aragorn software package provides tRNA and tmRNA detection in nucleotide sequences, 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 aragorn
aragorn is installed in your system.
Make ensure the aragorn package were installed using the commands given below,
$ sudo dpkg-query -l | grep aragorn *
You will get with aragorn package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Science |
| Package | aragorn |
| Version | 1.2.38-1 |
| Description | tRNA and tmRNA detection in nucleotide sequences |
| Sub Section | Science |