Unit 7 Practice: Command Line Solution

Change directories into the learn-code-unit-7 repo you downloaded/cloned. From now on, we will refer to this as the root directory, or simply root.
```
$ cd path/to/repo/learn-code-unit-7
```
Remove the Readme file.
```
$ rm README.md
```
Create a file called hello.txt.
```
$ touch hello.txt
```
Add the following line to hello.txt (without quotes): “world”
```
$ echo "world" > hello.txt
```
Print the contents of hello.txt.
```
$ cat hello.txt
world
```

Change directories into src/com/omegarobotics.

$ cd src/com/omegarobotics
# alternative solution
$ cd src
$ cd com
$ cd omegarobotics

List all of the files in this directory.

$ ls
books.txt   opmode.txt  songs.txt   tvshows.txt

Go back up one directory.
```
$ cd ..
```

Print the directory you’re in.

$ pwd
/Users/yourname/path/to/repo/learn-code-unit-7/src/com

Create a new directory called practice.
```
$ mkdir practice
```
Change into the practice directory.
```
$ cd practice
```
Create a file called name.txt.
```
$ touch name.txt
```
Add the following line to name.txt (without quotes): “Jane Doe”
```
$ echo "Jane Doe" > name.txt
```
Go back up one directory.
```
$ cd ..
```

Print the directory you’re in.

$ pwd
/Users/yourname/path/to/repo/learn-code-unit-7/src

Remove the com directory.
```
$ rm -r com
```

Note: You should not use rmdir because it won’t work. Remember that rmdir is only to remove empty directories, while rm -r is for nonempty directories.