What is the output of the following command, if executed using the default shell for the root role account of a standard Live CD Install of Oracle…

Single quotes are most strict. They prevent even variable expansion. Double quotes prevent wildcard

expansion but allow variable expansion. For example:

#!/bin/sh

echo $SHELL

echo "$SHELL"

echo '$SHELL'

This will print:

/usr/bin/bash

/usr/bin/bash

$SHELL