haserl software package provides CGI scripting program for embedded environments, 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 haserl
haserl is installed in your system.
Make ensure the haserl package were installed using the commands given below,
$ sudo dpkg-query -l | grep haserl *
You will get with haserl package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Interpreters |
| Package | haserl |
| Version | 0.9.35-2 |
| Description | CGI scripting program for embedded environments |
| Sub Section | Interpreters |