replacement of 'sort | uniq'

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5 replies • 1970-01-01 08:00:00 +08:00

rrfeng

Apr 12, 2014

sort -u

duzhe0

Apr 12, 2014

@rrfeng
sort 不支持uniq的-c参数，而且它是排序的，如果我们只需要uniq，在数据量大时性能无法忍受

rrfeng

Apr 12, 2014

@duzhe0
awk 都是一句话的事

duzhe0

Apr 12, 2014

@rrfeng
就是用awk实现的

rrfeng

Apr 12, 2014

@duzhe0
对啊，所以我觉得没必要……