Cms.Core
{
    /// <summary>
    /// Currently just used to get the machine name for use with file names
    /// </summary>
    internal class EnvironmentHelper
    {
        /// <summary>
        /// Returns the machine name that is safe to use in file paths.
        /// </summary>
        public static string FileSafeMachineName => Environment.MachineName.ReplaceNonAlphanumericChars('-');

    }
}