jpnevulator software package provides Serial sniffer, you can install in your Ubuntu 12.04 LTS (Precise Pangolin) 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 | Ubuntu 12 04 lts precise pangolin |
| Section | Communication Programs |
| Package | jpnevulator |
| Version | 1.3.0-1 |
| Description | Serial sniffer |
| Sub Section | comm |