nginx分析访问日志，过滤出每五分钟的访问量

awk -F: '{a[$2":"($3-$3%5)]++}END{for(i in a){split(i,t);print i" 至",t[1]":"t[2]+4," 访问 "a[i] " 次" | "sort -t: -k1n -k2n"}}' /var/log/nginx/access.log-20200417