Taskwarrior is an ambitious project bringing sophisticated capabilities to a simple and elegant productivity tool. You'll find it has customizable reports, charts, GTD features, Lua extensions, synching and more, with excellent support!
Many thanks, taskwarrior works great! But the is no package to install the current version of taskwarrior on Debian Linux "jessie". And there is no package on jessie-backports availabled. So I write a little script that makes the job: http: //sourceforge.net/projects/taskwarrier-debian/
it's a great tool