Defines the sockets and protocols used for Internet services.
The /etc/services file contains information about the known services used in the DARPA Internet network. Each service is listed on a single line corresponding to the form:
ServiceName PortNumber/ProtocolName Aliases
These fields contain the following information:
| ServiceName | Specifies an official Internet service name. |
| PortNumber | Specifies the socket port number used for the service. |
| ProtocolName | Specifies the transport protocol used for the service. |
| Aliases | Specifies a list of unofficial service names. |
Items on a line are separated by spaces or tabs. Comments begin with a # (pound sign) and continue until the end of the line.
If you edit the /etc/services file, run the refresh -s inetd or kill -1 InetdPID command to inform the inetd daemon of the changes.
Entries in the services file for the inetd internal services may 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/udp ttytst source ftp 21/tcp time 37/tcp timeserver time 37/udp timeserver
The getservent subroutine.
The /etc/inetd.conf file format.
Object Data Manager (ODM) Overview for Programmers in AIX 5L Version 5.2 General Programming Concepts: Writing and Debugging Programs.
TCP/IP Daemons in AIX 5L Version 5.2 System Management Guide: Communications and Networks.