Linux使用小结

1、统计网关写入量

tail -n 5000 /root/apache-tomcat-7.0.82/logs/local_log.`date +'%Y-%m-%d'`.txt |awk -F '[/-]' '{print $5}'|uniq -c|awk 'NR>2{print p}{p=$0}'|awk '{sum+=$1;t+=1}END{print "sum:"sum,"time:"t,"avg:"sum/t}'

2、检查tomcat服务 和 防火墙

systemctl status firewalld

ps  -aux  |grep  tomcat

netstat -anp |grep 8080

3、主机添加ip和主机名

echo `ifconfig |grep 172.125 |awk '{print $2}'` `hostname` >> /etc/hosts;

4、获取特定列 

cat data.txt | awk -F' ' '{print $4}'