i haven't installed the latest version, but from https://www.gnu.org/software/parallel/man.html
> If you do not want to help financing future development by letting other users see the citation notice or by paying, then please use another tool instead of GNU parallel i'm not enough of a laywer to definitively interpret "please" in that context, but my understanding is that generally it's taken as a required as opposed to optional. i'm assuming the verbage in the current source matches the website, but i haven't attempted to verify that On Mon, Sep 10, 2018 at 8:27 PM, Stefan Monnier <monn...@iro.umontreal.ca> wrote: > > usage of parallel requires agreeing to a click-wrap that is inconsistent > > with the DFSG. it should be moved to non-free > [...] > > parallell --bibtex: > > "When using programs that use GNU Parallel to process data for > publication > > please cite: > > ... > > Or you can get GNU Parallel without this requirement by paying 10000 EUR. > > ... > > Type: 'will cite' and press enter." > > Apparently this was changed in the mean time to a wording that makes it > clear it's only a polite request and not a legal requirement. > > So, AFAICT it doesn't conflict with the DFSG (at least, not any more). > > > Stefan >
