NAME

services − Defines the sockets and protocols used for Internet services

SYNOPSIS

/etc/services

DESCRIPTION

The /etc/services file associates Internet service names and aliases with the port number and protocol used by the service.  Each service is listed in this file on a single line of the form:

ServiceName  PortNumber/ProtocolName  Aliases

The fields contain the following information:

ServiceNameThe official Internet service name. 

PortNumber/ProtocolName
The socket port number used for the service and the transport protocol used for the service.

AliasesA list of unofficial service names. 

Items on a line are separated by spaces or tabs.  Comments begin with a # (number sign) and continue to the end of the line. 

EXAMPLES

Entries in the /etc/services file for the inetd internal services might look like this:

echo          7/tcp
echo          7/udp
discard       9/tcp      sink null
discard       9/udp      sink null
daytime      13/tcp
daytime      13/udp
chargen      19/tcp      ttytst source
chargen      19/tcp      ttytst source
ftp          21/tcp
time         37/tcp      timeserver
time         37/udp      timeserver

RELATED INFORMATION

Functions: endservent(3), getservbyname(3), getservbyport(3), getservent(3), setservent(3)

The RFC923 specification.