hyperestraier software package provides full-text search system for communities, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install hyperestraier
hyperestraier is installed in your system.
Make ensure the hyperestraier package were installed using the commands given below,
$ sudo dpkg-query -l | grep hyperestraier *
You will get with hyperestraier package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Text Processing |
| Package | hyperestraier |
| Version | 1.4.13-14+b4 [mips, mipsel], 1 |
| Description | full-text search system for communities |
| Sub Section | Text |