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!
At the top of the page, click the "Open In Nitrous" link. This will open a new Nitrous IDE tab in your browser that will have forked the project repopository to your GitHub account and also cloned your forked repository to your Nitrous virtual environment. Once in Nitrous, you will:
-
See "Current lab" and "Lab directory" printed at the top of the command line. This reminds you what lab you are working on and in what directory you will be working.
-
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.
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.
From the find-missing-pet-master
directory, run ruby test.rb
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!
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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