#!/bin/bash

#grep '23/Apr/2020' nowcoder.txt | awk '{print $1}' | sort | uniq -c | sort -k1rn | awk '{print $1 " " $2}'
grep '23/Apr/2020' nowcoder.txt | awk '{sum[$1]++ }END{for (i in sum) print sum[i] " "i}' | sort -k1rn