Your string likely means:

ls > newfile.txt

“I want to create a new .txt file from the content available at the Bitly link bit.ly/3xqlkag”

— I cannot browse the internet or access external files unless you explicitly enable the web search feature (on my end). Even then, I cannot open .txt files from Bitly directly. You would need to paste the contents of the text file here for me to analyze or write about.