gosko/dt

## dt
#!/bin/bash
#
# dt: display useful date/time info incl current time in various time zones
#
# Any optional extra args are passed along to 'date'.
#
# usage examples:
#
#  $ dt
#  $ dt --date '3 hours ago'
#
# Hour listing inspired by https://github.com/oz/tz
#

show () {
    tz=$1; shift
    place=$1; shift

    echo -n "$(TZ=$tz date +'%H:%M %a' "$@") "
    printf "%-9s " $place

    hour=$(TZ=$tz date +%k "$@")
    for i in {-6..6}; do
	if [ $i -eq 0 ]; then echo -n $bold; fi
	printf "%02d" $((($hour+$i+24)%24))
	if [ $i -eq 0 ]; then echo -n $sgr0; fi
	echo -n " "
    done
    echo " $(TZ=$tz date +'%4Z (UTC%z)' "$@")"

}

bold=$(tput bold)
sgr0=$(tput sgr0)

echo
/usr/bin/cal -3
echo

show Australia/Sydney Sydney    "$@"
show Asia/Tokyo       Japan     "$@"
show Asia/Shanghai    China     "$@"
show Indian/Reunion   Reunion   "$@"
show Europe/Paris     France    "$@"
show Europe/London    London    "$@"
show UTC              UTC       "$@"
show US/Eastern       Boston    "$@"
show US/Central       Chicago   "$@"
show Canada/Mountain  Edmonton  "$@"
show Canada/Pacific   Vancouver "$@"

echo
	#!/bin/bash
	#
	# dt: display useful date/time info incl current time in various time zones
	#
	# Any optional extra args are passed along to 'date'.
	#
	# usage examples:
	#
	# $ dt
	# $ dt --date '3 hours ago'
	#
	# Hour listing inspired by https://github.com/oz/tz
	#

	show () {
	tz=$1; shift
	place=$1; shift

	echo -n "$(TZ=$tz date +'%H:%M %a' "$@") "
	printf "%-9s " $place

	hour=$(TZ=$tz date +%k "$@")
	for i in {-6..6}; do
	if [ $i -eq 0 ]; then echo -n $bold; fi
	printf "%02d" $((($hour+$i+24)%24))
	if [ $i -eq 0 ]; then echo -n $sgr0; fi
	echo -n " "
	done
	echo " $(TZ=$tz date +'%4Z (UTC%z)' "$@")"

	}

	bold=$(tput bold)
	sgr0=$(tput sgr0)

	echo
	/usr/bin/cal -3
	echo

	show Australia/Sydney Sydney "$@"
	show Asia/Tokyo Japan "$@"
	show Asia/Shanghai China "$@"
	show Indian/Reunion Reunion "$@"
	show Europe/Paris France "$@"
	show Europe/London London "$@"
	show UTC UTC "$@"
	show US/Eastern Boston "$@"
	show US/Central Chicago "$@"
	show Canada/Mountain Edmonton "$@"
	show Canada/Pacific Vancouver "$@"

	echo