fix-locale - Configure system messages in en_US and use other locale for everything else

fix-locale

#!/bin/bash

# fix-locale - Configure system messages in en_US and use other locale for everything else
# Andres Hernandez - tonejito

# https://gist.github.com/tonejito/f4bcde9e6bfb7e8c9df2612d588d41ea
# https://www.debian.org/doc/manuals/debian-reference/ch08.en.html#_the_locale
# https://www.debian.org/doc/manuals/debian-reference/ch09.en.html#_customized_display_of_time_and_date
# https://help.ubuntu.com/community/Locale
# https://stackoverflow.com/a/16553351
# http://mywiki.wooledge.org/BashFAQ/006#Indirection
# http://tldp.org/LDP/abs/html/ivr.html

# Provides default value for LC_* variables that have not been explicitly set. 
LANG=es_MX.UTF-8
LANGUAGE=es_MX:es

# Overrides individual LC_* settings: if LC_ALL is set, none of the below have any effect. 
LC_ALL=

# What language should be used for system messages. 
LC_MESSAGES=en_US.UTF-8

# Determines how responses (such as Yes and No) appear in the local language 
LC_RESPONSE=en_US.UTF-8

# How characters are classified as letters, numbers etc.
# This determines things like how characters are converted between upper and lower case. 
LC_CTYPE=es_MX.UTF-8

# How strings (file names...) are alphabetically sorted.
# Using the "C" or "POSIX" locale here results in a strcmp()-like sort order,
# which may be preferable to language-specific locales. 
LC_COLLATE=es_MX.UTF-8

# How you format your numbers.
# For example, in many countries a period (.) is used as a decimal separator,
# while others use a comma (,). 
LC_NUMERIC=es_MX.UTF-8

# How your time and date are formatted.
# Use for example "en_DK.UTF-8" to get a 24-hour-clock in some programs. 
LC_TIME=es_MX.UTF-8

# What currency you use, its name, and its symbol. 
LC_MONETARY=es_MX.UTF-8

# Paper sizes: 11 x 17 inches, A4, etc. 
LC_PAPER=es_MX.UTF-8

# How names are represented (surname first or last, etc.). 
LC_NAME=es_MX.UTF-8

# How addresses are formatted (country first or last, where zip code goes etc.). 
LC_ADDRESS=es_MX.UTF-8

# What your telephone numbers look like. 
LC_TELEPHONE=es_MX.UTF-8

# What units of measurement are used (feet, meters, pounds, kilos etc.). 
LC_MEASUREMENT=es_MX.UTF-8

# Metadata about the locale information. 
LC_IDENTIFICATION=es_MX.UTF-8

ARGS=""

# Build ARGS list from variables
for VAR in \
  LANG LANGUAGE LC_ALL \
  LC_MESSAGES LC_RESPONSE \
  LC_CTYPE LC_COLLATE LC_NUMERIC LC_TIME LC_MONETARY LC_PAPER LC_NAME LC_ADDRESS LC_TELEPHONE LC_MEASUREMENT LC_IDENTIFICATION
do
  # From update-locale(8)
  # When variables have no value assigned, they are removed from the locale file.
  if [ -z "${!VAR}" ]
  then
    # Pass empty VAR to ARGS
    ARGS="${ARGS} ${VAR} "
  else
    # Pass VAR=value to ARGS
    ARGS="${ARGS} ${VAR}=${!VAR} "
  fi
done

# Configure system to match configuration

echo "${PS2} dpkg-reconfigure -p low locales"
dpkg-reconfigure -p low locales
echo $?

echo "${PS2} egrep -v '^\s*(#|$)' /etc/locale.gen"
egrep -v '^\s*(#|$)' /etc/locale.gen
echo $?

echo "${PS2} update-locale ${ARGS}"
update-locale ${ARGS}
echo $?

echo "${PS2} cat /etc/default/locale"
cat /etc/default/locale
echo $?

echo "${PS2} locale"
locale
echo $?