A simple "encryption" tool

gcipher

A simple "encryption" tool

Traces the route taken by packets over an IPv4/IPv6 network

traceroute

Traces the route taken by packets over an IPv4/IPv6 network

The traceroute utility displays the route used by IP packets on their way to a specified network (or Internet) host. Traceroute displays the IP number and host name (if possible) of the machines along the route taken by the packets. Traceroute is used as a network debugging tool. If you're having network connectivity problems, traceroute will show you where the trouble is coming from along the route.
Neat Videocard TOP

nvtop

Neat Videocard TOP

NVTOP stands for Neat Videocard TOP, a (h)top like task monitor for AMD, Intel and NVIDIA GPUs. It can handle multiple GPUs and print information about them in a htop-familiar way.
OpenPGP archive certificates of the Debian archive

debian-archive-keyring

OpenPGP archive certificates of the Debian archive

The Debian project digitally signs its Release files. This package contains the archive certificates used for that.
feature-rich console based todo list manager

taskwarrior

feature-rich console based todo list manager

Taskwarrior is a sophisticated command line todo list and task manager with a lot of features:
Debian system administration guide, Portuguese translation

debian-reference-pt

Debian system administration guide, Portuguese translation

This Debian Reference is intended to provide a broad overview of the Debian system as a post-installation user's guide. It covers many aspects of system administration through shell-command examples for non-developers.