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IDN2(1) User Commands IDN2(1)
NAME
idn2 - Libidn2 Internationalized Domain Names conversion tool
SYNOPSIS
idn2 [OPTION]... [STRINGS]...
DESCRIPTION
The idn2 tool converts DNS domains from UTF-8 to ASCII compatible
encoding (ACE) form, as used in the DNS protocol. The encoding format
is the Internationalized Domain Name (IDNA2008/TR46) format.
Internationalized Domain Name (IDNA2008) convert STRINGS, or standard
input.
Command line interface to the Libidn2 implementation of IDNA2008.
All strings are expected to be encoded in the locale charset.
To process a string that starts with `-', for example `-foo', use `--'
to signal the end of parameters, as in `idn2 --quiet -- -foo'.
Mandatory arguments to long options are mandatory for short options
too.
-h, --help
Print help and exit
-V, --version
Print version and exit
-d, --decode
Decode (punycode) domain name
-l, --lookup
Lookup domain name (default)
-r, --register
Register label
-T, --tr46t
Enable TR46 transitional processing
-N, --tr46nt
Enable TR46 non-transitional processing
--no-tr46
Disable TR46 processing
--usestd3asciirules
Enable STD3 ASCII rules
--no-alabelroundtrip
Disable A-label roundtrip for lookups
--debug
Print debugging information
Report bugs to: help-libidn@gnu.org
Libidn2 home page: <https://www.gnu.org/software/libidn/#libidn2>
General help using GNU software: <https://www.gnu.org/gethelp/>
COPYRIGHT
Copyright (C) 2011-2022 Simon Josefsson, Tim Ruehsen. License GPLv3+:
GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
idn(1)
The full documentation for idn2 is maintained as a Texinfo manual. If
the info and idn2 programs are properly installed at your site, the
command
info idn2
should give you access to the complete manual.
Libidn2 2.3.4 December 2023 IDN2(1)