setup-timezone: initial version of script

initial cut at a setup-timezone script

Makefile

@@ -23,6 +23,7 @@ SBIN_FILES	:= lbu\
 		setup-mta\
 		setup-acf\
 		setup-bootable\
+		setup-timezone\
 		update-conf
 
 SCRIPTS		:= $(LIB_FILES) $(SBIN_FILES)

setup-alpine.in

@@ -73,3 +73,10 @@ default_read setuprepos "n"
 if [ $setuprepos == "Y" ] || [ $setuprepos == "y" ]; then
 	$PREFIX/sbin/setup-apkrepos
 fi
+
+printf "Change timezone (default is UTC)? [y/N]?"
+default_read setuptz "n"
+
+if [ $setuptz == "Y" ] || [ $setuprtz == "y" ]; then
+	$PREFIX/sbin/setup-timezone
+fi

setup-timezone.in

+#!/bin/sh
+
+PREFIX=
+. "$PREFIX/lib/libalpine.sh"
+
+echo "Available areas:"
+echo "1) Australia"
+echo "2) Europe"
+echo "3) US & Canada"
+echo "4) Asia"
+echo "5) Central & South America"
+echo "6) Custom"
+echo "7) UTC"
+echo "Choose an available area [7]:"
+
+default_read areanum 7
+
+if [ $areanum -eq 1 ]; then
+	echo "Available Timezones:"
+	echo "1) Melbourne, Canberra, Sydney (EST-10EST-11)"
+	echo "2) Perth (WST-8)"
+	echo "3) Brisbane (EST-10)"
+	echo "4) Adelaide (CST-9:30CDT-10:30)"
+	echo "5) Darwin (CST-9:30)"
+	echo "6) Hobart (EST-10EDT-11)"
+	echo "Select a timezone [1]:"
+	default_read timezone 1
+	case $timezone in
+	1) timezonecode="EST-10EST-11";;
+	2) timezonecode="WST-8";;
+	3) timezonecode="EST-10";;
+	4) timezonecode="CST-9:30CDT-10:30";;
+	5) timezonecode="CST-9:30";;
+	6) timezonecode="EST-10EDT-11";;
+	*) timezonecode="UTC";;
+	esac
+	
+elif [ $areanum -eq 2 ]; then
+	echo "Available Timezones:"
+	echo "1) Amsterdam, Barcelona, Berlin, Brussels, Budapest, Copenhagen, Geneva, Madrid, Oslo, Paris, Prague, Rome, or Stockholm (CET1-CEST-2)"
+	echo "2) Athens, Helsinki, Tallinn (EET-2EEST-3)"
+	echo "3) Dublin (GMT+0IST-1)"
+	echo "4) Kyiv (EET-2EEST)"
+	echo "5) Lisbon (WET-0WEST-1)"
+	echo "6) London (GMT+0BST-1)"
+	echo "7) Moscow (MSK-3MSD)"
+	echo "8) St Petersburg (MST-3MDT)"
+	echo "Select a timezone [1]:"
+	default_read timezone 1
+	case $timezone in
+	1) timezonecode="CET1-CEST-2";;
+	2) timezonecode="EET-2EEST-3";;
+	3) timezonecode="GMT+0IST-1";;
+	4) timezonecode="EET-2EEST";;
+	5) timezonecode="WET-0WEST-1";;
+	6) timezonecode="GMT+0BST-1";;
+	7) timezonecode="MSK-3MSD";;
+	8) timezonecode="MST-3MDT";;
+	*) timezonecode="UTC";;
+	esac
+elif [ $areanum -eq 3 ]; then
+	echo "Available Timezones:"
+	echo "1) Hawaii (HAW10)"
+	echo "2) Alaska (AKST9AKDT)"
+	echo "3) Pacific (PST8PDT)"
+	echo "4) Mountain (MST7MDT)"
+	echo "5) Mountain - Arizona (MST7)"
+	echo "6) Central (CST6CDT)"
+	echo "7) Eastern (EST5EDT)"
+	echo "8) Atlantic (AST4ADT)"
+	echo "9) Atlantic New Brunswick (AST4ADT)"
+	echo "10) Newfoundland (NST+3:30NDT+2:30)"
+	echo "Select a timezone [1]:"
+	default_read timezone 1
+	case $timezone in
+	1) timezonecode="HAW10";;
+	2) timezonecode="AKST9AKDT";;
+	3) timezonecode="PST8PDT";;
+	4) timezonecode="MST7MDT";;
+	5) timezonecode="MST7";;
+	6) timezonecode="CST6CDT";;
+	7) timezonecode="EST5EDT";;
+	8) timezonecode="AST4ADT";;
+	9) timezonecode="AST4ADT";;
+	10) timezonecode="NST+3:30NDT+2:30";;
+	*) timezonecode="UTC";;
+	esac
+elif [ $areanum -eq 4 ]; then
+	echo "Available Timezones:"
+	echo "1) Jakarta (WIB-7)"
+	echo "2) Singapore (SGT-8)"
+	echo "3) Ulaanbaatar (ULAT-8ULAST)"
+	echo "Select a timezone [1]:"
+	default_read timezone 1
+	case $timezone in
+	1) timezonecode="WIB-7";;
+	2) timezonecode="SGT-8)";;
+	3) timezonecode="ULAT-8ULAST)";;
+	*) timezonecode="UTC";;
+	esac
+elif [ $areanum -eq 5 ]; then
+	echo "Available Timezones:"
+	echo "1) Brazil (BRST+3BRDT+2)"
+	echo "2) Argentina (UTC+3)"
+	echo "3) Central America (CST+6)"
+	echo "Select a timezone [1]:"
+	default_read timezone 1
+	case $timezone in
+	1) timezonecode="BRST+3BRDT+2";;
+	2) timezonecode="UTC+3";;
+	3) timezonecode="CST+6";;
+	*) timezonecode="UTC";;
+	esac
+elif [ $areanum -eq 6 ]; then
+	echo "Type in a timezone (e.g. EST-10 or CET-1CEST-2):"
+	default_read timezonecode UTC
+else
+	timezonecode="UTC"
+fi
+echo "Timezone: $timezonecode"
+echo "$timezonecode" > /etc/TZ
+