Splitting unix output

I am trying to extract an address from a file.

grep keyword /path/to/file

      

        
        
        
      

    

how i find the line of code i want. The result is something like

var=http://address

      

        
        
        
      

    

Is there a way to only get the part immediately after the =

ie http://address

, given that the i greping for keyword is in var

and http://address

parts