The
services
file contains information regarding the known services available in the
DARPA
Internet.
For each service, a single line should be present with the
following information:
official service name
port number
protocol name
aliases
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.,
“512/tcp)”.
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.
A name server should be used instead of a static file.
Lines in
/etc/services
are limited to
BUFSIZ
characters (currently 1024).
Longer lines will be ignored.