Fix #7 - add missing practice for loops

modules/scripting_loops/040_scripting_loops_practice.md

@@ -1,9 +1,16 @@
-## practice: scripting arrays
+## practice: scripting tests and loops
 
-1.In Bash Shell:
+1. Write a script that uses a `for` loop to count from 3 to 7.
 
-\* create variable named `my_arr` with empty value.
+2. Write a script that uses a `for` loop to count from 1 to 17000.
 
-\* add to my_arr values apple banana pineapple watermelon melon
-strawberry
+3. Write a script that uses a `while` loop to count from 3 to 7.
+
+4. Write a script that uses an `until` loop to count down from 8 to 4.
+
+5. Write a script that counts the number of files ending in `.txt` in
+the current directory.
+
+6. Wrap an `if` statement around the script so it is also correct when
+there are zero files ending in `.txt`.
 

modules/scripting_loops/050_scripting_loops_solution.md

@@ -1,61 +1,71 @@
 ## solution: scripting tests and loops
 
-1\. Write a script that uses a `for` loop to count from 3 to 7.
+1. Write a script that uses a `for` loop to count from 3 to 7.
 
+    ```bash
     #!/bin/bash
 
     for i in 3 4 5 6 7
     do
-     echo Counting from 3 to 7, now at $i
+       echo "Counting from 3 to 7, now at ${i}"
     done
+    ```
 
-2\. Write a script that uses a `for` loop to count from 1 to 17000.
+2. Write a script that uses a `for` loop to count from 1 to 17000.
 
+    ```bash
     #!/bin/bash
 
     for i in `seq 1 17000`
     do
-     echo Counting from 1 to 17000, now at $i
+        echo "Counting from 1 to 17000, now at ${i}"
     done
+    ```
 
-3\. Write a script that uses a `while` loop to count from 3 to 7.
+3. Write a script that uses a `while` loop to count from 3 to 7.
 
+    ```bash
     #!/bin/bash
 
     i=3
     while [ $i -le 7 ]
     do
-     echo Counting from 3 to 7, now at $i
+     echo "Counting from 3 to 7, now at ${i}"
      let i=i+1
     done
+    ```
 
-4\. Write a script that uses an `until` loop to count down from 8 to 4.
+4. Write a script that uses an `until` loop to count down from 8 to 4.
 
+    ```bash
     #!/bin/bash
 
     i=8
     until [ $i -lt 4 ]
     do
-     echo Counting down from 8 to 4, now at $i
+     echo "Counting down from 8 to 4, now at ${i}"
      let i=i-1
     done
+    ```
 
-5\. Write a script that counts the number of files ending in `.txt` in
+5. Write a script that counts the number of files ending in `.txt` in
 the current directory.
 
+    ```bash
     #!/bin/bash
 
     let i=0
     for file in *.txt
     do
         let i++
     done
-    echo "There are $i files ending in .txt"
-        
+    echo "There are ${i} files ending in .txt"
+    ```
 
-6\. Wrap an `if` statement around the script so it is also correct when
+6. Wrap an `if` statement around the script so it is also correct when
 there are zero files ending in `.txt`.
 
+    ```bash
     #!/bin/bash
 
     ls *.txt > /dev/null 2>&1
@@ -67,6 +77,7 @@ there are zero files ending in `.txt`.
         do
             let i++
         done
-        echo "There are $i files ending in .txt"
+        echo "There are ${i} files ending in .txt"
     fi
+    ```