Guide to package management in Linux systems

As a representative of open source operating systems, the Linux system performs well in software package management, and a variety of package management tools also give users more choices. This article will introduce you to the software package management guide in Linux systems to help users better manage their own software packages.

1. Commonly used software package management tools

Commonly used software package management tools in Linux systems include dpkg, rpm, pacman, yum, etc.

• dpkg

dpkg is a commonly used package management tool in Debian Linux systems. It is responsible for installing, uninstalling, configuring and managing software packages in Debian systems.

• rpm

rpm (Red Hat Package Manager) is a package management tool for Red Hat Linux systems. It supports operations such as package installation, uninstallation, updates, and management of files contained in packages.

• pacman

pacman is a package management tool in the Arch Linux system. It has an operation method similar to apt-get and can be used to install, update, and uninstall software. Bag.

• yum

yum (Yellowdog Updater Modified) is a package management tool in Linux systems such as CentOS and Fedora. It can search, install and remove software packages on CentOS systems and handle their dependencies.

2. Installation and uninstallation of software packages

Installation and uninstallation of software packages is one of the most basic operations for daily use of software package management tools in Linux systems. Next, we will take the dpkg tool as an example:

• Install the software package

You can use the following command when installing a software package:

sudo dpkg -i file name.deb

sudo means running with administrator privileges, and dpkg -i means installing deb software package.

• Uninstall a software package

You can use the following command to uninstall an installed software package:

sudo dpkg -r package name

Among them, sudo means running with administrator privileges, and dpkg -r means deleting the software package. If you only delete the software package but keep its configuration file, use the following command:

sudo dpkg --remove package name

where sudo means running with administrator privileges and dpkg --remove means Do not delete the package's configuration files.

3. Update of software package

Update of software package is an important measure to maintain system stability and security. Software package management tools in Linux systems can make software package updates simple and automated. The following uses the yum tool as an example:

• Update software source

To update the software source, please use the following command:

sudo yum update

Sudo means running with administrator privileges, and yum update means updating all software packages and software sources on the system.

• Update a single software package

To update a single software package, use the following command:

sudo yum update package name

where sudo means running with administrator privileges, and yum update means updating the software package.

4. Querying of software packages

Not knowing the details of the software package is not conducive to determining which software package needs or does not need to be updated or installed. The software package management tool in Linux systems provides the most common method of querying software package information. The following uses the rpm tool as an example:

• Query installed software packages

To query installed software packages, please use the following command:

rpm -qa

Where rpm -qa means querying all installed software packages.

• Query the detailed information of the software package

To query the detailed information of the software package, use the following command:

rpm -qi package name

Where rpm -qi means querying the detailed information of the software package.

5. Dependencies of software packages

The dependencies between software packages in a Linux system are very complex. When a software package is installed, it may require a series of other software Package support. Package management tools can intelligently resolve dependencies and automatically install all necessary dependent packages. The following uses the pacman tool as an example:

• Search for dependencies

To search for dependencies of a software package, use the following command:

pacman - Si package name

where pacman - Si means querying the detailed information and dependencies of the software package.

• Find the dependencies of an installed package

To find the dependencies of an installed package, use the following command:

pacman -Qi package name

where pacman -Qi means to find the details and dependencies of the installed software package.

This article introduces the main software package management tools in Linux systems, as well as basic methods of installation, uninstallation, update, query and management of dependencies. When using a Linux system, mastering these guidelines can make package management easier and faster.

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