- How to use yum command on CentOS/RHEL
- Fix yum errors
- Recover an interrupted yum package installation
Show installed packages
yum list installed
Show installed packages from epel
yum list installed | grep @epel
Show active repositories
What provides a certain file
Which package does a file belong to?
rpm -qf /bin/bash
Which packages depend on a package
what files depend on package??
repoquery --requires --resolve <package>
Show dependencies for a package
yum deplist <packagename>
Installed package x.y.z (from anaconda) not available
Package not found on mirror
yum check-update -q
Check security updates
HAHA GOTCHA! no security metadata on CentOS! There is for EPEL though. see https://access.redhat.com/solutions/10021 On CentOS 6 first install
yum install yum-plugin-security
yum list-security -q --errorlevel=0
Which repository is a package from?
yum clean all
yum clean all --enablerepo='*'
List files from package
rom -ql packagename dnf repoquery -l somepackage
Updateinfo file is not valid XML
Warning: RPMDB altered outside of yum.
Happens when you install something using rpm, what usually works is:
yum history sync
Not using downloaded remi/repomd.xml because it is older than what we have
yum clean all
yum-config-manager --disable reponame
Public key for *.rpm is not installed
Some stuff to try:
rpm --checksig -v /var/cache/yum/<channel-name>/packages/device-mapper-multipath-0.4.7-34.el5.x86_64.rpm rm -rfv /var/cache/yum/* yum clean all