题解 | #Nginx日志分析2-统计某个时间段的IP#

#!/bin/bash

#grep -E "23\/Apr\/2020\:2[0-3]" "./nowcoder.txt" | awk -F ' ' '{list[$1]++}END{sum=0; for(i in list){sum++} print sum;}' 

awk '/23\/Apr\/2020\:2[0-3]/{list[$1]++}END{sum=0;for(i in list){sum++} print sum;}' "./nowcoder.txt"