deepin linux system requirements

-made password cracking tool to guess the password. The safer method is to set the shadow file/etc/shadow and only allow users with special permissions to read the file. In Linux, to use a shadow file, you must recompile all the utilities to support the shadow file. This method is troublesome. A simple method is to use the plug-in verification module (PAM ). Many Linux systems use

A file system is a subsystem that manages persistent data in the operating system, providing data storage and access capabilities. For server developers, the focus is on the UNIX (Linux) environment of the file system, such as partition and disk relationship, disk space, file type and permissions control, file links an

downloaded from many ftp.For the Linux system, he later expressed his admiration for the developer Linus. But he believes that the development of Linux is due to the fact that he is able to keep the Minix small, so that students can learn in a semester, and therefore not accept the expansion of many people around the world to minix

Shell script for Linux system and process resource monitoring, shelllinux During server O M, you often need to monitor various Server resources, such as CPU load monitoring, disk usage monitoring, and process count monitoring, to promptly notify the system administrator of an exception. This article describes several common monitoring

This article mainly introduces how to monitor Linux system and process resources by using Shell scripts. This article describes how to check whether a process exists, check the CPU usage of the Process, check the memory usage of the process, and check the handle usage of the process ,, for more information, see monitoring various resources on the server during server O M, such as CPU load monitoring, disk

system requirements of storage devices. In embedded Linux applications, the main storage devices are RAM (DRAM, SDRAM) and ROM (FLASH memory is often used). commonly used file system types based on storage devices include: jffs2, yaffs, cramfs, romfs, ramdisk, ramfs/tmpfs, etc. 1. FLASH-based file

In the process of server operation, often need to monitor the various resources of the server, such as: CPU load monitoring, disk usage monitoring, process number monitoring and so on, in order to alarm the system in time of abnormal, notify the system administrator. This article describes several common monitoring requirements and the preparation of shell script

From the point of view of application, Linux system is divided into two parts: kernel space and user space. Kernel space is a major part of the Linux operating system, but a kernel-only operating system cannot complete a user task. One, the main module of

-scale partners.The biggest competitor of Microsoft in the operating system field is the Linux camp. It doesn't matter. Because doors is open-source, it can imitate some Linux practices, plagiarism and reverse behavior that attracts a large number of technical experts may even cause a fatal blow to the opponent. 5. New customers, including new

Analysis of Linux 2.6 scheduling system content: td> 1. Preface 2. The n

Solaris SUN SPARC (normal PC)Linux History1 Minix was invented by Andrew S. Tanenbaum (Tan Ningbong). Minix was originally released in 1987, opening all the source code to university teaching and research work. 2000 re-changed to BSD licensing to become free and open source software.2 Linux Linus Torvalds (Linus. Torvalds), he built a new operating system kernel

Week 8 process switching and general execution of the system "20135239 original please specify the source" Linux kernel Analysis "MOOC course http://mooc.study.163.com/course/USTC-1000029000" one, Timing analysis of process scheduling and process scheduling The principle of operating system describes a large number of process scheduling algorithms, these algo

It is well known that Linux support for high concurrency is not good in the case of default parameters, mainly limited by the maximum number of open files in a single process, kernel TCP parameters and IO event allocation mechanism. The following adjustments are made in several ways to enable Linux systems to support high concurrency environments.Iptables relatedIf not, turn off or unload the iptables firew

Operating systems are getting more and more attention from computer users. The Linux operating system is also the most famous example in the development of free software and open source code. Before introducing various tuning parameters and performance monitoring tools for Linux systems, we need to discuss some performance indicators for

disk.-m16 allows the hard disk to read data in 16 sectors during an I/o interruption (depending on the specific hard disk ).③ D1: Enable the DMA mode.④ X66: In a hard disk that supports UDMA-capable, this parameter can support dual-DMA channel data transmission mode.⑤ U1: When Linux is dealing with disk interruptions, it can unmask other interruptions or respond to other interruption-related tasks.To view the above changes, run the following command:

to enter the user account and password. Only after they pass system verification can users enter the system. Like other Unix operating systems, Linux typically stores passwords in the/etc/passwd file after encryption. All users in Linux can read the/etc/passwd file. Although the password stored in the file has been en