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: Convert all lowercase letters to uppercase in 'input.txt'
conversations.from: gpt
conversations.value: ```bash
  tr 'a-z' 'A-Z' < input.txt > output.txt
  ```