tail -n 10000 sample_dbl.txt | python sitemap.py | sort -k 1 -t $‘\t‘ | python sitecombiner.py > 1.sort
tail -n 10000 sample_dbl.txt | python sitemap.py | sort -k 1 -t $‘\t‘ | python sitecombiner.py | python sitereducer.py
原文：http://www.cnblogs.com/i80386/p/4202049.html