Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os

error was 14: PYCURL ERROR 6 - "Couldn't resolve host 'mirrorlist.centos.org'

# 这种错误是因为网络问题,没有配置/etc/resolv.conf,在这个文件里写入nameserver 8.8.8.8即可.

# 备份你的原镜像文件,出错后还可以恢复

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

# 下载新的CentOS-Base.repo到/etc/yum.repos.d/

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

yum makecache  # 生成缓存

yum clean all  # 清除缓存

chkconfig NetworkManager off

service NetworkManager stop

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo

yum repolist  # 验证是否成功

# 如果出错,就编辑vi epel.repo,取消baseurl的注释,将mirrorlist行注释,就差不多了.

# Centos7同理

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

iptables -F

/etc/init.d/iptables save

chkconfig iptables off

service iptables stop

在安装完gcc后,编译报错,需要编辑bytesex.h文件,添加一行

vim bytesex.h

#if      defined(__i386__) \

        || defined(__x86_64__) \

        || defined(__alpha__) \

# hping3命令用法详解:http://www.searu.org/16384.html

# hping3命令:http://man.linuxde.net/hping3

# hping的使用方式:http://blog.csdn.net/lhl_blog/article/details/19572631

# iftop的安装和简单使用:https://www.cnblogs.com/chaichuan/p/4442610.htm

来自: http://man.linuxde.net/hping3

来自: http://man.linuxde.net/hping3