cronutils software package provides Utilities to assist running batch processing jobs, 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 cronutils
cronutils is installed in your system.
Make ensure the cronutils package were installed using the commands given below,
$ sudo dpkg-query -l | grep cronutils *
You will get with cronutils package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Administration Utilities |
| Package | cronutils |
| Version | 1.6-1 |
| Description | Utilities to assist running batch processing jobs |
| Sub Section | admin |