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#!/usr/bin/env bash | |
# you can do things like this : | |
# % tz | |
# % tz 10h30 | |
# % tz 10h30 next week | |
# % tz 11:00 next thursday | |
# | |
# and so on, | |
# | |
# This needs gnu date, on MacOSX just install gnuutils from brew | |
# | |
# This needs bash v4 too, you need to install it from brew as well | |
# on MacOSX | |
# | |
set -eo pipefail | |
declare -A tzone | |
## Change this | |
tzone=( | |
["Bengalore"]="Asia/Calcutta" | |
["Brisbane"]="Australia/Brisbane" | |
["Paris"]="Europe/Paris" | |
) | |
# If that fails (old distros used to do a hardlink for /etc/localtime) | |
# you may want to specify your tz lie America/Chicago etc... | |
currenttz=$(/bin/ls -l /etc/localtime|awk -F/ '{print $(NF-1)"/"$NF}') | |
date=date | |
type -p gdate >/dev/null 2>/dev/null && date=gdate | |
athour= | |
args=($@) | |
if [[ -n ${1} ]];then | |
[[ $1 != [0-9]*(:|h)[0-9]* ]] && { echo "Invalid date format: $1 you need to specify a time first like tz 10h00 tomorrow!"; exit 1; } | |
athour="${1/h/:} ${args[@]:1}" | |
fi | |
for i in ${!tzone[@]};do | |
echo -n "$i: " | |
# bug in gnu date? 'now' doesn't take in consideration TZ :( | |
[[ -n ${athour} ]] && TZ="${tzone[$i]}" ${date} --date="TZ=\"$currenttz\" ${athour}" || \ | |
TZ=${tzone[$i]} ${date} | |
done |
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