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| Line 9: |
Line 9: |
| </pre> | | </pre> |
| to list the name of the rpm package. | | to list the name of the rpm package. |
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| ==Advantages of using package manager==
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|
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| Few advantages of use of package manager over installation using sources are:
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| *You can find out which files are associated with a given package.
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| *:<pre>
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| *::rpm -ql <package name>
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| *:</pre>
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| *For a given file, you can find out which package it's associated with.
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| *:<pre>
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| *::rpm -qf <file-path>
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| *:</pre>
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| *You can remove all files associated with a given package, even if they're spread out over multiple directories.
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| *:<pre>
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| *::rpm -e <package-name>
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| *:</pre>
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| *You can know which packages are dependent on a given package
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| *:<pre>
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| *:: rpm -qR <package-name> #OR
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| *:: yum deplist <package-name>
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| *:</pre>
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| *You can know which packages a given package depends on
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| *:<pre>
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| *:: yum remove <package-name> (Can cancel with N)
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| *:</pre>
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| *Cryptographic security ensuring package is untampered
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| *:Handled by yum automatically. Keys are installed in /etc/pki/rpm-gpg folder. Installation works only if package is properly signed
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| *Upgrading of packages does not overwrites modified configuration files
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| *:Results into .rpmnew or .rpmsave files
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| *Packages installed by package managers can be updated using package managers easily
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| *:<pre>
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| *::yum -y update
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| *:</pre>
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| *Package managers ensure that one package does not overwrites file created by another package
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| *:Results into conflicts
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|
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| ==References==
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| References for understanding and learning rpm and yum properly:
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| *Information on restoring original files if package was installed via RPM is at https://www.g-loaded.eu/2012/03/26/restore-original-configuration-files-from-rpm-packages/
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| *Detailed information on RPM and yum is available at https://www.ibm.com/developerworks/linux/library/l-lpic1-v3-102-5/?ca=drs-
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| *RPM uses a fairly complex logic while upgrading a package to decide fate of configuration files. The logic is described in detail at http://www.rpm.org/max-rpm/ch-rpm-upgrade.html
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<yambe:breadcrumb>Package_management_tools|Package management tools</yambe:breadcrumb>
rpm
Finding which package installed given file
Many times we require to know the name of the page which installed a given file. In such cases one can use:
rpm -qf <full-path-of-file>
to list the name of the rpm package.
