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SOFTWARE PACKAGE INSTALLATION

Software Packages Management:-

It is the process of installation, updating, configuration, and removal of software packages with package management tools in the Linux OS.

In CentOS, Fedora, Alma Linux, RHEL Linux we can use RPM and YUM tools used to install, update and remove any software.

To maintain a reliable and consistent system yum tool we can use to automate installation and updation of RPM packages with the help of centralized repositories. Repositories are centralized online store with updated RPM packages.

RPM (Redhat Package Manager):
Used by Redhat based distributions.

YUM (Yellowdog Updater):
Used by Redhat based distributions like RHEL, CentOS, Fedora and Alma Linux.

DNF (Dandified YUM):
The next-generation package manager replacing YUM in new Linux versions.

APT (Advanced Package Tool):
Used by Debian-based distributions like Ubuntu, Kali Linux, Parrot Linux and Linux Mint.

RPM PACKAGE MANAGEMENT USING RPM COMMANDS:-

Query package is installed or not

#rpm –q package_name
#rpm –q zip
Zip-3.0.10.el7.x86_64

Query all packages in system 


#rpm –qa |more

Remove the installed package 


#rpm –e package_name
#rpm –e zsh
#rpm –e zsh --nodeps
#rpm –q zsh To confirm removal

Mount and access DVD in Linux 


                                    
#mount /dev/sr0 /media
VERIFY USING
#mount

Install RPM package using rpm command 


#rpm <option> <package_name.rpm>
-i Install
-v Verbose information
-h Show progress using hashes
#rpm –ivh zsh-5.0.2-34.el7_82.x86_64.rpm

Install RPM package forcefully


#rpm –ivh vsftpd-3.0.2-11.el7_2.x86_64.rpm --force

Query info of any package 


 #rpm –qi package_name

Install RPM from remote system 


#rpm –ivh ftp://192.168.1.14/pub/zshxxxx.rpm

Remove any package 


#rpm -e package_name
#rpm -e vsftpd

RPM PACKAGE MANAGEMENT USING YUM COMMANDS :-

CENTOS 7 YUM REPOSITORY CONFIGURATION
1)Backup existing CentOS-Base.repo

#cp /etc/yum.repos.d/CentOS-Base.repo /root
2) Download new updated Repository File at original location

#sudo curl -fsSL
https://raw.githubusercontent.com/AtlasGondal/centos7-eol-repo-
fix/main/CentOS-Base.repo -o /etc/yum.repos.d/CentOS-Base.repo
3) Clear the YUM cache to ensure it fetches the latest repository metadata

#sudo yum clean all
#sudo yum makecache
4) Now update your system with YUM 

#sudo yum update

Search package using yum 


#yum search nmap

Install package using yum

Remove package using yum 


#yum remove package_name
#yum remove nmap

Update using yum

List packages in repository 


#yum list package_name
#yum list samba*

List installed packages in system 


#yum list installed package_name

Update package 


#yum update package_name
#yum update httpd

List package groups in Linux 


#yum search nmap

Install Package group 


#yum groupinstall “Basic Web Server”

Remove Package group 


#yum groupremove “Basic Web Server”
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