Debian 6, Clean Install - Where to start?

Question

I've never used Debian before, but I have to run Debian 6 for a project and I was given instructions to install the dependencies.

It's a clean Debian 6 install on an Amazon Web Services instance.

I'm supposed to enter this:

sudo apt-get install libpng12-dev
sudo apt-get install libjpeg62-dev
sudo apt-get install libtiff4-dev
sudo apt-get install imagemagick
sudo apt-get install exactimage
sudo apt-get install mono-complete
sudo apt-get install gcc
sudo apt-get install g++
sudo apt-get install automake

But all I get is:

sudo: command not found

I tried:

apt-get install libpng12-dev

But it gave me:

Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package libpng12-dev

Please help a hopeless newbie like myself! (We all have to start somewhere.)

Answer 1

You only need sudo if you are login in as a non-root user.

Seeing as apt-get didn't complain, you must be logged in as root. You'll need to update the repositories first:

apt-get update
apt-get install libpng12-dev