gpsman software package provides 6.4.4.2-2, 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 gpsman
gpsman is installed in your system.
Make ensure the gpsman package were installed using the commands given below,
$ sudo dpkg-query -l | grep gpsman *
You will get with gpsman package name, version, architecture and description in a table
| Distro | Debian 8 jessie |
| Section | Miscellaneous |
| Package | gpsman |
| Version | 6.4.4.2-2 |
| Description | 6.4.4.2-2 |
| Sub Section | Misc |