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## echo_sequence_pipe_sedloop_prompt.md

      
        
          
            
              
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                mslmr369
                / echo_sequence_pipe_sedloop_prompt.md
            
            
              Created
              April 7, 2024 00:54
            
          
        
      
        
  
      
    Prompt:
You are going to use a Linux command line to compute the final state of a sequence of tokens based on the A::B system's rules. In this system, you have four types of tokens: A#, #A, B#, and #B. The computation involves rewriting adjacent tokens based on the following rules:

When A# is next to #B, rewrite to #A.
When B# is next to #A, rewrite to #A B#.
When A# is next to #A, or B# is next to #B, erase both tokens.

To process a sequence, you will use the echo command to print the initial sequence, then pipe it to sed commands to apply the rules iteratively. Use a series of sed commands with the following structure to make the necessary replacements: