1、查看apache進程: ps aux | grep httpd | grep -v grep | wc -l 2、查看80端口的tcp連接: netstat -tan | grep "ESTABLISHED" | grep ":80" | wc -l 3、通過日誌查看當天ip連接數,過濾重複: cat access_log | grep "20/Oct/2008" | awk '{print $2}' | sort | uniq -c | sort -nr 4、當天ip連接數最高的ip都在幹些什麼(原來是蜘蛛): 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、當天訪問頁面排前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端口的訪問看看誰最高: tcpdump -i eth0 -tnn dst port 80 -c 1000 | awk -F"." '{print $1"."$2"."$3"."$4}' | sort | uniq -c | sort -nr 接着從日誌裏查看該ip在幹嘛: cat access_log | grep 122.102.7.212| awk '{print $1" "$8}' | sort | uniq -c | sort -nr | less 7、查看某一時間段的ip連接數: grep "2006:0[7-8]" www20060723.log | awk '{print $2}' | sort | uniq -c| sort -nr | wc