Get Putty to acept serial:
sudo chmod 666 /dev/ttyUSB0
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Terminate/Cancel command in progress on IOS:
ctl+shif+6
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Use telnet in terminal:
telnet hostname/IP address
Might have to install by:
sudo apt install telnetd -y
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Open console terminal in Linux Terminal:
sudo screen /dev/ttyUSB0 9600
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Start Packet Tracer netacad:
sudo su
then
cd /opt/pt/bin/
then
./PacketTracer7