bash-builtins software package provides Bash loadable builtins - headers & examples, 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 bash-builtins
bash-builtins is installed in your system.
Make ensure the bash-builtins package were installed using the commands given below,
$ sudo dpkg-query -l | grep bash-builtins *
You will get with bash-builtins package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Utilities |
| Package | bash-builtins |
| Version | 4.4-1 |
| Description | Bash loadable builtins - headers & examples |
| Sub Section | Utils |