New version of CentOS 7.0 features command update

Source: Internet
Author: User

viewing system version Information

Upgrade all packages, change software settings and system settings, and upgrade the system version kernel
#yum-y Update
Upgrade all packages, do not change the software settings and system settings, System version upgrade, the kernel does not change
#yum-y Upgrade
The configuration file for the hostname in CENTOS7 has changed, it is no longer/etc/sysconfig/network, the change/etc/hostname will take effect

In addition to modifying the/etc/resolv.conf, DNS can also set the/etc/sysconfig/network-scripts/ifcfg-eno16777728 directly in the NIC so that when the network service is restarted,/etc is generated Configuration in the/resolv.conf

viewing log files

Mount, take DHCP as an example

#ls dhcp* View the DHCP installation package
#rpm-UVH installation Package
#rpm-QC DHCP

Change of command
SYSTEMCTL is the System Service Manager command that combines the service and Chkconfig commands together

Open Linux ports using FIREWALLD:

Open port


Command meaning:

--zone #作用域

--add-port=80/tcp #添加端口 in the format: Port/Communication protocol

--permanent #永久生效, fail after reboot without this parameter

Restarting the firewall


This article is from the "Debris Memory" blog, please be sure to keep this source

New version of CentOS 7.0 features command update

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