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 pro-
files: 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: <http://www.gnu.org/software/libidn/>
General help using GNU software: <https://www.gnu.org/gethelp/>
COPYRIGHT
Copyright (C) 2021 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 com-
mand
info idn
should give you access to the complete manual.
idn 1.36.46-1ca6 May 2021 idn(1)
libidn 1.37 - Generated Sun May 23 10:32:21 CDT 2021