Gnuplot绘制txt文件

Question

shong2015:Plot student$ ls
Example_Gnuplot_Script.txt  data.dat.txt

shong2015:Plot student$ gnuplot

G N U P L O T
Version 4.6 patchlevel 5    last modified February 2014
Build System: Darwin x86_64

Copyright (C) 1986-1993, 1998, 2004, 2007-2014
Thomas Williams, Colin Kelley and many others

gnuplot home:     http://www.gnuplot.info
faq, bugs, etc:   type "help FAQ"
immediate help:   type "help"  (plot window: hit 'h')

Terminal type set to 'unknown'

gnuplot> plot 'Example_Gnuplot_Script.txt','data.dat.txt'
              ^
         Bad data on line 1 of file Example_Gnuplot_Script.txt
gnuplot> 

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你好我对BASH和Gnuplot都很新。我一直在寻找在很多地方学习，但我无法真正解决问题。

1. 如何加载脚本和数据的txt文件？
2. Bad data on line 1 of file ...
出了什么问题

我真的很感激一些帮助！感谢。