Hello once again Monks, I hope this will be my last question for some time. My file looks something like this: 
Class control
priority 5 
Class voip
priority 30 
Class video
priority 40 


Class control
priority 10 
Class voip
priority 25 
Class video
priority 45

[download]
What I need to do is keep the first occurrance of the word 'priority', but substitute duplicate occurrences before the blank lines. Basically, it should look something like this: 
Class control
priority 5 
Class voip
bandwidth 30 
Class video
bandwidth 40 

Class control
priority 10 
Class voip
bandwidth 25 
Class video
bandwidth 45

[download]
While I know I can use 'sed' to replace it, I need to keep the first occurrance of it in every paragraph, for lack of a better term. I'm not even sure if this is possible, since it will have to keep every first occurance per paragraph. Also, this will be part of a 600+ line script, so I didn't add the code that got me to this point either. Any ideas will be greatly appreciated, I don't even know where to start on this.

In reply to Replacing duplicate string by ddrew78

Title:
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