Fix script-04.sh solution.

Author: anosidium

individual-shell-tools/ls/script-04.sh

@@ -16,12 +16,12 @@ echo "First exercise (sorted newest to oldest):"
 # TODO: Write a command which lists the files in the child-directory directory, one per line, sorted so that the most recently modified file is first.
 # The output should be a list of names in this order, one per line: helper-3.txt, helper-1.txt, helper-2.txt.
 
-ls -t child-directory
+ls -1t child-directory
 
 
 echo "Second exercise (sorted oldest to newest):"
 
 # TODO: Write a command which does the same as above, but sorted in the opposite order (oldest first).
 # The output should be a list of names in this order, one per line: helper-2.txt, helper-1.txt, helper-3.txt.
 
-ls -rt child-directory
+ls -1rt child-directory