cat "Herro world" > ~test.txt curl -X POST -d @~test.txt http://beta.etherpad.org/post

or a one liner curl -X POST -d "Herro world" http://beta.etherpad.org/post

Very useful for posting up log/settings files.

Etherpad will return the Pad URL

Plugin at https://github.com/johnmclear/ep_post_data