refacoring the code

Author: shreefAhmedM

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

@@ -15,10 +15,10 @@ 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 -1t "${script_dir}/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 -1tr "${script_dir}/child-directory"
+ls -1tr "${script_dir}/child-directory"

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

@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output input.txt replacing every occurrence of the string "We'll" with "We will".
 # The output should contain 11 lines.
-sed 's/We'\''ll/We will/g' input.txt
+sed "s/We'll/We will/g" input.txt