Using awk to print characters of specific index on a line -


OK, so I know that $: 

 is used to specify specific line arguments It is easy to print. I  $ cat file hello world $ awk '{print $ 1}' file hello   
 But if I want to print between 2 to 8 characters? Or 3 to 7? Is it possible to awk?  
  
 
 
  awk '{print substr ($ 0,2,6)}' file

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