Howto install manage packages rhel8

rpm

perform an rpm query to list all packages installed:

rpm -qa

list what version of the package is currently installed:

rpm -q yum

find out what package provides filename:

rpm -qf /etc/yum.repos.d

get detailed information about the package:

rpm -qi  yum

list the files installed by the package:

rpm -ql yum

list just the configuration files installed by the package:

rpm -qc openssh-clients

list just the configuration files installed by the package:

rpm -qd openssh-clients

list shell scripts that run before or after the package is installed or removed:

rpm -q --scripts

list change information for the package:

rpm -q --changelog audit

list documentation on rpm archive:

rpm -q -p application.rpm -d

list configuration files on rpm archive:

rpm -q -p application.rpm -c

list archives on rpm archive:

rpm -q -p application.rpm -l

list rpm archive scripts:

rpm -q -p application.rpm --scripts

list rpm archive changelog:

rpm -q -p application.rpm --changelog

list total space consume by rpm archive after install:

rpm -q -p application.rpm -i

installing rpm from internet:

rpm -ivh https://dl.fedoraproject.org/pub/epel/8/Everything/x86_64/Packages/e/epel-release-8-8.el8.noarch.rpm

Dnf

install package:

dnf install httpd-manual -y

download rpm package without installing:

dnf download httpd

perform local rpm installation:

dnf install httpd-2.4.6-45.el7.centos.x86_64.rpm

remove installed package:

dnf remove httpd -y

check for available updates:

dnf check-update

list groups available:

dnf grouplist

obtain info about group:

dnf groupinfo "Server with GUI"

install group of application:

dnf groupinstall "Server with GUI"

update all packages on system:

dnf update -y

install security updates:

dnf updateinfo list sec

search for an application:

dnf seach httpd

list packages available to install:

dnf list 

list packages installed:

dnf list installed

use grep to find an specific package:

dnf list |grep samba

list package dependencies:

dnf deplist httpd

list how many package you have installed:

dnf list installed | wc -l

list how many package are available to install:

dnf list available | wc -l

show package info:

dnf info httpd

view dnf transaction history:

dnf history

view dnf specific transaction history using id:

dnf history info 10

undo specific transaction from history using id:

dnf history undo 10 -y 

you can redo the history transaction using id:

dnf history redo 10 -y 

view dnf log:

tail /var/log/dnf.log

list packages update available:

dnf list updates

clean yum cache:

dnf clean packages

clean all yum cache:

dnf clean all

build dnf cache:

dnf makecache

find which package provides specific file:

dnf whatprovides /usr/lib/libstdc++.so.6

you can skip yum command updates on command line itself using following syntax:

dnf --exclude=package* update
dnf --exclude=php* update
dnf --exclude=kernel* update