1,查看apache进程:
ps aux | grep httpd | grep -v grep | wc -l
2,查看80端口的tcp连接:
netstat -tan | grep “ESTABLISHED” | grep “:80” | wc -l
3,通过日志查看当天ip连接数,过滤重复:
cat access_log | grep “20/Oct/2008” | awk ‘{print $2}’ | sort | uniq -c | sort -nr
4,当天ip连接数最高的ip都在干些什么(原来是蜘蛛):
cat access_log | grep “20/Oct/2008:00” | grep “122.102.7.212” | awk ‘{print $8}’ | sort | uniq -c | sort -nr | head -n 10
5,当天访问页面排前10的url:
cat access_log | grep “20/Oct/2008:00″ | awk ‘{print $8}’ | sort | uniq -c | sort -nr | head -n 10
6,用tcpdump嗅探80端口的访问看看谁最高
tcpdump -i eth0 -tnn dst port 80 -c 1000 | awk -F”.” ‘{print $1″.”$2″.”$3″.”$4}’ | sort | uniq -c | sort -nr

接着从日志里查看该ip在干嘛:

cat access_log | grep 122.102.7.212| awk '{print $1"\t"$8}' | sort | uniq -c | sort -nr | less
7,查看某一时间段的ip连接数:
grep "2006:0[7-8]" www20060723.log | awk '{print $2}' | sort | uniq -c| sort -nr | wc -l
==============================nginx
log_format main '[$time_local] $remote_addr $status $request_time $body_bytes_sent "$request" "$http_referer"';
access_log /data0/logs/access.log main;
格式如下:
[21/Mar/2011:11:52:15 +0800] 58.60.188.61 200 0.265 28 "POST /event/time HTTP/1.1" "http://host/loupan/207846/feature"
通过日志查看当天ip连接数,过滤重复
cat access.log | grep "20/Mar/2011" | awk '{print $3}' | sort | uniq -c | sort -nr
38 112.97.192.16
20 117.136.31.145
19 112.97.192.31
3 61.156.31.20
2 209.213.40.6
1 222.76.85.28
当天访问页面排前10的url:
cat access.log | grep "20/Mar/2011" | awk '{print $8}' | sort | uniq -c | sort -nr | head -n 10
找出访问次数最多的10个IP
awk '{print $3}' access.log |sort |uniq -c|sort -nr|head
10680 10.0.21.17
1702 10.0.20.167
823 10.0.20.51
504 10.0.20.255
215 58.60.188.61
192 183.17.161.216
38 112.97.192.16
20 117.136.31.145
19 112.97.192.31
6 113.106.88.10
找出某天访问次数最多的10个IP
cat /tmp/access.log | grep "20/Mar/2011" |awk '{print $3}'|sort |uniq -c|sort -nr|head
38 112.97.192.16
20 117.136.31.145
19 112.97.192.31
3 61.156.31.20
2 209.213.40.6
1 222.76.85.28
当天ip连接数最高的ip都在干些什么:
cat access.log | grep "10.0.21.17" | awk '{print $8}' | sort | uniq -c | sort -nr | head -n 10
224 /test/themes/default/img/logo_index.gif
224 /test/themes/default/img/bg_index_head.jpg
224 /test/themes/default/img/bg_index.gif
219 /test/vc.php
219 /
213 /misc/js/global.js
211 /misc/jsext/popup.ext.js
211 /misc/js/common.js
210 /sladmin/home
197 /misc/js/flib.js
找出访问次数最多的几个分钟
awk '{print $1}' access.log | grep "20/Mar/2011" |cut -c 14-18|sort|uniq -c|sort -nr|head
24 16:49
19 16:17
16 16:51
11 16:48
4 16:50
3 16:52
1 20:09
1 20:05
1 20:03
1 19:55

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