//刷新字体缓存
  fc-cache -fv ~/.fonts
  
  
  //查看系统中的中文字体
  fc-list : lang=zh-cn

  {$ifdef linux}
    familyItem := FontCollection.Family[Font.Name];
    if familyItem=nil then
    begin
      lfname:=Font.Name;
      //中文字体名称
      if SameText(lfname,'宋体') then
        lfname:='SimSun'
      else if SameText(lfname,'黑体') then
        lfname:='SimHei'
      else if SameText(lfname,'楷体') then
        lfname:='KaiTi'
      else if SameText(lfname,'仿宋_GB2312') then
        lfname:='FangSong_GB2312'
      else if SameText(lfname,'楷体_GB2312') then
        lfname:='KaiTi_GB2312'
      else if SameText(lfname,'幼圆') then
        lfname:='YouYuan'
      else if SameText(lfname,'新宋体') then
        lfname:='NSimSun'
      else if SameText(lfname,'隶书') then
        lfname:='LiSu'
      else if SameText(lfname,'微软雅黑') then
        lfname:='Microsoft YaHei UI';
      familyItem := FontCollection.Family[lfname];
      if familyItem=nil then
      begin
        //中文字体乱码 fastreport4格式
        lfname:=UTF8ToCP936(Font.Name);
        if SameText(lfname,'宋体') then
          lfname:='SimSun'
        else if SameText(lfname,'黑体') then
          lfname:='SimHei'
        else if SameText(lfname,'楷体') then
          lfname:='KaiTi'
        else if SameText(lfname,'仿宋_GB2312') then
          lfname:='FangSong_GB2312'
        else if SameText(lfname,'楷体_GB2312') then
          lfname:='KaiTi_GB2312'
        else if SameText(lfname,'幼圆') then
          lfname:='YouYuan'
        else if SameText(lfname,'新宋体') then
          lfname:='NSimSun'
        else if SameText(lfname,'隶书') then
          lfname:='LiSu'
        else if SameText(lfname,'微软雅黑') then
          lfname:='Microsoft YaHei UI';
        familyItem := FontCollection.Family[lfname];
        if familyItem = nil then
        begin
            familyItem := FontCollection.Family[SwapFontName];
            if familyItem = nil then
              raise Exception.CreateFmt('Cant swap font 1.%s 2.%s 3.%s',[Font.Name,lfname,SwapFontName]);
        end;
      end;
    end;
    Result := familyItem.FamilyName;
    {$else}
    familyItem := FontCollection.Family[Font.Name];
    if familyItem = nil then
    begin
      familyItem := FontCollection.Family[SwapFontName];
      if familyItem = nil then
        raise Exception.Create('Cant swap font');
    end;
    Result := familyItem.FamilyName;
    {$endif}