[if !supportLists]ü [endif]信息扩充策略实现行合并
z@z-ThinkPad-T400:~/zshangke/20201124$seq 5 9 > 1; ./z.cmd
5 6 7 8 9
z@z-ThinkPad-T400:~/zshangke/20201124$cat z.cmd
cat1 > 2;
cat1 | wc -l | sed 's/$/-1/g' | bc | xargs-i seq {} \
| awk'{ system(" cat 2 | xargs -i sed'\''s/^/{} /g'\'' 1 | sed -n "$1+1"p > 3; cat 3 > 2 "); }'
cat3








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