perl -MCPAN -e 'install "You will need GD::Barcode for the new barcode
generator"'

perl -MCPAN -e 'install "You will need PDF::Reuse::Barcode for the new
barcode generator"'
05:11:49@koha-2.2.7 #
05:11:51@koha-2.2.7 # apt-get install libgd-barcode-perl
Reading package lists... Done
Building dependency tree... Done
libgd-barcode-perl is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 33 not upgraded.