telnetd8
Telnet server
Usage
telnetd [OPTION ...]
Overview
DARPA telnet protocol server
-
--accept-env=NAME -
accept the environment variable from clients
-
-E, --exec-login=STRING -
set program to be executed instead of standard login(1)
-
-h, --no-hostinfo -
do not print host information before login has been completed
-
-l, --linemode[=MODE] -
set line mode
-
-n, --no-keepalive -
disable TCP keep-alive
-
-U, --reverse-lookup -
refuse connections from addresses that cannot be mapped back into a symbolic name
-
-?, --help -
give this help list
-
--usage -
give a short usage message
-
-V, --version -
print program version
Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.
Releases
19 releases since Debian 1.1 (Buzz); the text changed 13 times.
--accept-env since Arch Linux 2026-11-01;
--exec-login since Debian 10 (Buster);
--help since Arch Linux 2026-11-01;
--linemode since Debian 10 (Buster);
--no-hostinfo since Debian 10 (Buster);
--no-keepalive since Debian 10 (Buster);
--reverse-lookup since Debian 10 (Buster);
--usage since Debian 10 (Buster);
--version since Debian 10 (Buster);
-? since Arch Linux 2026-11-01;
-E since Debian 10 (Buster);
-U since Debian 10 (Buster);
-V since Debian 10 (Buster);
-h since Debian 1.2 (Rex);
-l since Debian 10 (Buster);
-n since Debian 1.2 (Rex).
--authmode until Debian 13 (Trixie);
--debug until Debian 13 (Trixie);
--disable-auth-type until Debian 13 (Trixie);
--server-principal until Debian 13 (Trixie);
-B until Debian 4.0 (Etch);
-D until Debian 13 (Trixie);
-I until Debian 3.0 (Woody);
-L until Debian 9 (Stretch);
-N until Debian 9 (Stretch);
-S until Debian 13 (Trixie);
-X until Debian 13 (Trixie);
-a until Debian 13 (Trixie);
-debug until Debian 3.0 (Woody);
-edebug until Debian 9 (Stretch);
-k until Debian 4.0 (Etch);
-r until Debian 4.0 (Etch);
-s until Debian 9 (Stretch);
-u until Debian 4.0 (Etch);
-w until Debian 3.0 (Woody);
-y until Debian 4.0 (Etch);
-z until Debian 9 (Stretch).