Chapter 14

INSTALLING AND UPDATING SOFTWARE PACKAGES

Redhat spesific commands:

# register a system to a Red Hat account:
subscription-manager register --username=yourusername --password=yourpassword

# view available subscriptions:
subscription-manager list --available | less

# view available subscriptions:
subscription-manager attach --auto # or
subscription-manager attach --pool=PoolID

# view consumed subscription:
subscription-manager list --consumed

# unregister a systems:
subscription-manager unregister

RPM queries:

rpm [option] [filename]
-q     Display the version of NAME installed on the system
-qa    List all RPM packages currently installed
-qf    Find out what package provides FILENAME
-qi    Display detailed information about a package
-ql    List all files included in a package
-qc    List configuration files included in a package
-qd    List documentation files included in a package
-qp    Get info about downloaded package
-q --scripts
-q --changelog

# to install .rpm package:
rpm -ivh wonderwidgets-1.0-4.x86_64.rpm
-i     Install packages
-v     Verbose
-h     Print hash

# to extract package without installing:
rpm2cpio wonderwidgets-1.0-4.x86_64.rpm | cpio -idv

# to list files in package:
rpm2cpio rhcsa-script-1.0.0-1.noarch.rpm | cpio -tv

# to extract only files with .txt extension:
rpm2cpio wonderwidgets-1.0-4.x86_64.rpm | cpio -id "*txt"

yum

yum list 'http*'
yum search all 'web server'
yum info httpd
yum provides /var/www/html
yum install httpd
sudo yum update
sudo yum remove httpd

yum list kernel
yum update kernel

yum group list
yum group info "RPM Development Tools"
sudo yum group install "RPM Development Tools"

# reviewing logs:
tail -5 /var/log/dnf.rpm.log
sudo yum history
sudo yum history undo 5

enabling redhat software repositories

yum repolist all
yum-config-manager --enable rhel-8-server-debug-rpms
yum-config-manager --add-repo="http://dl.fedoraproject.org/pub/epel/8/x86_64/"
rpm --import http://dl.fedoraproject.org/pub/epel/RPM-GPG-KEY-EPEL-8
yum install http://dl.fedoraproject.org/pub/epel/8/x86_64/e/epel-release-8-2.noarch.rpm
cat /etc/yum.repos.d/epel.repo

# --no-gpg-check option can be used to bypass the gpg check.

MANAGING PACKAGE MODULE STREAMS

yum module list
yum module list perl
yum module info perl
yum module info --profile perl:5.24
yum module install perl -y
yum module remove perl -y
yum module disable perl
yum module install perl:5.24
yum distro-sync