shell sort

sort is awesome!

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使用空格作为分隔符的一个文本,13万条记录,想要以第一列的值倒序排列:

#-t是分隔符,中间不能有空格
#-k是列,不能有空格,
#1nr,表示第1列以number_sort方式reverse倒序排列
sort -t" " -k1,1nr source.txt>dest.txt

13万记录,3妙搞定!!

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