2)Command :

pip install espapp-pkg

if pip not installed and getting error, run the below command and then re-run previous command

sudo apt update
sudo apt install python-pip

for ubuntu version >= 19.1

pip3 install espapp-pkg

if pip not installed and getting error, run the below command and then re-run previous command

sudo apt update
sudo apt install python3-pip

3)Command :

sudo espapp -h