Установка Perl модуля JSON
FreeBSD
# cd /usr/ports/converters/p5-JSON && make && make install clean
Ubuntu
# apt-get install libjson-perl
CentOS
version: 6.6
# yum install perl-JSON
Alt Linux
# apt-get install perl-JSON
Установка с CPAN
# perl -MCPAN -e shell install JSON