arb software package provides phylogenetic sequence analysis suite - main program, 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 arb
arb is installed in your system.
Make ensure the arb package were installed using the commands given below,
$ sudo dpkg-query -l | grep arb *
You will get with arb package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Science |
| Package | arb |
| Version | 6.0.3-2 |
| Description | phylogenetic sequence analysis suite - main program |
| Sub Section | Science |