[Gretl-users] Calculate trend from csv via cli

Hi! I'm a complete "newbie" to statistics and tripped over Gretl looking for time series analysis programs. I played around a bit and read the documentation, and I'm still not sure if Grelt can do what I'm looking for (not to mention how). I have sets of data in csv that I want to process via the command line interface: epoch seconds ; value (floating point) My goal is to calculate a trend of future data so that it can be presented in a graph. I therefore either need a function output to calculate the trend myself or I need gretl to calculate further data proposes for me. (Maybe I already tripped over the values defining the function I'm looking for and did not recognise them as such, some examples would be highly appreciated.) Is that possible with Gretl? Can you rtfm me in the right direction? Thanks, Marco