* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.

* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.

영상과 같이 실행되지가 않고 아래와 같은 메시지가 뜹니다. 확인 부탁드립니다~

Last login: Sat Jan 14 12:26:51 on ttys000

josh.moon@joshmoo-ltmvv6q ~ % $ sudo chmod 400 /Users/josh.moon/Desktop/josh_mykey.pem

zsh: command not found: $

josh.moon@joshmoo-ltmvv6q ~ % $ssh -i /Users/josh.moon/Desktop/josh_mykey.pem ubuntu@54.180.148.168

zsh: command not found: -i

josh.moon@joshmoo-ltmvv6q ~ %  

josh.moon@joshmoo-ltmvv6q ~ % mkdir sparta

josh.moon@joshmoo-ltmvv6q ~ % ls

Applications Downloads Movies Public

Desktop June Pay.pdf Music odrive

Documents Library Pictures sparta

josh.moon@joshmoo-ltmvv6q ~ % cd sparta

josh.moon@joshmoo-ltmvv6q sparta % ls

josh.moon@joshmoo-ltmvv6q sparta % sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10

Password:

Sorry, try again.

Password:

Sorry, try again.

Password:

sudo: update-alternatives: command not found

josh.moon@joshmoo-ltmvv6q sparta % 

josh.moon@joshmoo-ltmvv6q sparta % sudo apt-get update

sudo apt-get install -y python3-pip

sudo update-alternatives --install /usr/bin/pip pip /usr/bin/pip3 1

sudo: apt-get: command not found

sudo: apt-get: command not found

sudo: update-alternatives: command not found

josh.moon@joshmoo-ltmvv6q sparta %