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- Quickly set up Linux operating system and Oracle database
- Preparation work: 1. Download and install Oracle's virtual machine software -VirtualBox: Here 2. Download OraclePre-BuiltDeveloperVMs (forOracleVMVirtualBox):Here. Find DatabaseAppDevelopmentVM in the Pre-BuiltVM page. This virtual machine template has built-in OracleLinux and many Oracle database development related software, and you can get started with almost no configuration. Let’s take a look at the software list: OracleLinux6.5OracleDatabase12cRele
- LINUX 917 2024-04-19 09:25:01
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- Install python3 under Linux CentOS7
- Under CentOS7, python2.7 is installed by default. Now I will teach you how to install python3: 1. First install the dependencies that may be used by python3.6 #yum-yinstallopenssl-develbzip2-develexpat-develgdbm-develreadline-develzlib-devel2. Download Python source code package, the address is https://www.python.org/downloads/source/, and then upload it through xftp, or directly use the wget command, wgethttps://www.
- LINUX 617 2024-04-18 12:20:01
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- Ideas to solve the problem that Xshell cannot connect to the virtual machine
- The first time I used xshell, I couldn't connect to Linux. I tried it for a long time and searched many solutions, but finally I solved it. Here I will share my own solution and list the solutions on the Internet. I hope it can help others. . 1. Your linuxip address is not configured. The ip address is not configured. You need to configure it yourself. There are many configuration methods on the Internet. Here is one: enter the vim/etc/sysconfig/network-scripts/ifcfg-eth0 command to change the content of this file to the following: Set the ip yourself, for example It is: 192.168.1.155 and then enter ifconfig-a to find your own IP and change it. 2Change yourself
- LINUX 1403 2024-04-17 09:01:06
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- Build a Git server under CentOS
- 1. First, you need to install Git. You can use the yum source to install it online: [root@localhostDesktop]#yuminstall-ygit2. Create a git user to run the git service addusergit3. Initialize the git warehouse: Here we choose /data/git/learngit. git as our git repository [root@localhostgit]#gitinit--barelearngit.gitInitializedemptyGitrepositoryin/data/git/learngit.git/ execute the above command
- LINUX 1552 2024-04-15 19:13:01
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- How to install postfix and set up sasl on CentOS6
- 1. CentOS6 has postfix installed by default. If the system does not have postfix, you can use the following command to install it. [root@mail~]#yum-yinstallpostfix2. Configure the main.cf of postfix, and configure smtp-auth to use the sasl function of dovecot. [root@mail~]#vi/etc/postfix/main.cf#Line 75: Remove the comment and set the host name. myhostname=mail.opsky.top#Line 83: Remove the comment and set the domain name. mydomain=opsky.top#Line 99: Remove the comment.
- LINUX 835 2024-04-15 14:30:01
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- Detailed explanation of the double type in C++ and how to retain three decimal points
- We know that in C language, if the output result is required to retain three decimal places, we can use the pritf() function to easily solve the problem. But C++’s output operator
- LINUX 1017 2024-04-15 11:25:20
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- How to create custom monitoring items with zabbix
- Background: Zabbix itself provides many optional monitoring items, which can meet most monitoring needs. Sometimes due to business needs, monitoring items need to be customized. The following takes creating a MySQL custom monitoring item as an example to share how to create a Zabbix custom monitoring item. Environment description: zabbix version: 3.0.3 Operating system: CentOS7 mysql version: 5.7.1 Implementation steps: 1. Modify zabbix_agentd.conf and add zabbix_agent configuration directory. The following is the configuration of my local zabbix: remove the comments from the following lines# Include=/usr/local/etc/zabbix_agentd.c
- LINUX 979 2024-04-14 21:01:16
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- A comprehensive list of visual SLAM solutions
- MoNoSLAM uses the extended Kalman filter as the backend, tracks the very sparse feature points on the front end, uses the current state of the camera and all landmark points as state quantities, and updates its mean and covariance. Advantages: In 2007, with the improvement of computer performance and the system's sparse way of processing images, this solution enabled the SLAM system to run online. (Previous SLAM systems basically could not run online, and could only rely on robots to carry data collected by cameras, and then perform positioning and mapping offline.) Disadvantages: MoNoSLAM has narrow application scenarios, a limited number of road signs, and coefficient feature points are easily lost, etc. Disadvantage, its development has now been stopped. PTAM(ParallelTrackingAndMappi
- LINUX 709 2024-04-14 13:31:01
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- How to deploy CSVN server on CentOS6.7
- Server required components: Minimal installation is acceptable (personal test), additional required components: jdk-8u91-linux-x64.gz, CollabNetSubversionEdge-5.1.4_linux-x86_64.tar.gzCollabNetSubversionEdge-5.1.4_linux-x86_64.tar.gzCollabNetSubversionEdge- 5.1.4_linux-x86_64.tar.gzstep1: Upload these two software packages to the /opt directory of the server and install jdk1.8tarzxvfjdk-8u91-l
- LINUX 593 2024-04-14 09:43:23
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- Implementing the apple and bug problem using C++
- Recently, I was tutoring children for the Olympiad Mathematical Olympiad class. I read a few questions and thought it would be more focused to write them down. Let’s sort them out. Hahaha. The problem is as follows: Apples and worms: You bought a box of n apples. Unfortunately, a worm was mixed into the box when you finished buying. The worm can eat one apple every x hours. Assume that the worm eats one apple. If you won't eat another one before, how many whole good apples do you have after y hours? Sample input: 1049 (meaning a box of 10 apples, eat one in 4 hours, how many will be complete after 9 hours?) Sample output: 7 Code implementation: Note that it is rounded up, and the default is down Rounded. The code is as follows: #include#includeusingnamespacestd;/*
- LINUX 569 2024-04-14 09:20:21
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- How to use the sed command tool
- sed Usage Using sed can realize most of the functions of grep, and it can also search and replace. Syntax: sed[options]'command'filenamesed[options]-fscriptfilefilenameOptions: -n: The -n option is used with the p command to indicate printing -e: Equivalent to --expression, multi-point editing, used to execute multiple commands on one line sed implements matching (grep) function = prints lines with root string [root@cham2sed]#sed-n'/root/'ptest.txtroot:x:0:0:root:/root:/b
- LINUX 931 2024-04-13 13:40:01
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- How to build an intelligent DNS system wdDNS under CentOS
- v3 functional highlights 1 Completely reconstructed, with higher performance and more stability 2 Data supports text and mysql database methods, more flexible and needs to be selected 3 Independent operation, not lazy wdCP, easier to deploy and expand 4 Supports API call development, easy to personalize Support and Service 5 supports batch operations, which is suitable for the special needs of station groups or special users. Currently v3 does not have business systems, such as multi-user support, online payment and self-service activation, traffic statistics, etc. It is more suitable for individuals or small and medium-sized enterprises for their own use, station group applications, and internal If you need a smart DNS operating version for network resolution applications, local DNS hijacking applications, etc., you can still consider the v2 version, or wait for the subsequent upgraded version of v3. In order to provide better service and support, v3 will continue to provide free basic version and paid advanced version. Version installation environment instructions
- LINUX 793 2024-04-13 08:04:20
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- How many minutes does it take to reboot Linux using the reboot command?
- The restart time for Linux to execute the reboot command depends on factors such as system configuration, startup service, and file system check. It is usually: mid-range server: 3-5 minutes. High-performance workstation: 2-3 minutes. Low-end virtual machine: 5-10 minutes. Systems that start a large number of services: may exceed 10 minutes
- LINUX 1550 2024-04-12 14:18:13
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- What are the classifications of linux systems?
- Linux systems can be divided into 6 categories according to their uses and characteristics: desktop distributions (Ubuntu), server distributions (RHEL), embedded systems (Yocto Project), mobile operating systems (Android), cloud computing platforms and special-purpose distributions ( Kali Linux, Puppy Linux).
- LINUX 1148 2024-04-12 14:15:16
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- What are the components of a linux system?
- The main components of a Linux system: Kernel: Responsible for hardware management, process scheduling, memory management and file systems. System libraries: Provide functions required for application development and operation. Shell: Provides a command line interface for interacting with the system. File system: A hierarchical structure that organizes and stores data. Desktop environment: Provides a graphical user interface (GUI) for intuitive interaction. Application software: Programs used to perform specific tasks. Documentation: Provides detailed information on commands, configuration, and troubleshooting.
- LINUX 1243 2024-04-12 14:06:14
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