CENTOS-6.5系统基础优化

CentOS-6.5系统基础优化

1.设置history历史记录
echo '
export HISTFILE=$HOME/.bash_history
export HISTSIZE=2000
export HISTFILESIZE=2000
export HISTTIMEFORMAT="%F %T `whoami` "
export PROMPT_COMMAND="history -a; history -c; history -r;"
shopt -s histappend
typeset -r PROMPT_COMMAND
typeset -r HISTTIMEFORMAT ' > /etc/profile.d/history.sh
source /etc/profile
2.添加普通用户，设置sudo权限
username='dyt'
password='dyt2015'
useradd $username ; echo $password | passwd --stdin $username
sed -i "98 a$username ALL=(ALL) NOPASSWD: ALL" /etc/sudoers
3.禁止root远程用户登录
sed -i 's/#PermitRootLogin yes/PermitRootLogin no/' /etc/ssh/sshd_config
4.修改远程端口
sed -i 's/#Port 22/Port 9527/' /etc/ssh/sshd_config
/etc/init.d/sshd restart
5.精简开机启动服务器

for server in `chkconfig --list|egrep -v 'crond|network|rsyslog|sshd|iptables'|awk '{print $1}'`;do chkconfig $server off; done