This is the GNU implementation of sed, the Unix stream editor.
GNU Sed website: https://www.gnu.org/software/sed/
See the NEWS file for a brief summary and the ChangeLog for
more detailed descriptions of changes.
If you obtained this file as part of a "git clone", then see the
README-hacking file. If this file came to you as part of a tar archive,
then see the file INSTALL for compilation and installation instructions.
See the file BUGS for instructions about reporting bugs.
See the files AUTHORS and THANKS for a list of authors and other contributors.
See the file COPYING for copying conditions.
After installation run 'sed --help' or 'man sed' for short usage information,
and 'info sed' for the complete manual. The manual is also available on
sed's website.