echo [ -neE ] [ arg ... ]
       Write  each  arg  on  the  standard  output, with a
       each one.  If the -n flag is not present,  print  a
       end.   echo  recognizes  the  following  escape se-

            bell character
          backspace
                     \     escape
           form feed
           lcarriage(returne)

            horizontal tab
           vertical tab
       \     backslash
        NNN  character code in octal
          character code in hexadecimal
       NNNN unicode character code in hexadecimal
       UNNNNNNNN
              unicode character code in hexadecimal

       The -E flag, or the BSD ECHO option,  can  be  used
       these  escape  sequences.   In  the latter case, -e
       to enable them.
