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(Reprinted from: http://jingyan.baidu.com/article/ff42efa9423991c19e22020d.html)Preparation work 1. A normal computer (not installed operating system does not matter), to ensure that the computer hard disk has 10G of free space. 2. A u disk to ensure that there is 2G of free space on the USB stick. Steps/Methods Do
think that first, we need to clarify the point of view that security must be considered first when performing any operations on the server, upgrading or modifying any configuration file or software, it's not something new, it's better. That's why linux management feels different from windows. For windows, we recommend that you use the latest version of the software and operating system, in fact, I personal
-based support or a strong development platform. Engine Yard should be worth your attention. They know almost everything about Rails, configure your application in 5 minutes, and keep your latest Rails-related development progress. Facebook's largest social network in the world, with more than 0.35 billion users. Technologies on this platform use open-source architectures, such as Linux, PHP, memcached, and MySQL. They chose to build their services based on Linux and other
Data can not be separated from server storage, Linux is free, open source, relatively stable and secure relative to other operating systems, is the preferred operating system for server-side deployment.There are a lot of learning materials about Linux on the web, just a simple list of Linux Learning Essentials.The most
Basic article: Operating system, computer network, design modeOne: Operating system1. What is the status of the process, the state transition diagram, and the event that caused the conversion.2. The difference between a process and a thread.3. Process communication in several ways.4. Thread synchronization in several ways. (Must write producer, consumer problem,
something new, it's better. That's why linux management feels different from windows. For windows, we recommend that you use the latest version of the software and operating system, in fact, I personally think this is a business behavior. In terms of system management, this is very bad. Using new software and systems may bring new problems, and some may even be
lifting hardware). As a system administrator, I think, first of all, we have to be clear about the idea that any operation on the server, upgrades and modifications to any configuration file or software, must first consider security, not the newer things the better, which is why Linux management feel and Windows different places, Windows first recommended everyone to use its latest version of software and operat
Overview This article discusses how to query the TCP/IP protocol stack of a host to collect valuable information. FirstFirst, I enumerated several "classic" operating system identification methods outside the stack fingerprint. And thenI described the "process status" of the stack fingerprint tool. Next, let the remote host leak itsSome techniques of information. Finally detailing my implementation (NMAP),
case. Linux has powerful networking capabilities and its TCP/IP code is the highest level. Linux provides full support for the current TCP/IP protocol, and includes support for the next generation Internet protocol IPv6. The Linux kernel also includes IP firewall code, IP anti-counterfeiting, IP service quality control, and many security features. These features are comparable to those of high-end routing devices provided by Cisco and other companies. These application cases prove that Linux is
. With the expansion of enterprise business, the number of emails being sent and received gradually increases, and the possibility of being attacked by mail viruses and spam is also increasing. This protects the email system against viruses, anti-spam poses new requirements. The winmail server can be integrated with anti-virus software installed on your operating syst
actually the function of filling, first of all to determine whether there is a task waiting for the current event, if there is a direct msg etc to wait for the task, if not then into the third part, Determine if there is a msg in the current oseventptr, if there is no task to remove the MSG, this will return an error, if there is no MSG in oseventptr, then put MSG in Oseventptr, waiting for the task to take out.Through learning Sem,mutex,queue and mbox kernel implementation can generally unders
Abraham Silberschatz et al 7ed The operating system provides roughly the following services:1. User interface2. Program execution3. IO operation4. File System operation5. Communication6. Error detection7. Resource allocation8. Statistics9. Protection and safety System calls are divided into 5 major categories:1. Proces
Step 1: Download the JDK 1.7 installation packageJDK 1.7:http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.htmlThere are two points to note during the download process: 1: note the operating system version, and the 32-bit or 64-bit operating system. As shown below, Linux is divided x86, x64
state process is not CPU-bound.4. Time slice rotation scheduling algorithm (RR)Features: The modern time-sharing system is widely used, UNIX Linux Windows Operating system Use this method and priority, preemptive scheduling combined with the process scheduling algorithm.Impact factors: The system's response time requirements, the number of processes in the ready
, the URL is: http://www.broadview.com.cn/01577 (need to log in first), can also be in HTTP://OSFROMSCRATCH.ORG/DOWNLOADCN Download the source code. First, start to build the working environment: 1. One computer (Windows operating system) 2. Virtual Machine VirtualBox Can be downloaded on the official website, download address: http://www.virtualbox.org/wiki/Downloads VirtualBox is chosen because it is ope
Article title: Operating system FreeNAS0.69.2 released. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. FreeNAS is a small FreeBSD-based operating
Operating System (7)-Storage Management Storage Management I. Basic concepts: What is a storage device?A device that stores files, data, or other things on a computer. What is storage management?: Even if you manage the computer's "Main Memory", assign it to the user according to the requirements of the user program It also protects the applications and data stored in the primary storage from being d
L Inux graduated from Linus Torvalds , University of Helsinki, Finland Linux is a multi-user, multi-process, multi-threaded, real-time performance, powerful and stable, fully open source systemLinux is a tree-structured directory system in which any program is represented by a fileLinux System CompositionLinux Operating syst
Article Title: linux operating system optimization and Security (I ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. I have seen many good articles on linux Optimization on the internet, and I will not repeat these articles h
1. Process five state and state transition diagramFive states: New, ready, run, block, exitThe problems and solutions of the five-state process: When multiple processes compete for resources, it can lead to insufficient memory and the ready queue is full. CPU speed is much faster than IO speed, many processes are in a blocking state, the CPU is idle, the utilization is low. Workaround, program and data (not including PCB) that partially run the process (blocking the process) to
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