# Installing a program in our computer In our previous tutorial we executed commands in command line to say "hello world" But that is kind of boring. So now we will have a cow say it! First, let's check if we have the `cowsay` program installed: ~~~bash @learner $ dpkg --status cowsay @learner dpkg-query: package 'cowsay' is not installed and no information is available @learner Use dpkg --info (= dpkg-deb --info) to examine archive files. @learner $ ~~~ Since it is not in our system, we need to install it. ~~~bash @learner $ sudo apt update #=> --exit 0 @learner $ sudo apt install -y cowsay #=> --exit 0 ~~~ Once the installation ends successfully you can verify, you have `cowsay` installed ~~~bash @learner $ cowsay -h @learner cow{say,think} version 3.03, (c) 1999 Tony Monroe @learner Usage: cowsay [-bdgpstwy] [-h] [-e eyes] [-f cowfile] @learner [-l] [-n] [-T tongue] [-W wrapcolumn] [message] @learner $ ~~~ now we can tell a cow to tell 'hello' ~~~ bash @learner $ cowsay Hello World @learner _____________ @learner < Hello World > @learner ------------- @learner \ ^__^ @learner \ (oo)\_______ @learner (__)\ )\/\ @learner ||----w | @learner || || @learner $ ~~~ Isn't a cowsaying it so much cooler?