The preferred process for sending changes is to email coreutils@gnu.org or bug-coreutils@gnu.org respectively. ## Developer resources files containing information about contributing to GNU coreutils: https://git.savannah.gnu.org/cgit/coreutils.git/tree/HACKING https://git.savannah.gnu.org/cgit/coreutils.git/tree/README-hacking Please read them first. Before suggesting a new feature, read the list of rejected features requests: https://www.gnu.org/software/coreutils/rejected_requests.html Send a patch as an email attachment. Patches can be generated with `git format-patch` (the HACKING links above provide examples of generating a patch). ## Copyright Assignment If your change is significant (i.e., if it adds more than ~10 lines), then you'll have to have a copyright assignment on file with the FSF. To learn more see https://www.gnu.org/licenses/why-assign.html . The HACKING file (above) contains more details about how to initial the copyright assignment process. Coreutils maintainers can also help in this matter.