tzdate

#!/bin/bash

name=$(basename "$0")

if [ -z "$1" ]
then
	args="UTC US/Eastern US/Pacific Asia/Shanghai Europe/London"
	echo "Usage: $name timezone"
	echo
else
	args="$@"
fi

for i in $args
do
	if [ -f "/usr/share/zoneinfo/$i" ]
	then
		printf "%-16s %s\n" "${i}:" "$(TZ="$i" date)"
	else
		echo Error: Timezone $i not exist.
		exit 1
	fi
done

exit 0