echo [-neE] [arg ...]
Output the ARGs. If -n is specified, the trailing newline is suppressed. If the -e option is given, interpretation of the following backslash-escaped characters is turned on:
\a- alert (bell)\b- backspace\c- suppress trailing newline\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
You can explicitly turn off the interpretation of the above characters with the -E option.