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Update Linux常用操作命令.md
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studynotes/Linux常用操作命令.md

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* 查看磁盘占用 **:iostat -xdk 1**
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* 查看磁盘占用 **:df -lh**
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* nohup后台不打印解决 **:nohup python -u test.py > nohup.out 2>&1 &**
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* 查看防火墙状态 **:service iptables status**
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* 开启防火墙 **:service iptables start**
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* 关闭防火墙 **:service iptables stop**
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* centos6查看防火墙状态 **:service iptables status**
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* centos6开启防火墙 **:service iptables start**
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* centos6关闭防火墙 **:service iptables stop**
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* 查看端口占用 **:lsof -i:端口**
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* 给文件或者文件夹权限 **:chmod 777 文件名**
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* 查看tcp连接状态 **:netstat -plant | grep ip**
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* 抓取指定IP的tcp包数据 **: tcpdump src host 112.96.248.22 -Xvv > tcp.out**
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* 查看某一进程下的所有线程 **: ps -T -p 37772**
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* 查看centos版本 **: cat /etc/redhat-release**
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* centos7查看防火墙状态 **: firewall-cmd --state**
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* centos7关闭防火墙 **: systemctl stop firewalld.service**
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* centos7禁止开机启动防火墙 **: systemctl disable firewalld.service**
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## linux下离线安装python,先下载压缩包

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