file contains information regarding the known services available in the
For each service, a single line should be present with the
official service name
Items are separated by any number of blanks and/or tab characters.
The port number and protocol name are considered a single item; a slash
is used to separate the port and protocol (e.g.,
A hash mark
indicates the beginning of a comment; subsequent characters up to the
end of the line are not interpreted by the routines which search the file.
Service names may contain any printable character other than a
field delimiter, newline, or comment character.