To handle a large-scale task like processing or generating posts for from a .txt file, you generally need a script that reads the file line-by-line to manage memory efficiently.
Use curl -O [URL] to fetch your user data file.
If you have a file named users.txt with one username or ID per line, you can use this script to iterate through them and send a "post" or message via an API:
If you need a generic post to share about this large-scale data task,