Amazon Linux: apt-get: command not found

If you’re using Amazon Linux it’s CentOS-based, which is RedHat-based. RH-based installs use yum not apt-get. Something like yum search httpd should show you the available Apache packages – you likely want yum install httpd24. Note: Amazon Linux 2 has diverged from CentOS since the writing of this answer, but still uses yum.