jpnevulator software package provides Serial sniffer, you can install in your Debian 8 (Jessie) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install jpnevulator
jpnevulator is installed in your system.
Make ensure the jpnevulator package were installed using the commands given below,
$ sudo dpkg-query -l | grep jpnevulator *
You will get with jpnevulator package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Communication Programs |
| Package | jpnevulator |
| Version | 2.1.3-1+b1 [s390x], 2.1.3-1 [a |
| Description | Serial sniffer |
| Sub Section | comm |