linux 系统基础优化（测试环境）

#PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin

PermitRootLogin yes
PasswordAuthentication yes

hostnamectl set-hostname "修改主机名称:"

 

systemctl stop firewalld NetworkManager
systemctl disable firewalld NetworkManager

#会和网卡冲突的服务

systemctl stop avahi-daemon.socket
systemctl disable avahi-daemon.service

sudo systemctl stop avahi-daemon
sudo systemctl disable avahi-daemon

 

echo '* - nofile 65535' >> /etc/security/limits.conf

setenforce 0
sed -i '/^SELINUX=/c SELINUX=disabled' /etc/selinux/config #关闭selinx
sed -ri 's#(.*UseDNS.*)#\1\nUseDNS no#g' /etc/ssh/sshd_config

 

mkdir -p /tmp/yum.repo/; mv /etc/yum.repos.d/* /tmp/yum.repo/
curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

yum -y install bash-completion  bash-completion-extras net-tools  telnet  lrzsz sshd vim wget zip uzip  #安装基础软件 1

yum -y  install  expect  tree nc nmap tree dos2unix htop iftop iotop  psmisc nethogs glances bc #基础软件2

echo 'PS1="\[\e[01;31m\][\[\e[01;34m\]\u\[\e[01;32m\]@\h \[\e[01;35m\]\W\[\e[01;33m\]]\\$\[\e[0m\]"' >> /etc/profile ; source /etc/profile

read -p "输入IP末尾:" IP
w_IP=10.0.0.$IP
n_IP=172.16.1.$IP

sed -i "/^IPADDR/c IPADDR="$w_IP /etc/sysconfig/network-scripts/ifcfg-eth0
sed -i "/^IPADDR/c IPADDR="$n_IP /etc/sysconfig/network-scripts/ifcfg-eth1
echo "$w_IP $n_IP"
echo "正在重启"
init 6

grep -H 在匹配到结果左边显示文件名

grep -r 多级目录匹配

 

yum install --downloadonly --downloaddir=/opt/ntp ntp

lsblk -f

df -THi

 

sudo systemctl set-default graphical.target #默认开启图形化界面

sudo systemctl set-default multi-user.target #默认开启命令行界面

PasswordAuthentication

 

禁止cetnos命令行提示音

修改配置文件
vi /etc/inputrc

//去掉‘#’注释，并将none修改为off，对应指令如下（就在开头）
set bell-style none 改为 set bell-style off