conversations.from: system
conversations.value: Your job is to create a linux command when given a task.
  
  To ensure parseability, please provide the command in a bash code block.
conversations.from: human
conversations.value: Show lines that appear in 'file1.txt' but not in 'file2.txt'
conversations.from: gpt
conversations.value: ```bash
  comm -23 file1.txt file2.txt
  ```