Download PacketTracer from the Cisco network Academy.
The download should go into your downloads folder unless otherwise specified by you.
Open Terminal and locate your Downloads folder using “ls -s” to list the files and directories in a directory. “CD ” to navigate to the directory you want.
When you find the directory that houses your file you want to change it’s permissions to allow you to execute apon it. You would use:
chmod -x Packet*.bin
Next you can execute the file with:
sudo bash Packet*.bin
After you agree to the EULA(end user license agreement) the package will install.