# chatgpt > Shell script to use OpenAI's ChatGPT and DALL-E from the terminal. > More information: . - Start in chat mode: `chatgpt` - Give a [p]rompt to answer to: `chatgpt --prompt "{{What is the regex to match an email address?}}"` - Start in chat mode using a specific [m]odel (default is `gpt-3.5-turbo`): `chatgpt --model {{gpt-4}}` - Start in chat mode with an [i]nitial prompt: `chatgpt --init-prompt "{{You are Rick, from Rick and Morty. Respond to questions using his mannerism and include insulting jokes.}}"` - Pipe the result of a command to `chatgpt` as a prompt: `echo "{{How to view running processes on Ubuntu?}}" | chatgpt` - Generate an image using DALL-E: `chatgpt --prompt "{{image: A white cat}}"`