发表新帖
发表新帖

How to extract data from html table in shell script?

前端 未结
关注
6 1453
[愿得一人]
[愿得一人] 2020-11-30 11:42

I am trying to create a BASH script what would extract the data from HTML table. Below is the example of table from where I need to extract data:


        

          6条回答        


        
    
                    
  • 
            
            
    
                         
                 -上瘾入骨i 
              
              
    
                
                   -上瘾入骨i
                                             
                
                
                (楼主)
            
              
                  
    
                2020-11-30 12:13
              
    

            
    
            
    
              
              

    There are a lot of ways of doing this but here's one:
    


    grep '^
::g'  \
    -e 's:::g' \
    -e 's:::g' \
    -e 's:


        
      
      
      
' < $FILENAME \
| sed \
    -e 's:
: :g' \
| cut -c2-



You could use more sed(1) (-e 's:^ ::') instead of the cut -c2- to remove the leading space but cut(1) doesn't get as much love as it deserves. And the backslashes are just there for formatting, you can remove them to get a one liner or leave them in and make sure that they're immediately followed by a newline.



The basic strategy is to slowly pull the HTML apart piece by piece rather than trying to do it all at once with a single incomprehensible pile of regex syntax.



Parsing HTML with a shell pipeline isn't the best idea ever but you can do it if the HTML is known to come in a very specific format. If there will be variation then you'd be better with with a real HTML parser in Perl, Ruby, Python, or even C.

    

             

                                                        

            
            

              
                
                0
              
                   
                
               讨论(0)
              
                                                  
              
              

                          
             
       
          
              

                                       




            

                         
          
                              			
        
        
        

          

            
            

              
              

            
    


                                 
              

            

                          
    

        
         

                
                

                  
                

                

                   看不清?
                

              

                                  

                    
   
                 
             
              
提交回复

            

          

        

      
       
      
    
    

          
 
     
 

        
热议问题