How to do case-insensitive multiple replacement using "vi"? -


Actually I want to make the following replacement using vi: 

  Apple-> Orange Apple- & gt; Orange APPLE- & gt; ORANGE   
 Is there a way to do it in one line?   
 
 
 You can use the sed command  
  $ cat os .txt Best Unix Unix UNIX SAD supports "case insensitive" search of "I" or "I"   
 If you need to use vi then this command  
  1, $ s / apple / orange / gi

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