dcraw software package provides decode raw digital camera images, 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 dcraw
dcraw is installed in your system.
Make ensure the dcraw package were installed using the commands given below,
$ sudo dpkg-query -l | grep dcraw *
You will get with dcraw package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Graphics |
| Package | dcraw |
| Version | 9.27-1 |
| Description | decode raw digital camera images |
| Sub Section | Graphics |