regex - How to replace any character (e.g. ":") with new line in bash variable pattern substitution? -


I would like to use variable pattern replacement in $ PATH to replace ":" 

 < Code> echo $ {PATH /: / "& lt; what's here & gt;"}   
 I tried:  
  $ echo {PATH /: /    
 P> You can use just quoted strings just like anywhere else.  
  "$ {PATH //: /}"   
 this:  
  echo "$ {PATH / (You probably want to replace the colon everywhere, not just the first event. Therefore, the  //   
 > No  / .)

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