<ruby id="bdb3f"></ruby>

    <p id="bdb3f"><cite id="bdb3f"></cite></p>

      

      <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
        <p id="bdb3f"><cite id="bdb3f"></cite></p>
          

          <pre id="bdb3f"></pre>
          <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>
          

          <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
          <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>
          

          <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>
                <ruby id="bdb3f"></ruby>
                
    


                
  
                                            
                                                                      
        
                
          ThinkChat2.0新版上線，更智能更精彩，支持會話、畫圖、視頻、閱讀、搜索等，送10W Token，即刻開啟你的AI之旅
          廣告
        
                        
                              
  

                

                
    
                
        
                
                            ## 使用echo清空文件內容
> echo  -n  ' ' >  文件名
![](https://img.kancloud.cn/f6/3d/f63db7cf340bc580a17dbe9f4c8c70e6_467x125.png)
其中-n 就是為了去掉空白行
原本可以 如下寫法，但是會有空白行
> echo '' > 文件名
> echo > 文件名

![](https://img.kancloud.cn/4f/a5/4fa535da4facbcae2f0c9864341ada01_405x197.png)
![](https://img.kancloud.cn/14/ac/14acde5bd6a397b32201634ca2b09926_368x198.png)
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







                  <ruby id="bdb3f"></ruby>
                  <p id="bdb3f"><cite id="bdb3f"></cite></p>
                    

                    <p id="bdb3f"><cite id="bdb3f"><th id="bdb3f"></th></cite></p><p id="bdb3f"></p>
                      <p id="bdb3f"><cite id="bdb3f"></cite></p>
                        

                        <pre id="bdb3f"></pre>
                        <pre id="bdb3f"><del id="bdb3f"><thead id="bdb3f"></thead></del></pre>
                        

                        <ruby id="bdb3f"><mark id="bdb3f"></mark></ruby><ruby id="bdb3f"></ruby>
                        <pre id="bdb3f"><pre id="bdb3f"><mark id="bdb3f"></mark></pre></pre><output id="bdb3f"></output><p id="bdb3f"></p><p id="bdb3f"></p>
                        

                        <pre id="bdb3f"><del id="bdb3f"><progress id="bdb3f"></progress></del></pre>
                              <ruby id="bdb3f"></ruby>
                              

哎呀哎呀视频在线观看