#!/bin/sh
# tzposixrules.sh - extract POSIX rule at end of zoneinfo files

zid=/usr/share/zoneinfo/	# zoneinfo directory path

for zif in $(
		find $zid -type f	# files only
	)
do
	# dump all text strings with leading file path -f
	strings -f $zif	| \
	sed "
		\$!d		# delete all but last line - escape '$'
		/\/posix\//d	# delete .../posix/... paths
		/\/right\//d	# delete .../right/... paths
		/[^.]\+\.[^:]\+:/d	# delete *?.?* files
		s|^$zid||	# strip leading zoneinfo directory path
	#	s|:\s|\t|	# tab delimit fields - uncomment to enable
	"
done