Linux

Course ObjectivesWind Brother Oracle Database Tutorial 12CR2 (Project Combat series) V: Oracle 12.2 RAC Implementation and basic maintenance on Linux systems, including system installation and environment configuration, ASM storage configuration,

First, Introduction Yum's main function is more convenient to add/remove/update RPM packages, automatically solve the problem of package dependencies, easy to manage a large number of system update issues, the idea is to use a central warehouse

Guide In this article, we'll explain Cron and anacron, and show you how to set up Anacron in Linux. We will also compare these two tools. 650) this.width=650; "class=" Alignnone size-full wp-image-75111 "src="

Today in the creation of the file, found that the file permissions at the end of a T, did not notice before, and then create (open) with C two files to view, when I do not specify the permissions (omit the third parameter of open), sometimes also

DescriptionThis paper analyzes code based on 3.10 kernel, hardware platform for embedded arm platform. 2. RTC Subsystem Related filesdrivers/rtc/class.cdrivers/rtc/interface.cdrivers/rtc/rtc-core.hdrivers/rtc/rtc-dev.cdrivers/rtc/

I. The background of knowledge1. What is ARPARP, the Address Resolution Protocol, realizes its physical address through an IP address. In a TCP/IP network environment, each host is assigned a 32-bit IP address, which is a logical address that

Linux Gpio provides services to users through SYSFS, and here is a description of the Linux kernel, which you'll learn about.GPIO Sysfs Interface for userspace==================================platforms which use the "Gpiolib" implementors The

?? As is known to all, Windows and Linux are currently the most popular 2 operating systems. Windows system for ordinary users, it is the advantage of a graphical interface, easy to use, the threshold is very low, easy to get started, so, Windows

As is known to all, Windows and Linux are currently the most popular 2 operating systems. Windows system for ordinary users, it is the advantage of a graphical interface, easy to use, the threshold is very low, easy to get started, so, Windows

LinuxDelete Folder commandIn the time of the use of Linux, sometimes to delete a folder, often will prompt this file is not empty, can not be deleted, this cent, must use the RM-RF command. About some small white users often in the use of Linux

This book is a high-quality Linux technology self-study book written by a number of Red Hat Architects (RHCA) based on the RHEL7 system, each chapter of knowledge points from a practical and strong coherence, ideal for Linux beginners or as a

Linux Time synchronization Server SetupNTP(Network Time Protocol) is used to make the computerTime Synchronizationudp protocol 123 The port provides services externally, it can make the computer to its server or clock source (such as quartz clock,

1, what is the poll method, what is the function?2. Select System Call (function)Select system calls are used for multi-channel monitoring, and select blocks the calling process when no file satisfies the requirement.int select (int maxfd, fd_set

Linux displays memory size in GB[Email protected]:~$ free-g Total used free shared buffers Cachedmem: 2 1 1 0 0 0-/+ buffers/cache: 0 2Swap:

Linux Network Properties Configuration IP (Internet Protocol) Address: network number + host number Ipv4:32bits 8bits 8bits 8bits 8bits 0-255 0.0.0.0-255.255.255 IP Address Classification: Class A: The first paragraph is the

Linux wget is a tool for downloading files, which is used at the command line. This is an essential tool for Linux users, especially for network administrators, who often download software or restore backups from remote servers to a local server. If

Virtual Turn Physical Address Virt_to_phys (*ADDR);Physical to Virtual address phys_to_virt (*ADDR);Such as: Long Pprotectva; phys_addr_t protectpa; = Pprotectva; = Virt_to_phys ((void *) pprotectva);------------------------------------

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Iptables practical tutorial (1): Basic Concepts and Principles, iptables practical tutorialOverview Iptables is a built-in firewall software for linux. It is used to configure IPv4 packet filtering or NAT (ip6tables for IPv6 ). In linux, the

Remote Server login through ssh !, Ssh implementation Server To achieve remote login through ssh, the premise is that the server has enabled the ssh service. For how to enable it, refer to the previous article "enable the ssh service on Linux