


Detailed explanation of CentOS program installation and installation location
php editor Youzi will give you a detailed explanation of CentOS program installation and installation location. In the CentOS system, the installation location of the program is very important. Choosing the correct installation location can help us better manage and maintain the program. This article will start from different installation locations such as the root directory, usr directory, and opt directory, and introduce you to the characteristics and applicable scenarios of different locations to help you better install and manage programs and improve system stability and security. Whether you are a beginner or an experienced administrator, this article will provide you with helpful reference and guidance.
1. Program installation method
On CentOS, you can use the following methods to install the program:
(1) Use the yum command Installation:
```shell
sudo yum install package_name
```
(2) Use the dnf command to install (CentOS 8 and above dnf is used by default):
sudo dnf install package_name
When executing the above command, the system will automatically download and install the specified software package and its dependencies from the software repository.
2. Program installation location
On CentOS, program files are usually installed in the following locations:
(1)/usr/bin: Default installation of executable program files location, most user commands are located in this directory.
(2)/usr/lib: The installation location of library files. These files are usually required when the program runs.
(3)/usr/share: The installation location of documents, examples and other shared files.
(4)/etc: The installation location of configuration files. These files are used to configure the running parameters and behavior of the program.
It should be noted that some programs may choose to install to other custom directories. To know where a specific program is installed, you can consult its documentation or use the following command to find:
whereis package_name
This command will display the relevant file locations of the specified program, including executable files, source files, configuration files, etc.
To install programs on CentOS, you mainly use yum or dnf package managers. The installed files are usually located in directories such as /usr/bin, /usr/lib, /usr/share and /etc. By consulting the documentation Or use the whereis command to find the installation location of a specific program. I hope this article can help you better manage and use programs in the CentOS system. If you have any questions or other needs, please feel free to leave a message in the comment area.
Share: A little LINUX knowledge
In the Linux system, you can use the "man" command to view the manual page of the command and obtain detailed usage and option instructions. Just enter " man " is enough. To view the man page of the ls command, you can run "man ls".
The above is the detailed content of Detailed explanation of CentOS program installation and installation location. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics











Backup and Recovery Policy of GitLab under CentOS System In order to ensure data security and recoverability, GitLab on CentOS provides a variety of backup methods. This article will introduce several common backup methods, configuration parameters and recovery processes in detail to help you establish a complete GitLab backup and recovery strategy. 1. Manual backup Use the gitlab-rakegitlab:backup:create command to execute manual backup. This command backs up key information such as GitLab repository, database, users, user groups, keys, and permissions. The default backup file is stored in the /var/opt/gitlab/backups directory. You can modify /etc/gitlab

The CentOS shutdown command is shutdown, and the syntax is shutdown [Options] Time [Information]. Options include: -h Stop the system immediately; -P Turn off the power after shutdown; -r restart; -t Waiting time. Times can be specified as immediate (now), minutes ( minutes), or a specific time (hh:mm). Added information can be displayed in system messages.

The key differences between CentOS and Ubuntu are: origin (CentOS originates from Red Hat, for enterprises; Ubuntu originates from Debian, for individuals), package management (CentOS uses yum, focusing on stability; Ubuntu uses apt, for high update frequency), support cycle (CentOS provides 10 years of support, Ubuntu provides 5 years of LTS support), community support (CentOS focuses on stability, Ubuntu provides a wide range of tutorials and documents), uses (CentOS is biased towards servers, Ubuntu is suitable for servers and desktops), other differences include installation simplicity (CentOS is thin)

Improve HDFS performance on CentOS: A comprehensive optimization guide to optimize HDFS (Hadoop distributed file system) on CentOS requires comprehensive consideration of hardware, system configuration and network settings. This article provides a series of optimization strategies to help you improve HDFS performance. 1. Hardware upgrade and selection resource expansion: Increase the CPU, memory and storage capacity of the server as much as possible. High-performance hardware: adopts high-performance network cards and switches to improve network throughput. 2. System configuration fine-tuning kernel parameter adjustment: Modify /etc/sysctl.conf file to optimize kernel parameters such as TCP connection number, file handle number and memory management. For example, adjust TCP connection status and buffer size

Steps to configure IP address in CentOS: View the current network configuration: ip addr Edit the network configuration file: sudo vi /etc/sysconfig/network-scripts/ifcfg-eth0 Change IP address: Edit IPADDR= Line changes the subnet mask and gateway (optional): Edit NETMASK= and GATEWAY= Lines Restart the network service: sudo systemctl restart network verification IP address: ip addr

Common problems and solutions for Hadoop Distributed File System (HDFS) configuration under CentOS When building a HadoopHDFS cluster on CentOS, some common misconfigurations may lead to performance degradation, data loss and even the cluster cannot start. This article summarizes these common problems and their solutions to help you avoid these pitfalls and ensure the stability and efficient operation of your HDFS cluster. Rack-aware configuration error: Problem: Rack-aware information is not configured correctly, resulting in uneven distribution of data block replicas and increasing network load. Solution: Double check the rack-aware configuration in the hdfs-site.xml file and use hdfsdfsadmin-printTopo

Building a Hadoop Distributed File System (HDFS) on a CentOS system requires multiple steps. This article provides a brief configuration guide. 1. Prepare to install JDK in the early stage: Install JavaDevelopmentKit (JDK) on all nodes, and the version must be compatible with Hadoop. The installation package can be downloaded from the Oracle official website. Environment variable configuration: Edit /etc/profile file, set Java and Hadoop environment variables, so that the system can find the installation path of JDK and Hadoop. 2. Security configuration: SSH password-free login to generate SSH key: Use the ssh-keygen command on each node

The key to installing MySQL elegantly is to add the official MySQL repository. The specific steps are as follows: Download the MySQL official GPG key to prevent phishing attacks. Add MySQL repository file: rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm Update yum repository cache: yum update installation MySQL: yum install mysql-server startup MySQL service: systemctl start mysqld set up booting
