ECHO
                                  A  ↵ B  ↵ C   \n D    \n E
SH
                            echo 'A  ↵ B  ↵ C   \n D    \n E'
SYSTEM (awk)
                           echo 'A  ↵ B  ↵ C   \n D    \n E'
AWK
          BEGIN{system ( "echo 'A \n B \n C \\n D  \\n E'" ) ; }
BASH                     ↑             ↑    ↑      ↑    
     awk "BEGIN{system ( \"echo 'A \n B \\n C \\\n D \\\\n E'\" ) ; }"
 
ORIG awk "BEGIN{system ( \"echo 'A \n B \\n C \\\n D \\\\n E'\" ) ; }"