Here is a way to make simple barcodes

First get Gnu/Barcodes; it's in Ubuntu repositories under barcode.
Determine what numbers you want to generate.
example: 32220500000000 to 32220500000099
from bash prompt$ mkdir barcodes
from bash prompt$ cd barcodes
from bash prompt$ seq 32220500000000 32220500000099 >number_seq.txt
from bash prompt$ barcode -i number_seq.txt -o herearemybarcodes.ps -u “in” -t “4×12” -e code39

the above will print to an outfile in the barcode directory called herearemybarcodes.ps

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