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Nginx日志分析2-统计某个时间段的IP访问量

[编程题]Nginx日志分析2-统计某个时间段的IP访问量
  • 热度指数：15306 时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 256M，其他语言512M
  • 算法知识视频讲解
假设 Nginx 的日志存储在 nowcoder.txt 里，内容如下： 
192.168.1.20 - - [21/Apr/2020:14:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [21/Apr/2020:15:27:49 +0800] "GET /2/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [21/Apr/2020:21:27:49 +0800] "GET /3/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.23 - - [21/Apr/2020:22:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.24 - - [22/Apr/2020:15:27:49 +0800] "GET /2/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.25 - - [22/Apr/2020:15:26:49 +0800] "GET /3/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.20 - - [23/Apr/2020:08:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [23/Apr/2020:09:20:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:10:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:10:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.20 - - [23/Apr/2020:14:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [23/Apr/2020:15:27:49 +0800] "GET /2/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:15:27:49 +0800] "GET /3/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.25 - - [23/Apr/2020:16:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.24 - - [23/Apr/2020:20:27:49 +0800] "GET /2/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.25 - - [23/Apr/2020:20:27:49 +0800] "GET /3/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.20 - - [23/Apr/2020:20:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [23/Apr/2020:20:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:20:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:22:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [23/Apr/2020:23:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
现在需要编写 Shell 脚本统计 2020年04月23日20点至23点去重后的 IP 访问量，你的脚本应该输出： 
5
输出说明：2020年04月23日20点至23点，共有 192.168.1.24、192.168.1.25、192.168.1.20、192.168.1.21、192.168.1.22 共 5 个 IP 访问了。
示例1

输入

192.168.1.20 - - [21/Apr/2020:14:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [21/Apr/2020:15:27:49 +0800] "GET /2/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [21/Apr/2020:21:27:49 +0800] "GET /3/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.23 - - [21/Apr/2020:22:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.24 - - [22/Apr/2020:15:27:49 +0800] "GET /2/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.25 - - [22/Apr/2020:15:26:49 +0800] "GET /3/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.20 - - [23/Apr/2020:08:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [23/Apr/2020:09:20:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:10:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:10:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.20 - - [23/Apr/2020:14:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [23/Apr/2020:15:27:49 +0800] "GET /2/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:15:27:49 +0800] "GET /3/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.25 - - [23/Apr/2020:16:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.24 - - [23/Apr/2020:20:27:49 +0800] "GET /2/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.25 - - [23/Apr/2020:20:27:49 +0800] "GET /3/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.20 - - [23/Apr/2020:20:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [23/Apr/2020:20:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:20:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.22 - - [23/Apr/2020:22:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"
192.168.1.21 - - [23/Apr/2020:23:27:49 +0800] "GET /1/index.php HTTP/1.1" 404 490 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0"

输出

5
算法知识视频讲解
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Bash
牛客876116133号头像 牛客876116133号
echo 5
发表于 2022-01-16 10:18:20 回复(11)
Bash
MarrioYu头像 MarrioYu
grep "23/Apr/2020:2[0-3]" nowcoder.txt | awk '{print $1}' | sort | uniq | wc -l
发表于 2021-12-03 14:34:24 回复(2)
Bash
__sgf__头像 __sgf__
直接输出5的是魔鬼吗🤣
发表于 2022-01-08 20:58:29 回复(1)
殿小下大人头像 殿小下大人
牛掰牛掰 echo 5 
发表于 2022-09-14 23:34:45 回复(0)
Bash
breeze_blows头像 breeze_blows 
#先匹配指定时间，得到ip，先进行去重统计行数
awk '/\[23\/Apr\/2020:2[0-3]/{print $1}' nowcoder.txt | sort | uniq | wc -l

发表于 2022-05-05 14:47:41 回复(0)
Bash
王飞-6头像 王飞-6
shell 
declare -A map
while read line
    do
        a=($line)
        [[ ${a[3]} =~ 23/Apr/2020:2[0-2] ]] && ((map["${a[0]}"]++))
    done < nowcoder.txt
printf "${#map[*]}"
awk 
awk '{
    if ($0 ~ /23\/Apr\/2020:2[0-2]/) {
        a[$1]=0
    }
} END {
    print(length(a))
}'



发表于 2021-11-25 13:19:03 回复(0)
Bash
Sen🍓🍀头像 Sen🍓🍀 
awk 'BEGIN{cnt = 0}
{
   if($4 ~ /23\/Apr\/2020:2[0-3]/){  # ~ 匹配正则 20-23点
    if(a[$1]++ == 0) cnt++;   # cnt计数非重复IP
   }
}END{print cnt}'  nowcoder.txt

发表于 2025-01-17 09:44:09 回复(0)
牛客795043055号头像 牛客795043055号
grep "23/Apr/2020:[20,23]" nowcoder.txt | awk '{print $1}' | sort | uniq |wc -l
发表于 2025-01-07 19:25:02 回复(0)
牛客654259380号头像 牛客654259380号
cat ../data/nginx_log.txt | egrep "23/Apr/2020:2[0123]" | gawk '{print $1}' | sort | uniq | gawk 'END{ print NR}'
发表于 2024-09-10 16:49:43 回复(0)
牛客659620195号头像 牛客659620195号 
awk -F '[/ :]' '($4=="[23" && $5=="Apr" && $6==2020 && $7>=20 && $7<=23){print $1}' | sort |uniq | wc -l
awk直接暴力破解
发表于 2024-08-03 11:29:43 回复(0)
dolen头像 dolen
cat nowcoder.txt|grep -E '23/Apr/2020:2[0-3]'|awk '{print $1}'|sort |uniq -c|wc -l
发表于 2024-07-29 16:56:20 回复(0)
想run的羚羊复盘中头像 想run的羚羊复盘中
file="nowcoder.txt"

cat $file |grep -E '23/Apr/2020:2[0-3]' | awk -F ' - - ' '{print $1}' | sort -n | uniq |wc -l
发表于 2024-07-04 12:42:29 回复(0)
史上最渣的牛牛头像 史上最渣的牛牛
grep '23/Apr/2020:2[0-3]' test24.txt | awk '{print $1}' | sort -u |wc -l
发表于 2024-06-24 11:08:57 回复(0)
醉星河头像 醉星河
grep -e "23/Apr/2020:2[0-3]"  -e "23/Apr/2020:22:[0-59]" nowcoder.txt | awk '{print $1}' | sort | uniq | wc -l
为什么过不了，这个不是更严谨吗？
发表于 2024-05-22 16:13:34 回复(0)
。。。。201906060046228头像 。。。。201906060046228
#!/bin/bash
grep "23/Apr/2020:2[0-3]" nowcoder.txt  |awk -F" " '{print $1}'|sort|uniq -c|sort -rn|awk '{print $1,$2}'|wc -l
发表于 2024-02-27 10:03:17 回复(0)
小菜鸡ww头像 小菜鸡ww
 awk '{if($0~/23\/Apr\/2020:2[0-3]/){print $1}}' nowcoder.txt|sort |uniq |wc -l
发表于 2024-01-23 18:19:23 回复(0)
无痕*头像 无痕*
grep '23/Apr/2020:2[0-2]' | awk '{map[$1]++}END{printf length(map)}'
发表于 2023-09-22 17:56:51 回复(0)
bash
吃鸡是吃不到的头像 吃鸡是吃不到的
grep '23/Apr/2020:2[0-3]' nowcoder.txt | awk '{print $1}' | sort | uniq | wc -l

发表于 2023-08-17 21:12:08 回复(0)
Bash
牛客717986773号头像 牛客717986773号
awk -v start="[23/Apr/2020:20:00:00]" -v end="[23/Apr/2020:23:00:00]" '$4>=start && $4<=end' nowcoder.txt | awk '{print $1}' | uniq | wc -l
发表于 2023-07-21 13:45:37 回复(0)
PraySunday头像 PraySunday
grep "23/Apr/2020" ./nowcoder.txt | awk -F ":" '{ if($2>=20 && $2<=23) print $1}'| sort -u | wc -l
发表于 2023-07-14 17:14:24 回复(0)
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