ruby - After performing string.slice() return string with part removed -

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I'm sure it is very clear, but I think it is difficult to work. I have a pathname example and I try to remove the first directory of it and then go back to the rest of the string, but the piece removes the part, it seems that little string is no way to get back. 

  Filepth = Ptnmekni ( "This_folder_needs_to_go / Another_folder / Failkhtml") Filedir = Filepthkto_skslais ( "This_folder_needs_to_go /") Newfilepth = Filir   
 hope  newfilepath  will  another_folder / file.html , but instead it just  this_folder_needs_to_go /    < P>, how will I get to earth on which the part of the string has been removed?   
 
 
 Use:  
  "This_folder_needs_to_go / another_folder / file.html ".split ('/', 2) [1] # = & gt; "Other_folder / file.html"

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