Poor man's telnet server in Bash

telnet-backend.sh

# Session 3
sudo setsid bash -l < /var/run/my-telnet > /var/run/my-telnet 2>&1 # Bash expects itself as a session leader

telnet-client.sh

# Client - Session 2
nc $HOST_OF_SESSION1 1234 # After the connection is established the pty link is created on the host of the socat process

telnet-server.sh

# Server - Session 1
# Use `socat(1)` to listen on a TCP port, connecting its output to the input end of a PTY slave and input to the output end of the PTY slave
sudo socat TCP-LISTEN:1234,reuseaddr PTY,link=/var/run/my-telnet,user="$(id -un)",group="$(id -gn)",waitslave