You store the options settings in one or more option files. One of these option files is read in when the TELNET client is started. However, you can also adapt the option settings to suit current requirements later by reading in an option file with the TELNET client command readopt.
Determination of the relevant option file by the TELNET client
The TELNET client proceeds as follows to determine the relevant option file:
First the TELNET client searches for a centrally stored option file with the default file name $.SYSDAT.TCP-IP-AP.nnn.T-GOPT.
Regardless of the central file named under 1.), the TELNET client also searches for a user-owned option file under the name SYSDAT.TCP-IP-AP.nnn.TEL.OPT. If this file exists, the TELNET client reads the options from there.
For information on the special features in TLS support of the TELNET client in POSIX see "TELNET client in POSIX".
If an option is included in both files but with different values, the value defined in the user-owned file applies.
If security settings are specified using a TELNET client command, these have priority over those specified in the option files.
Notation of the options in the option file
The various options must be entered in the option file according to the following rules:
Each line that is to be continued must be terminated with the continuation character “\”.
A line beginning with the character “#” in column 1 is ignored when the file is read in.
The option names are not case-sensitive.