2020-11-23 用信息扩充策略，实现sort -r

z@z-ThinkPad-X61:~/zshangke/20201123$seq 5 20 > 1;  ./z.cmd

20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5

z@z-ThinkPad-X61:~/zshangke/20201123$cat z.cmd

cat 1 > 2; cat 1 | xargs -i sed 's/^/{} /g' 2 | awk '{if($1>$2) print $0;}' >3

cat 1 | wc -l | sed 's/$/-2/g' | bc  | xargs -i seq {} \

 |  awk '{ system(" cat 3 >2;   cat 1 | xargs -i sed '\''s/^/{}/g'\'' 2 | awk '\''{if($1 > $2) print $0;}'\''  > 3 "); }'

cat 3