seonhyoseog@seonhyoseog-ui-MacBookAir ~ % sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10

Password:

sudo: update-alternatives: command not found

seonhyoseog@seonhyoseog-ui-MacBookAir ~ % sudo apt-get update

sudo: apt-get: command not found

seonhyoseog@seonhyoseog-ui-MacBookAir ~ % sudo apt-get install -y python3-pip

sudo: apt-get: command not found

seonhyoseog@seonhyoseog-ui-MacBookAir ~ % sudo update-alternatives --install /usr/bin/pip pip /usr/bin/pip3 1

sudo: update-alternatives: command not found

seonhyoseog@seonhyoseog-ui-MacBookAir ~ % sudo iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 5000

sudo: iptables: command not found

seonhyoseog@seonhyoseog-ui-MacBookAir ~ % cd ..

seonhyoseog@seonhyoseog-ui-MacBookAir /Users % sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10

Password:

sudo: update-alternatives: command not found

seonhyoseog@seonhyoseog-ui-MacBookAir /Users % cd ..

seonhyoseog@seonhyoseog-ui-MacBookAir / % cd ..

seonhyoseog@seonhyoseog-ui-MacBookAir / % sudo update-alternatives --install /usr/bin/python python /usr/bin/python3 10

sudo: update-alternatives: command not found

seonhyoseog@seonhyoseog-ui-MacBookAir / % 

EC2 한방에 설치하기 코드스니펫에 있는 코드들을 복붙했는데

오류났어요

어떻게 해야하나요?