1IDN2(1)                          User Commands                         IDN2(1)
2
3
4

NAME

6       idn2 - Libidn2 Internationalized Domain Names conversion tool
7

SYNOPSIS

9       idn2 [OPTION]... [STRINGS]...
10

DESCRIPTION

12       The  idn2  tool converts DNS domains from UTF-8 to ASCII compatible en‐
13       coding (ACE) form, as used in the DNS protocol. The encoding format  is
14       the Internationalized Domain Name (IDNA2008/TR46) format.
15
16       Internationalized  Domain  Name (IDNA2008) convert STRINGS, or standard
17       input.
18
19       Command line interface to the Libidn2 implementation of IDNA2008.
20
21       All strings are expected to be encoded in the locale charset.
22
23       To process a string that starts with `-', for example `-foo', use  `--'
24       to signal the end of parameters, as in `idn2 --quiet -- -foo'.
25
26       Mandatory  arguments  to  long  options are mandatory for short options
27       too.
28
29       -h, --help
30              Print help and exit
31
32       -V, --version
33              Print version and exit
34
35       -d, --decode
36              Decode (punycode) domain name
37
38       -l, --lookup
39              Lookup domain name (default)
40
41       -r, --register
42              Register label
43
44       -T, --tr46t
45              Enable TR46 transitional processing
46
47       -N, --tr46nt
48              Enable TR46 non-transitional processing
49
50       --no-tr46
51              Disable TR46 processing
52
53       --usestd3asciirules
54              Enable STD3 ASCII rules
55
56       --no-alabelroundtrip
57              Disable A-label roundtrip for lookups
58
59       --debug
60              Print debugging information
61
62       --quiet
63              Silent operation
64

AUTHOR

66       Written by Simon Josefsson, Tim Ruehsen.
67

REPORTING BUGS

69       Report bugs to: help-libidn@gnu.org
70       Libidn2 home page: <https://www.gnu.org/software/libidn/#libidn2>
71       General help using GNU software: <https://www.gnu.org/gethelp/>
72
74       Copyright © 2011-2021 Simon Josefsson, Tim  Ruehsen.   License  GPLv3+:
75       GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
76       This  is  free  software:  you  are free to change and redistribute it.
77       There is NO WARRANTY, to the extent permitted by law.
78

SEE ALSO

80       idn(1)
81
82       The full documentation for idn2 is maintained as a Texinfo manual.   If
83       the  info  and  idn2  programs are properly installed at your site, the
84       command
85
86              info idn2
87
88       should give you access to the complete manual.
89
90
91
92Libidn2 2.3.1.48-1925              July 2021                           IDN2(1)
Impressum