Ubuntu – Server locale C vs en_US.UTF-8

i18nlocalizationMySQLPHPUbuntu

I am considering to change all of my server locale to C by

"export LC_ALL=C"

Is it a common practice?

I am thinking will there be any side effect on a LAMP server, or should I just leave as using the default of "en_US.UTF-8"?

Best Answer

You might want to edit /etc/default/locale to set the locale as your export command will only affect the current environment. It will not affect already running programs.

The issue you had mentioned regarding grep was fixed a few years ago already:

fixed in grep 2.7, released Sep 20, 2010

In multibyte locales, regular expressions including backreferences
no longer exhibit quadratic complexity (i.e., they are orders
of magnitude faster). [bug present since multi-byte character set
support was introduced in 2.5.2]

In UTF-8 locales, regular expressions including "." can be orders
of magnitude faster.  For example, "grep ." is now twice as fast
as "grep -v ^$", instead of being immensely slower.  It remains
slow in other multibyte locales. [bug present since multi-byte
character set support was introduced in 2.5.2]

http://savannah.gnu.org/forum/forum.php?forum_id=6521

Related Solutions

Linux – Set default locale on linux server

For Ubuntu edit

/etc/default/locale

For Centos edit

/etc/sysconfig/i18n

Windows – Locale-unaware %DATE% and %TIME% in batch files

There were a few attempts (Rob van der Woude had something), but nothing really worked across all locales. However, you can get the current time in a easily-parseable format via

wmic os get LocalDateTime

The following gets you at least UTC already:

@echo off
rem Get the time from WMI - at least that's a format we can work with
set X=
for /f "skip=1 delims=" %%x in ('wmic os get localdatetime') do if not defined X set X=%%x
echo.%X%

rem dissect into parts
set DATE.YEAR=%X:~0,4%
set DATE.MONTH=%X:~4,2%
set DATE.DAY=%X:~6,2%
set DATE.HOUR=%X:~8,2%
set DATE.MINUTE=%X:~10,2%
set DATE.SECOND=%X:~12,2%
set DATE.FRACTIONS=%X:~15,6%
set DATE.OFFSET=%X:~21,4%

echo %DATE.YEAR%-%DATE.MONTH%-%DATE.DAY% %DATE.HOUR%:%DATE.MINUTE%:%DATE.SECOND%.%DATE.FRACTIONS%

However, you probably need to account for the time zone offset (unless it's for a log file, then I'd always use UTC) but that's nothing a bit of calculation cannot do :-)

Best Answer

Related Solutions

Linux – Set default locale on linux server

Windows – Locale-unaware %DATE% and %TIME% in batch files

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