System.PlatformDetection.ParseOsReleaseFile C# (CSharp) Method

        private static IdVersionPair ParseOsReleaseFile()
        {
            Debug.Assert(RuntimeInformation.IsOSPlatform(OSPlatform.Linux));

            IdVersionPair ret = new IdVersionPair();
            ret.Id = "";
            ret.VersionId = "";

            if (File.Exists("/etc/os-release"))
            {
                foreach (string line in File.ReadLines("/etc/os-release"))
                {
                    if (line.StartsWith("ID=", System.StringComparison.Ordinal))
                    {
                        ret.Id = line.Substring("ID=".Length);
                    }
                    else if (line.StartsWith("VERSION_ID=", System.StringComparison.Ordinal))
                    {
                        ret.VersionId = line.Substring("VERSION_ID=".Length);
                    }
                }
            }

            string versionId = ret.VersionId;
            if (versionId.Length >= 2 && versionId[0] == '"' && versionId[versionId.Length - 1] == '"')
            {
                // Remove Quotes.
                ret.VersionId = versionId.Substring(1, versionId.Length - 2);
            }

            return ret;
        }