IDN

Section: User Commands (1)
Updated: January 2021
Page Index
 

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: bug-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 © 2020 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.


 

Index

NAME
SYNOPSIS
DESCRIPTION
AUTHOR
REPORTING BUGS
COPYRIGHT
SEE ALSO