What Is YUM

Provides a quick introduction on YUM (Yellowdog Update Modified), which is a software package manager for RPM (RedHat Package Manager) based Linux distributions.

What Is YUM? - YUM (Yellowdog Update Modified) is a software package manager for RPM (RedHat Package Manager) based Linux distributions.

YUM is replaced by DNF (Dandified YUM) on CentOS 8 systems now. If run a "yum ..." command, it will be executed as "dnf ...".

For example, if you want the "make" tool package information, you can get the same result with both "dnf info make" and "yum info make" commands:

herong$ dnf info make
Available Packages
Name         : make
Epoch        : 1
Version      : 4.2.1
Release      : 9.el8
Architecture : x86_64
Size         : 498 k
Source       : make-4.2.1-9.el8.src.rpm
Repository   : BaseOS
Summary      : A GNU tool which simplifies the build process for users
URL          : http://www.gnu.org/software/make/
License      : GPLv3+
Description  : A GNU tool for controlling the generation of executables and other
             : non-source files of a program from the program's source files. Make
             : allows users to build and install packages without any significant
             : knowledge about the details of the build process. The details about
             : how the program should be built are provided for make in the program's
             : makefile.

herong$ yum info make
Available Packages
Name         : make
Epoch        : 1
Version      : 4.2.1
Release      : 9.el8
Architecture : x86_64
Size         : 498 k
Source       : make-4.2.1-9.el8.src.rpm
Repository   : BaseOS
Summary      : A GNU tool which simplifies the build process for users
URL          : http://www.gnu.org/software/make/
License      : GPLv3+
Description  : A GNU tool for controlling the generation of executables and other
             : non-source files of a program from the program's source files. Make
             : allows users to build and install packages without any significant
             : knowledge about the details of the build process. The details about
             : how the program should be built are provided for make in the program's
             : makefile.

So you should stop using YUM and get used to DNF. YUM will probably be removed in the next CentOS release.

Table of Contents

 About This Book

 Introduction to Linux Systems

 Cockpit - Web Portal for Administrator

 Process Management

 Files and Directories

 Users and Groups

 File Systems

 Block Devices and Partitions

 LVM (Logical Volume Manager)

 Installing CentOS

 SELinux - Security-Enhanced Linux

 Network Connection on CentOS

Software Package Manager on CentOS - DNF and YUM

 What Is DNF

 Manage DNF Package Repositories

What Is YUM

 What Is RPM

 What Is pkgs.org

 Install and Manage Java Packages on CentOS

 Install and Manage Perl Packages on CentOS

 Install "git-core" for GitHub Packages on CentOS

 Running Apache Web Server (httpd) on Linux Systems

 Running PHP Scripts on Linux Systems

 Running MySQL Database Server on Linux Systems

 Running Python Scripts on Linux Systems

 vsftpd - Very Secure FTP Daemon

 Postfix - Mail Transport Agent (MTA)

 Dovecot - IMAP and POP3 Server

 Email Client Tools - Mail User Agents (MUA)

 LDAP (Lightweight Directory Access Protocol)

 GCC - C/C++ Compiler

 Graphics Environments on Linux

 Conda - Environment and Package Manager

 Tools and Utilities

 Administrative Tasks

 References

 Full Version in PDF/EPUB