Facebook cover changer

Should be very easy for facebook developers: I need: 1) a web page where users login using facebook api. Software asks from data and appropriate permissions and stores them in a mysql db. 2) a way, using curl from the command line (I'll call it with a cronjob), to post an url on user's timeline 3) a way, using curl from the command line (I'll call it with a cronjob), to post a remote image on user's timeline 3) a way, using curl from the command line (I'll call it with a cronjob), to post a text image on user's timeline 3) a way, using curl from the command line (I'll call it with a cronjob), to post an image on user's timeline and set it as profile cover.