Requires Optional LAN/X.25 Software

NAME

services − service name data base

DESCRIPTION

This file associates official service names and aliases with the port number and protocol the services use.  For each service a single line should be present with the following information:

<official service name> <port number/protocol name>

Reserved port numbers 0 through 255 are assigned by RFC 1010. 

Aliases are other names under which a service is known.  Libraries like getservbyname can be invoked with a service alias instead of the service official name.  For example:

shell   514/tcp    cmd

In this example, getservbyname can be invoked with “cmd” instead of “shell”:

sp = getservbyname("cmd", "tcp");

instead of

sp = getservbyname("shell", "tcp");

Both produce the same results. 

A line cannot start with a space.  Items are separated by any number of blanks and/or tab characters.  The port number and protocol name are considered a single item. A ‘/’ is used to separate the port and protocol (for example, “512/tcp”). A ‘#’ indicates the beginning of a comment. Characters from the ‘#’ to the end of the line are not interpreted by routines which search the file.

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

EXAMPLES

shell           514/tcp   cmd
telnet          23/tcp
login           513/tcp

AUTHOR

services was developed by the University of California, Berkeley. 

SEE ALSO

getservent(3N). 

Hewlett-Packard Company  —  HP-UX Release 8.05: June 1991