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153 lines
8.8 KiB
XML
153 lines
8.8 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-config-locale" revision="systemd">
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<?dbhtml filename="locale.html"?>
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<title>Настройка системной локали</title>
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<indexterm zone="ch-config-locale">
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<primary sortas="e-etc-locale-conf">/etc/locale.conf</primary>
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</indexterm>
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<para>В приведенном ниже файле <filename>/etc/locale.conf</filename>
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задаются некоторые переменные окружения, необходимые для поддержки вашего языка.
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Правильная их установка влияет на:</para>
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<itemizedlist>
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<listitem>
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<para>Выходные данные программ, переводимых на ваш родной язык</para>
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</listitem>
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<listitem>
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<para>Правильную интерпретацию символов в буквы, цифры и другие классы.
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Это необходимо для того, чтобы <command>bash</command> правильно принимал
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не-ASCII символы, в командной строке в неанглоязычных языковых системах</para>
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</listitem>
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<listitem>
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<para>Правильную для страны сортировку по алфавиту</para>
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</listitem>
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<listitem>
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<para>Соответствующий формат бумаги по умолчанию</para>
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</listitem>
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<listitem>
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<para>Правильное форматирование денежных значений, значений времени и дат</para>
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</listitem>
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</itemizedlist>
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<para>Ниже замените <replaceable><ll></replaceable> двухбуквенным кодом нужного вам языка
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(например <quote>en</quote>), а
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<replaceable><CC></replaceable> двухбуквенным кодом соответствующей страны (например <quote>GB</quote>).
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<replaceable><charmap></replaceable> нужно заменить на каноническую кодировку для выбраной вами
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локали. Также могут присутствовать необязательные модификаторы, такие как <quote>@euro</quote>.</para>
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<para>Список всех локалей, поддерживаемых Glibc, можно получить, выполнив следующую команду:</para>
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<screen role="nodump"><userinput>locale -a</userinput></screen>
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<para>Таблицы символов могут иметь несколько синонимов. Например <quote>ISO-8859-1</quote>
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так же называют <quote>iso8859-1</quote> и <quote>iso88591</quote>.
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Некоторые приложения не могут корректно обрабатывать различные синонимы (например <quote>UTF-8</quote>
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должно быть указано как <quote>UTF-8</quote>, а не <quote>utf8</quote>), поэтому
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в большинстве случаев безопаснее всего выбрать каноническое имя для конкретной
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локали. Для определения канонического имени локали выполните следующую команду,
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заменив <replaceable><locale name></replaceable> на вывод <command>locale -a</command>
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для желаемой локали (например <quote>en_GB.iso88591</quote>).</para>
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<screen role="nodump"><userinput>LC_ALL=<replaceable><locale name></replaceable> locale charmap</userinput></screen>
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<para>For the <quote>en_GB.iso88591</quote> locale, the above command
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will print:</para>
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<screen><computeroutput>ISO-8859-1</computeroutput></screen>
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<para>This results in a final locale setting of <quote>en_GB.ISO-8859-1</quote>.
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It is important that the locale found using the heuristic above is tested prior
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to it being added to the Bash startup files:</para>
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<screen role="nodump"><userinput>LC_ALL=<locale name> locale language
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LC_ALL=<locale name> locale charmap
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LC_ALL=<locale name> locale int_curr_symbol
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LC_ALL=<locale name> locale int_prefix</userinput></screen>
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<para>The above commands should print the language name, the character
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encoding used by the locale, the local currency, and the prefix to dial
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before the telephone number in order to get into the country. If any of the
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commands above fail with a message similar to the one shown below, this means
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that your locale was either not installed in Chapter 8 or is not
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supported by the default installation of Glibc.</para>
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<screen><computeroutput>locale: Cannot set LC_* to default locale: No such file or directory</computeroutput></screen>
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<para>If this happens, you should either install the desired locale using the
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<command>localedef</command> command, or consider choosing a different locale.
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Further instructions assume that there are no such error messages from
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Glibc.</para>
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<!-- FIXME: the xlib example will become obsolete in the future.-->
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<para>Some packages beyond LFS may also lack support for your chosen locale. One
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example is the X library (part of the X Window System), which outputs the
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following error message if the locale does not exactly match one of the character
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map names in its internal files:</para>
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<screen><computeroutput>Warning: locale not supported by Xlib, locale set to C</computeroutput></screen>
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<para>In several cases Xlib expects that the character map will be listed in
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uppercase notation with canonical dashes. For instance, "ISO-8859-1" rather
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than "iso88591". It is also possible to find an appropriate specification by
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removing the charmap part of the locale specification. This can be checked
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by running the <command>locale charmap</command> command in both locales.
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For example, one would have to change "de_DE.ISO-8859-15@euro" to
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"de_DE@euro" in order to get this locale recognized by Xlib.</para>
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<para>Other packages can also function incorrectly (but may not necessarily
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display any error messages) if the locale name does not meet their expectations.
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In those cases, investigating how other Linux distributions support your locale
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might provide some useful information.</para>
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<para>Once the proper locale settings have been determined, create the
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<filename>/etc/locale.conf</filename> file:</para>
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<screen><userinput>cat > /etc/locale.conf << "EOF"
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<literal>LANG=<replaceable><ll>_<CC>.<charmap><@modifiers></replaceable></literal>
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EOF</userinput></screen>
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<para>Note that you can modify <filename>/etc/locale.conf</filename> with the
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systemd <command>localectl</command> utility. To use
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<command>localectl</command> for the example above, run:</para>
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<screen role="nodump"><userinput>localectl set-locale LANG="<replaceable><ll>_<CC>.<charmap><@modifiers></replaceable>"</userinput></screen>
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<para>You can also specify other language specific environment variables such
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as <envar>LANG</envar>, <envar>LC_CTYPE</envar>, <envar>LC_NUMERIC</envar> or
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any other environment variable from <command>locale</command> output. Just
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separate them with a space. An example where <envar>LANG</envar> is set as
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en_US.UTF-8 but <envar>LC_CTYPE</envar> is set as just en_US is:</para>
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<screen role="nodump"><userinput>localectl set-locale LANG="en_US.UTF-8" LC_CTYPE="en_US"</userinput></screen>
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<note><para>Please note that the <command>localectl</command> command
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doesn't work in the chroot environment. It can only
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be used after the LFS system is booted with systemd.</para></note>
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<para>The <quote>C</quote> (default) and <quote>en_US</quote> (the recommended
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one for United States English users) locales are different. <quote>C</quote>
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uses the US-ASCII 7-bit character set, and treats bytes with the high bit set
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as invalid characters. That's why, e.g., the <command>ls</command> command
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substitutes them with question marks in that locale. Also, an attempt to send
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mail with such characters from Mutt or Pine results in non-RFC-conforming
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messages being sent (the charset in the outgoing mail is indicated as <quote>unknown
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8-bit</quote>). It's suggested that you use the <quote>C</quote> locale only
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if you are certain that you will never need 8-bit characters.</para>
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<!--
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<para>UTF-8 based locales are not supported well by many programs.
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Work is in progress to document and, if possible, fix such problems, see
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<ulink url="&blfs-book;introduction/locale-issues.html"/>.</para>
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-->
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</sect1>
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