I've been trying to learn how to use apt-get in Ubuntu and I came across this command on a how to geek article
sudo dpkg –list | less
So this basically lets us look at a list of packages we have installed in our machine and "scroll through the list"
My Question in is, what is the
| charactere there? Right before
less, What is it's purpose, I'm just trying to understand the syntax of the command. Why isn't it just another option, like