[Centos]

I. Network Configuration

Ifconfig-a view IP Address

Dhclient automatically obtains the IP address

VI/etc/sysconfig/network-scripts/ifcfg-eth0 edit Nic Profile

Change bootproto to static to indicate the static IP address.

Ipaddr = our custom IP address ------ view through IP ADDR

Netmask = Subnet Mask

Gateway = gateway ------ view through route-n

Onboot = Yes (No by default) indicates starting the NIC

Dns1.dns2...

Peerdns = No

 

After the configuration is complete, you can restart the network by/etc/init. d/network restart or service network restart.

 

Ii. Use of Yum (similar to appstore)

Yum list

 
Software Package
 

Yum grouplist

Installation kit
 

Yum groupinstall "what"-y (Judge y or N)

Yum update

 
Upgrade all packages, change software and system settings, and upgrade the system version and kernel.
 

Yum upgrade

 
Upgrade all packages without changing the software and system settings. upgrade the system version without changing the kernel.
 

If you have already installed these commands, you will be notified of no changes.

Others,

1./etc/is the directory of the configuration file

2. # runlevel -- the default N value is 3,

3. Command for shutdown and restart: shutdown now

Reboot

Init 6 (0 indicates shutdown)

[Centos]