mkdir -p /tmp/repo-bak
mv /etc/yum.repos.d/* /tmp/repo-bak/
配置阿里云基础yum源和epel源
cd /etc/yum.repos.d/
curl http://mirrors.aliyun.com/repo/Centos-7.repo -o Centos-7.repo
curl http://mirrors.aliyun.com/repo/epel-7.repo -o epel-7.repo
#CentOS7默认没有wget,curl的-o参数表示下载到的文件保存的路径和名称。
#阿里云镜像 https://opsx.alibaba.com/mirror
yum install net-tools vim tree htop iotop iftop iotop lrzsz sl wget unzip telnet nmap nc psmisc dos2unix bash-completion sysstat rsync nfs-utils -y
#lrzsz - 用作上传下载
#bash-completion - 参数也支持自动补全,该功能需要重新连接Xshell生效。
‘‘‘
systemctl disable firewalld.service
systemctl stop firewalld.service
‘‘‘
sed -i ‘/^SELINUX=/c SELINUX=disabled‘ /etc/selinux/config
setenforce 0
echo ‘* - nofile 65535‘ >> /etc/security/limits.conf
最大默认打开的文件数是1024,这里改成了65535
sed -i ‘/^HISTSIZE=/c HISTSIZE=10000‘ /etc/profile
echo "export PS1=‘\e[32m[\u@\h \W]\\$ \e[0m‘" >> /etc/profile
source /etc/profile
# $符号在这里需要两个撬棍,进行转义
cat ~/.vimrc
set tabstop=4
set shiftwidth=4
set expandtab " 使用空格替换TAB
set nocompatible " 关闭兼容模式(无需兼容vi)
set showcmd " 输入的命令显示出来,看的清楚些
hi MatchParen ctermbg=Black guibg=lightblue
" Must Exists
useradd wx
echo ‘123456‘ | passwd --stdin oldboy
cp /etc/issue /etc/issue.bak
> /etc/issue
cp /etc/issue.net /etc/issue.net.bak
> /etc/issue.net
cd /etc/sysconfig/network-scripts/ #进入网卡目录
mv ifcfg-eno16777728 ifcfg-eth0 #重命名网卡名称
cat ifcfg-eth0 #编辑网卡信息
TYPE=Ethernet
BOOTPROTO=static
DEFROUTE=yes
PEERDNS=yes
PEERROUTES=yes
IPV4_FAILURE_FATAL=no
NAME=eth0 #name修改为eth0
ONBOOT=yes
IPADDR=192.168.56.12
NETMASK=255.255.255.0
GATEWAY=192.168.56.2
DNS1=192.168.56.2
修改grub
cat /etc/sysconfig/grub #编辑内核信息,添加红色字段的
GRUB_TIMEOUT=5
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL_OUTPUT="console"
GRUB_CMDLINE_LINUX="crashkernel=auto rhgb net.ifnames=0 biosdevname=0 quiet"
GRUB_DISABLE_RECOVERY="true"
grub2-mkconfig -o /boot/grub2/grub.cfg #生成启动菜单
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.10.0-229.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-229.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-1100f7e6c97d4afaad2e396403ba7f61
Found initrd image: /boot/initramfs-0-rescue-1100f7e6c97d4afaad2e396403ba7f61.img
Done
验证是否修改成功
reboot #必须重启系统生效
yum install net-tools #默认centos7不支持ifconfig 需要看装net-tools包
ifconfig eth0 #在次查看网卡信息
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.56.12 netmask 255.255.255.0 broadcast 192.168.56.255
inet6 fe80::20c:29ff:fe5c:7bb1 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:5c:7b:b1 txqueuelen 1000 (Ethernet)
RX packets 152 bytes 14503 (14.1 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 98 bytes 14402 (14.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
原文:https://www.cnblogs.com/wangxiang135/p/13331704.html