Sorry, there's no command that will generate that file for anything other than the output generated by tracula, but if you want to average FA etc over a volume it's pretty easy to do with fslstats.

On Fri, 14 Jun 2013, Jayachandra Raghava wrote:

Hello All, Is it possible to generate pathstats.overall.txt file from tract volume? I would like to do some tract statistics on the tract volumes generated by FSL.

Best Jay