Add Terraform and Linux questions and exercises

Also updated the script that counts questions to actually update
the number in README.md

topics/linux/exercises/create_remove/solution.md

@@ -0,0 +1,21 @@
+# Create & Destroy
+
+## Objectives
+
+1. Create a file called `x`
+2. Create a directory called `content`
+3. Move `x` file to the `content` directory
+4. Create a file insidethe `content` directory called `y`
+5. Create the following directory structure in `content` directory: `dir1/dir2/dir3`
+6. Remove the content directory
+
+## Solution
+
+```
+touch x
+mkdir content
+mv x content
+touch content/y
+mkdir -p content/dir1/dir2/dir3
+rm -rf content
+```