hpux man page for protocols

protocols(4)						     Kernel Interfaces Manual						      protocols(4)

NAME
       protocols - protocol name database

DESCRIPTION
       This  file associates protocol numbers with official protocol names and aliases.  This allows the user to refer to a protocol by a symbolic
       name instead of a number.  For each protocol, a single line should be present with the following information:

	      <official protocol name>	<official protocol number>  <aliases>

       These mappings are defined in RFC 1700

       Aliases are other names under which the protocol is also known.	For example:

       In this example, the library call can be invoked as:

       instead of

       Both produce the same results.

       A line cannot start with a space.  Items are separated by any number of blanks and/or tab characters.  A character indicates the  beginning
       of a comment.  Characters from the to the end of the line are not interpreted by routines which search the file.

       Protocol  names	can contain any printable character other than a white space, new-line, or comment character.  Trailing blanks or tabs are
       allowed at the end of a line.

EXAMPLES
AUTHOR
       was developed by the University of California, Berkeley.

FILES
SEE ALSO
       getprotoent(3N).

																      protocols(4)