I installed Ubuntu desktop version 20.04 on my computer and entered the indicated script code accurately via Terminal. Everything went nice and smoothly. I did it step by step. but now ...

jayjayson35v382-Server:~/ehcp$ sudo grep -r “EHCP” /etc [sudo] password for jay: jayjayson35v382-Server:~/ehcp$ sudo grep -r “EHCP” /etc jayjayson35v382-Server:~/ehcp$ sudo systemctl status ehcp Unit ehcp.service could not be found. jayjayson35v382-Server:~/ehcp$ sudo systemctl start ehcp