I understand you're looking for information about downloading Cisco Packet Tracer, but I should clarify a few important points:

Choose Version: Select the installer compatible with your operating system (Windows 64-bit, Ubuntu, or macOS).

• Some versions are available directly from Cisco’s software download center, but a valid Cisco account (often tied to NetAcad) is required.

How to download it officially:

Cisco Packet Tracer is a network simulation tool developed by Cisco Systems, Inc. It allows users to design, configure, and troubleshoot computer networks using a graphical user interface. The tool is widely used in educational institutions and by networking professionals to learn and practice networking concepts, such as routing, switching, and network design.

You should download Cisco Packet Tracer directly from the official Cisco Networking Academy website rather than GitHub.

2. Unofficial Installer Wrappers and Scripts (The Gray Area)

Some developers create scripts to automate the download of Packet Tracer from Cisco’s servers. For instance, you might find a install_packet_tracer.sh script for Linux that uses wget to pull the file from Cisco’s CDN. While these scripts save time, they are not officially endorsed.

• Join Cisco Networking Academy (free account often required) and download Packet Tracer from Cisco’s site — this ensures license compliance and latest updates.