CentOS Tips¶
iptables¶
- 暂时关闭/打开
service iptables stop
service iptables start
- 永久打开/关闭
chkconfig iptables on
chkconfig iptables off
- 验证
chkconfig --list | grep iptables
network¶
service network restart
ntpdate¶
yum -y install ntp ntpdate
vim /etc/rc.d/rc.local
/usr/sbin/ntpdate cn.pool.ntp.org
telnet¶
yum install telnet
zip¶
yum -y install zip
sar¶
yum install sysstat
mail¶
yum -y install mailx
yum install sendmail
vim¶
yum -y install vim*
sudo¶
sudo visudo
sysadmin ALL=(ALL) NOPASSWD:ALL
AppStream¶
cd /etc/yum.repos.d
sudo mkdir backup
sudo mv *.repo backup/
sudo curl -o /etc/yum.repos.d/Centos-vault-8.5.2111.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
yum clean all && yum makecache