linux查看语句

 df -h  查看硬盘

free -m 查看内存

 cat /proc/cpuinfo   查看cpu信息

vi /etc/passwd 查看linux系统账号信息

创建账号及密码权限
grant all privileges on *.* to 'admin'@'%' identified by 'admin';

查看防火墙
iptables -nL

防火墙关闭
service iptables stop;

设置权限账号及密码
grant all on *.* to 'root'@'localhost' identified by 'root' with grant option;
flush privileges;

永久关闭防火墙
chkconfig iptables off
chkconfig iptables on

查看防火墙运行级别
chkconfig --list   iptables
3 5 是off开机就不启动 反之就是启动