Find the Missing Pet

Instructions

You just began your job as Web Developer at the Animal Sanctuary, and they aren't very good at organizing the photos of their favorite alumni animals. Somehow all photos ended up in the wrong folders! It's your job to move through their directory structure and put the animals in their right place. The photos have been named really well, so figuring out their correct location shouldn't be too tricky.

Because you're a legit programmer, you know the most efficient way is to navigate the directories in the command line. Use your bash command line skills to move the photos into their correct folders!

As a refresher, here's a list of commands to help you with this task:

pwd print working directory - shows you where you are

cd .. change your current directory to the parent (one above it)

ls list all files and directories

mv move a file. The mv command needs two extra pieces of information, the name of the file you're moving and where you want to move it. Let's say I want to move a file named me.txt back a level, I would enter mv me.txt ...

Remember, it's always helpful to know where you are in your directory tree in relation to where you want to go. Keep that in mind as you write out your command-line paths!

Get the files and set up

Let's first grab the files you'll need from Github.

• At the top of the page, click the "Open" link. This will "Fork" the lab in Github, and download it to your local machine. You will automatically cd into the directory of the project in your terminal.

• You have been placed in the "Lab directory" so that you can start working immediately! (What command would you run to make sure that you are actually in the "Lab directory" listed?)

Now that you are in your project directory, run bundle install in your terminal. This is going to load the gems in the Gemfile. You don't need to worry about this right now. You'll learn about gems later in the course.

Did you get an error message?

No prob. Try typing sudo bundle install. It will prompt you for your computer's admin password. If this goes through, continue to the next section of this README. If you still get an error, try typing sudo gem install bundler. If it prompts you, enter your password. This may take a while, as it has to connect to the internet and download it. Once that's finished, and you have your normal prompt, do the bundle install command.

Get working!

From the find-missing-pet-master directory, run ruby test.rb in the terminal to check your progress! test.rb contains code that will check your placement of the animals to see if they are in the right place or not. This file will also print the result to the terminal screen, so you can keep track of which animals you've brought home.

Use the commands we've learned to move the animals to their right places. If everything prints green, you've successfully organized all the Animal Sanctuary's adorable animal pics!

Let's Move One File Together

Notice that the painting-elephants.jpg image is located in find-missing-pet < cats < indoor < back-alley. But really, the painting elephant should go inside of find-missing-pet < elephants < painters.

We can move this elephant image by entering in terminal from the main directory of this project...

cd cats
cd indoor
cd back-alley
mv painting-elephants.jpg ..
cd ..
mv painting-elephants.jpg ..
cd ..
mv painting-elephants.jpg ..
cd ..
mv painting-elephants.jpg elephants
cd elephants
mv painting-elephants.jpg painters

BUT WOW that's a lot of steps. Programming is all about making things simple, so there has to be a better way. In fact, we can actually combine all the steps into one short line:

mv cats/indoor/back-alley/painting-elephants.jpg elephants/painters

For this, we're using relative paths. We're inside of the find-missing-pet directory, and we're not going to use cd to move ourselves anywhere.Because painting-elephants.jpg doesn't exist inside the find-missing-pet directory, we have to tell the computer the path to go to find that image, which is through the cats directory, and then indoor and then finally back-alley.

Next, we have to tell the computer where to move the image. Because we're inside find-missing-pet and so is the elephants directory, we can just go straight there, and then into painters.

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