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- Simulate system load on Linux
- System administrators often need to explore the impact on application performance under different loads. This means that the load must be artificially created repeatedly. Of course, you can do this with specialized tools, but sometimes you may not want or be able to install new tools. Every Linux distribution comes with tools for creating workloads. They are not as flexible as specialized tools, but they are readily available and require no special learning. CPU The following command will create CPU load by compressing random data and sending the result to /dev/null: cat /dev/urandom|gzip-9>/dev/null If you want a larger load, or the system has With multiple cores, you only need to compress and decompress the data, like this: c
- LINUX 428 2024-04-06 13:43:01
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- Install the 'Magic Lantern' teaching platform under Ubuntu
- This is a step-by-step guide on how to install Moodle ("Magic Lamp") on Ubuntu 16.04. Moodle (short for Modular-object-oriented dynamic learning environment) is a free and open source learning management system that provides teachers, students and administrators with a personalized learning environment. Moodle was created by the Moodle project and is led and coordinated by the Moodle headquarters [1]. Moodle has many very useful features, such as: Modern and easy-to-use interface Personalized dashboard Collaboration tools and activities All-in-one calendar Simple text editor Progress tracking company
- LINUX 1262 2024-04-06 09:10:01
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- Linux System Users: Exploring the Secrets of Identity and Permissions
- 1. Overview of Linux system users Within the Linux system structure, users play a pivotal role. Each user has his or her own username and unique user ID for effective identification and authority control. In addition, in addition to regular users, there is also the privileged user root, which has the highest level of system access. A deep understanding of the user mechanism in the Linux environment is of great significance, as it is related to both system governance and security. In the Linux operating system environment, we can detect user data that already exists in the system through the command line device. The following will explain in detail how to use various commands to query the status of various users in the Linux system. 2. View the /etc/passwd file in Lin
- LINUX 460 2024-04-06 09:07:16
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- Steps and solutions to create image backup using dd command
- Answer for image backup in Linux system: To create an image backup in Linux system, you can use various tools, the most commonly used of which is the dd command. The following are the steps to use the dd command to create a mirror backup: 1. Determine the name of the C drive device to be backed up. You can use the following command to list the currently connected C drive devices: sudofdisk-l2. Determine the path and name of the backup file. You can use The following command creates a backup file named backup.img: sudoddif=/dev/sdaof=/home/user/...andycall|1291 people read the hard disk image file (dd image, linux system) how to export the virtual machine to run ? Answer:U
- LINUX 804 2024-04-06 09:04:23
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- Linux kernel secure communication tool: in-depth analysis of xfrm configuration techniques
- In the Linux operating system environment, xfrm is regarded as one of the crucial subsystems, providing comprehensive protection for the IPsec protocol, covering encryption, authentication, and security policies. By carefully setting the xfrm parameters, we can enhance the security of network data transmission and achieve the purpose of secure communication. Next, the article will have an in-depth discussion on how to configure xfrm in the Linux kernel, including the basic principles of xfrm and its configuration techniques, as well as common problems you may encounter and corresponding suggested solutions. 1.xfrm Overview XFRM, the "Transport Framework", is one of the components of the Linux kernel IPsec protocol. Its core task is to encrypt and identify Internet information through data packet conversion.
- LINUX 1247 2024-04-06 08:07:23
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- DingTalk/Enterprise WeChat + Jiandao Cloud, customized and built enterprise-specific document collection management platform
- Based on DingTalk/Enterprise Momo + Jiandao Cloud, the company's own dedicated document collection management platform is customized and built. In addition to meeting diversified work scenarios, it also improves the efficiency of collaboration between company employees, whether it is work process discussions or related Notification of events is much more convenient. 1. Introduction to the background of the case company The protagonist of this case comes from a private expressway unit in Shandong. The main business includes investment, construction, operation, maintenance, management, rescue and clearing, cleaning and toll services of ordinary roads, tunnels, and bridges; cargo warehousing ( Except for physical dangerous goods); Overseas land cargo transportation agent. 2. The customer said, "Our unit has many levels of organizational structure. In the unit, after a document is received from the office, it is like walking through a maze. The process is very complicated. From the supervisor
- LINUX 594 2024-04-06 08:01:29
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- linux android sdk installation. Find out the installation secrets of Linux Android SDK and easily create a new world of development.
- Understanding Linux and AndroidSDK Before delving into the LinuxAndroidSDK installation method, it is necessary to understand the relevant basic concepts. As an open source operating system, Linux is suitable for a variety of devices, including home computers, servers, and mobile devices. AndroidSDK is a tool set specially developed for the Andriod platform. It has a rich set of convenient tools and supporting libraries built into it, making it an Android application. Develop preferred environment support. It can be seen that installing Linux Android SDK helps developers build a stable and resource-rich R&D environment. Preparation work Before installing the Linux version of Android SDK, please ensure that the computer hardware and operating system comply with the relevant requirements.
- LINUX 1244 2024-04-05 09:16:12
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- 6 free command examples that beginners should look at
- On a Linux system, sometimes you may want to quickly know the used and unused memory space of the system from the command line. If you are new to Linux, there is good news: there is a built-in command that can display this information: free. In this article, we will talk about the basic usage of the free command and some important functions it provides. All commands and usage mentioned in the article were tested on Ubuntu16.04LTS. Linuxfree command Let us take a look at the syntax of the free command: free [options] The man manual of the free command says: The free command displays the total amount of available and used physical memory and swap memory of the system, as well as the amount of memory used by the kernel.
- LINUX 1019 2024-04-05 09:13:15
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- Application system settings of user and user group files in Linux
- ID: ChinaUnix20131, user and user group files In Linux, user accounts, user passwords, user group information and user group passwords are all stored in different configuration files. In the Linux system, the created user account and its related information (except password) are stored in the /etc/passwd configuration file. Because all users have read permissions on the passwd file, the password information is not saved in the file, but in the /etc/shadow configuration file. In the passwd file, one line defines a user account. Each line is composed of multiple different arrays. The values of each array are separated by ":". Each array represents a certain aspect of the account's information.
- LINUX 1120 2024-04-05 09:10:02
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- Nexus private server easily retrieves account
- 1Stop the nexus service [root@node001bin]#/usr/local/nexus/nexus-2.14.5-02/bin/nexusstop********************** ******************WARNING-NOTRECOMMENDEDTORUNASROOT****************************** *************StoppingNexusOSS...StoppedNexusOSS.2 Enter the directory and modify the configuration file [root@node001~]#
- LINUX 691 2024-04-05 09:04:19
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- A must-have for Linux terminals! The secret of driver-free wireless network card
- 1. Background of Linux driver-free wireless network card In the current era of digital informatization, wireless networks have been integrated into our daily lives and have become an indispensable part. For Linux terminal users, a wireless network card with excellent compatibility and excellent stability is particularly critical. Therefore, the driver-free version of the wireless network card is very popular among users for its convenience, speed and remarkable effects. This kind of driver-free wireless network card not only saves the tedious steps of installing drivers in a Linux system environment, but also brings a better user experience. In the past, although the Linux system provided support for some brands or models of wireless network cards, some network cards still faced driver problems, causing trouble to users. However, thanks to science
- LINUX 1271 2024-04-05 08:19:11
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- Even a Linux novice can understand it in seconds! Easily check which JDK versions are installed on your Linux system
- As a Linux system administrator or developer, knowing how to check the Java Development Kit (JDK for short) version will be of great benefit to your work progress. With a series of efficient commands and operating procedures, you can easily grasp the version information of the JDK installed in the Linux system. This article will provide a detailed analysis of querying and confirming the selected JDK version in the Linux environment, displaying a list of all installed JDKs, and the specific steps for setting and converting different versions of JDK. 1. Check the default JDK version. In the Linux environment, OpenJDK is often pre-installed as the default Java development kit. If you want to know the JDK version installed by default on the system, you can use the following related commands to check: bashj
- LINUX 1297 2024-04-04 09:10:01
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- Linux stand-alone log audit
- 1: First check whether sudo and rsyslog services are installed. 2: If the service is not found, you can use yum to install related services. 3: Add content to the /etc/rsylog.conf file. 4: Check the content. After completing the above four steps, stand-alone log auditing is simple. Completed, if someone uses the sudo command to operate, we will check the log file to monitor the operation command and explain: This setting will only monitor when other users use the sudo command, but will not monitor other ordinary operations.
- LINUX 543 2024-04-04 09:01:20
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- Open source performance appraisal system: innovative performance evaluation, transparent, fair and cost-win-win
- 1. The concept of open source performance appraisal system. The open source performance appraisal system uses open source technology and community sharing concepts to provide organizations with independent customization and management evaluation process functions, allowing enterprises to make objective, fair and scientific personal performance evaluations. This system not only helps enterprises improve internal management efficiency, but also helps stimulate collaboration and competition among employees, thereby driving further improvements in the performance of the overall organization. In a modern society with highly developed informatization, many companies have discovered the limitations of traditional performance considerations. In this regard, the open source performance appraisal system emerged as an innovative solution strategy. Using open source technology, companies can break through the limitations of the traditional closed management model, improve the sensitivity and efficiency of employee performance evaluation, and ensure a fair evaluation process.
- LINUX 1337 2024-04-04 08:30:02
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- How to deploy applications to embedded Linux?
- Abstract: AWTK is a universal GUI engine developed by ZLG that can run on various operating systems. It has been favored by more and more developers and users since its release. AWTK is suitable for the embedded field. This article will explain how to deploy AWTK applications into the embedded development environment. AWTK has already been transplanted on multiple embedded platforms and provides corresponding template projects, such as: embedded Linux, AWorksOS, RT1052 bare system and STM32 bare system, etc. After the AWTK application is debugged in Windows, it is very convenient to deploy it to this embedded development environment. It only requires a few simple steps. Please see below for the specific content. Below we will use HelloDesigner-
- LINUX 985 2024-04-04 08:01:05
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