Chapter2 - rpm and yum

Commands to be aware of:

yum

• yum list [all|installed|available|updates] [regex]
  
• yum info pkgname
• yum provides filename (lists the rpms that contain that file. 'yum provides filename | grep installed -B3' is more useful)
• yum install pkgname | yum localinstall pkgname.rpm | yum groupinstall group
• yum search

createrepo

• createrepo -v /dir
  
• createrepo -v --update /dir
• Creates the following files in /dir/repodata/
  • repomd.xml - md5 checksum of other files. client cache is updated when this file changes
  • primary.xml.gz - list of all rpms, and files provided by rpms
  • filelists.xml.gz - list of all files provided by rpms, used by 'yum provides'
  • other.xml.gz - other meta info of packages

rpm

• install-upgrade-remove
  
• rpm -ivh pkg.rpm: installs. -v verbose, -h prints hash progress bar
• rpm -Uvh pkg.rpm: upgrades pkg.rpm if it exists, installs if it doesn't exist
• rpm -Fvh pkg.rpm: upgrades pkg.rpm if it exists, skips if it doesn't exist
• rpm -i --replacepkgs: install same package again
• rpm -i --oldpackage: downgrade package
• rpm -e pkg: removes pkg

• query
  
• rpm -qa: list all packages
• rpm -ql pkg: list all files of installed pkg
• rpm -qc pkg: list all config files of installed pkg
• rpm -qd pkg: list all doc files of installed pkg
• rpm -qi pkg: pkg info
  
• rpm -qf filename: name the package that installed this file
• rpm -q --changelog pkg: print changelog
• rpm -q --scripts pkg: print pre and post scripts
• rpm -qa --last: print installation time
  
• rpm -qap pkg.rpm: list all files of pkg.rpm
• rpm -qcp | -qdp pkg.rpm

• verify
• rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
  
• rpm -V pkg: verifies package (of any modifications to its files)
• rpm -Va : verify all pkg
• rpm -Vp pkg.rpm
  
• rpm --checksig pkg.rpm