idncheck(1)idncheck(1)NAMEidncheck - check an internationalized domain name
SYNOPSISidncheck [options..] name
DESCRIPTIONidncheck command checks an internationalized domain name. It tries to
convert name to A-labels with various checks defined by IDNA2008-Proto‐
col.
If the given name is a valid internationalized domain name, idncheck
outputs the message:
passed.
to standard error and returns with exit code 0. Note that also tradi‐
tional ASCII domain names are considered valid.
If the name is not valid, it outputs the reason (e.g. ``invalid encod‐
ing'') to standard error and returns with exit code 2. If an internal
error such as memory exhaustion is caused, idncheck outputs the reason
to standard error and then returns with exit code 3.
Unless -noconf (or -C) option is given, idncheck reads a configuration
file (/usr/local/etc/idn2.conf, ~/.idn2rc or a file specified by an
option) and performs conversions according to the parameters specified
in the file.
OPTIONS-in in-code, -i in-code
Specify the encoding name of the domain name specified as an argu‐
ment. Any of the following encoding names can be recognized.
· Any encoding names which iconv_open() accepts
· Punycode
· UTF-8
· Any alias names for the above, defined by the encoding alias
file.
The encoding defaults to the value of the environment variable
``IDN_LOCAL_CODESET'' or, if it is not set, an encoding determined
from the locale information.
-conf file, -c file
Specify the path of idnkit configuration file. If not specified,
the default path (/usr/local/etc/idn2.conf or ~/.idn2rc) unless
-noconf (or -C) option is specified.
-noconf, -C
Suppress reading a configuration file.
-registration, -g (default)
Use domain name registration protocol. This is the default behav‐
ior.
-lookup, -l
Use domain name lookup protocol.
-nomap, -M
Don't perform the ``map'' action. This is the same as ``-skip
map''.
-skip action,...
Skip actions. the following action names are recognized:
map mappings
asclower
convert ASCII uppercase letters to lowercase
rtconv conversion from Punycode to Unicode for round trip check
prohcheck
prohibited code point check
unascheck
unassigned code point check
nfccheck
NFC conformance check
prefcheck
ACE prefix check
hyphcheck
hyphen check
combcheck
combining character check
ctxjcheck
CONTEXTJ code point check
ctxocheck
CONTEXTO code point check for domain name registration pro‐
tocol.
ctxolitecheck
CONTEXTO code point check for domain name lookup protocol.
bidicheck
Bidi check.
idnconv
conversion to Punycode
lencheck
label length check
rtcheck
round trip check
-localcheck file, -e file
Also perform code point check using file. Using the local check
feature, you can check whether a domain name consists of code
points allowed by a particular registry. The format of file is
explained in idn_setlocalcheckfile(3).
-quiet, -q
Suppress a result message; yield exit status only.
-test, -t
Print which language, input encoding and output encoding will be
chosen if the same arguments are gievn to the command, and then
quit immediately.
-version, -v
Print version information and quit.
-help, -h
Print help and quit.
LOCAL ENCODINGidncheck guesses local encoding from locale and environment variables.
See the ``LOCAL ENCODING'' section in idn2.conf(5) for more details.
SEE ALSOidncmp(1), idnconv2(1), iconv(3), idn2.conf(5), idnalias.conf(5),
idnlang.conf(5)BUGS
The automatic input-code selection depends on your system, and some‐
times it cannot guess or guess wrong. It is better to explicitly spec‐
ify it using -in option.
Sep 21, 2012 idncheck(1)
