ip-to-country
gawk
script
to convert
ip2c's
ip-to-country.csv to
Peter Jipsen's
more compact
ip-to-country.txt format.
NB. in
PHP $iplines etc. occupy about 13 megabytes.
(cf. using
ini_set("memory_limit",-1);
to disable PHP memory limit).
PHP code used to display GP paper
downloads.