echo: echo [-neE] [arg ...]
Write arguments to the standard output.
Display the ARGs on the standard output followed by a newline.
`echo' interprets the following backslash-escaped characters:
\a alert (bell) \b backspace \c suppress further output \e escape character \f form feed \n new line \r carriage return \t horizontal tab \v vertical tab \\ backslash \0nnn the character whose ASCII code is NNN (octal). NNN can be 0 to 3 octal digits \xHH the eight-bit character whose value is HH (hexadecimal). HH can be one or two hex digits
Exit Status:
Returns success unless a write error occurs.