Using sed to modify a header -


Assumed I had a file containing the header: 

  exm2240_T exm4561_g Exm1916_0 exm490_1 rs67856512_A I was thinking how to show headers using SAD:  
  exm2240 exm4561 exm1916 exm490 rs67856512    
 
 
 Simply remove the underscore and the following character:  
  sed ' S / _ // g '

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