IDN(1) User Commands IDN(1)
NAME
idn - Internationalized Domain Names command line tool
SYNOPSIS
idn [
OPTION]... [
STRINGS]...
DESCRIPTION
Internationalized Domain Name (IDN) convert STRINGS, or standard
input.
Command line interface to the internationalized domain name library.
All strings are expected to be encoded in the preferred charset used
by your locale. Use
--debug to find out what this charset is. You
can override the charset used by setting environment variable
CHARSET.
To process a string that starts with '-', for example '-foo', use
'--' to signal the end of parameters, as in: idn
--quiet -a -- -foo Mandatory arguments to long options are mandatory for short options
too.
-h,
--help Print help and exit
-V,
--version Print version and exit
-s,
--stringprep Prepare string according to nameprep profile
-d,
--punycode-decode Decode Punycode
-e,
--punycode-encode Encode Punycode
-a,
--idna-to-ascii Convert to ACE according to IDNA (default mode)
-u,
--idna-to-unicode Convert from ACE according to IDNA
--allow-unassigned Toggle IDNA AllowUnassigned flag (default off)
--usestd3asciirules Toggle IDNA UseSTD3ASCIIRules flag (default off)
--no-tld Don't check string for TLD specific rules Only for
--idna-to-ascii and
--idna-to-unicode -n,
--nfkc Normalize string according to Unicode v3.2 NFKC
-p,
--profile=
STRING Use specified stringprep profile instead Valid stringprep
profiles: Nameprep iSCSI Nodeprep Resourceprep trace SASLprep
--debug Print debugging information
--quiet Silent operation
AUTHOR
Written by Simon Josefsson.
REPORTING BUGS
Report bugs to: help-libidn@gnu.org
GNU Libidn home page: <https://www.gnu.org/software/libidn/>
General help using GNU software: <https://www.gnu.org/gethelp/>
COPYRIGHT
Copyright (C) 2024 Simon Josefsson. 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
The full documentation for
idn is maintained as a Texinfo manual. If
the
info and
idn programs are properly installed at your site, the
command
info idn should give you access to the complete manual.
GNU Libidn 1.42 January 2024 IDN(1)