MTD 248-645A Manual de usuario descargar pdf (Pagina 237)

Linux From Scratch - Version 7.0

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The list of all locales supported by Glibc can be obtained by running the following command:

locale -a

Charmaps can have a number of aliases, e.g., “ISO-8859-1” is also referred to as “iso8859-1” and “iso88591”. Some

applications cannot handle the various synonyms correctly (e.g., require that “UTF-8” is written as “UTF-8”, not

“utf8”), so it is safest in most cases to choose the canonical name for a particular locale. To determine the canonical

name, run the following command, where <locale name> is the output given by locale -a for your preferred

locale (“en_GB.iso88591” in our example).

LC_ALL=<locale name> locale charmap

For the “en_GB.iso88591” locale, the above command will print:

ISO-8859-1

This results in a final locale setting of “en_GB.ISO-8859-1”. It is important that the locale found using the heuristic

above is tested prior to it being added to the Bash startup files:

LC_ALL=<locale name> locale language

LC_ALL=<locale name> locale charmap

LC_ALL=<locale name> locale int_curr_symbol

LC_ALL=<locale name> locale int_prefix

The above commands should print the language name, the character encoding used by the locale, the local currency,

and the prefix to dial before the telephone number in order to get into the country. If any of the commands above fail

with a message similar to the one shown below, this means that your locale was either not installed in Chapter 6 or

is not supported by the default installation of Glibc.

locale: Cannot set LC_* to default locale: No such file or directory

If this happens, you should either install the desired locale using the localedef command, or consider choosing a

different locale. Further instructions assume that there are no such error messages from Glibc.

Some packages beyond LFS may also lack support for your chosen locale. One example is the X library (part of

the X Window System), which outputs the following error message if the locale does not exactly match one of the

character map names in its internal files:

Warning: locale not supported by Xlib, locale set to C

In several cases Xlib expects that the character map will be listed in uppercase notation with canonical dashes. For

instance, "ISO-8859-1" rather than "iso88591". It is also possible to find an appropriate specification by removing

the charmap part of the locale specification. This can be checked by running the locale charmap command in both

locales. For example, one would have to change "de_DE.ISO-8859-15@euro" to "de_DE@euro" in order to get this

locale recognized by Xlib.

Other packages can also function incorrectly (but may not necessarily display any error messages) if the locale name

does not meet their expectations. In those cases, investigating how other Linux distributions support your locale might

provide some useful information.

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MTD 248-645A Manual de usuario Pagina 237