Search CLI
You can switch between text and image searches, and toggle asynchronous mode by adding --async-mode.
luci-cli search "COVID-19 symptoms" --type text --async-mode --max-results 5
- Change --type to 
textorimage - If you choose asynchronous mode then add it 
--async-mode - If you want to use synchronous then remove it
 
Medical Search
luci-cli medsearch "diabetes treatment guidelines" --email "wbavishekbhattacharjee@gmail.com"
 --max-results 2
- Put query after 
medsearchwhat you want to search. - Write email after 
--emailwhich is mandatory in ERS portal.