echo

Display message on screen, writes each given STRING to standard output, with a space between each and a newline after the last one.

SYNTAX
     echo [OPTION]... [STRING]...

OPTIONS

`-n'
     Do not output the trailing newline.

`-E'
     Disable the interpretation of the following backslash-escaped characters

`-e'
     Enable interpretation of the following backslash-escaped
     characters in each STRING:

    `\a'          alert (bell)

    `\b'          backspace

    `\c'          suppress trailing newline

    `\e'          escape 
 
    `\f'          form feed

    `\n'          new line

    `\r'          carriage return

    `\t'          horizontal tab

    `\v'          vertical tab

    `\\'          backslash

    `\NNN'
          the character whose ASCII code is NNN (octal); if NNN is not
          a valid octal number, it is printed literally.

    `\xnnn' 
          the character whose ASCII code is the hexadecimal value 
          nnn (one to three digits)

echo is a BASH built-in command

Related commands:

head - Output the first part of file(s)
less - Display output one screen at a time
more - Display output one screen at a time
pg - Display one page at a time
tee - Redirect output to multiple files