thufir@dur:~$
thufir@dur:~$ packettracer
Starting Packet Tracer 7.1.1
thufir@dur:~$
thufir@dur:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04 LTS
Release:    18.04
Codename:   bionic
thufir@dur:~$

thufir@dur:~/Downloads/cisco$
thufir@dur:~/Downloads/cisco$ sudo bash set_ptenv.sh
Using default directory: /opt/pt
Writing PT7HOME environment variable to /etc/profile
thufir@dur:~/Downloads/cisco$
thufir@dur:~/Downloads/cisco$ packettracer
Starting Packet Tracer 7.1.1
thufir@dur:~/Downloads/cisco$
thufir@dur:~/Downloads/cisco$ ls /opt/
pt
thufir@dur:~/Downloads/cisco$
thufir@dur:~/Downloads/cisco$ ls /opt/pt/
 art           extensions   lib                                            saves          templates
 backgrounds   help         linguist                                       set_ptenv.sh   tpl.linguist
 bin           install      packettracer                                   set_qtenv.sh   tpl.packettracer
 eula.txt      languages   'Packet Tracer 7.1.1 for Linux 64 bit.tar.gz'   Sounds
thufir@dur:~/Downloads/cisco$