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| + | ===== Useful command list ===== | ||
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| **To install a package (i=install v=verbose h=show hash marks):** | **To install a package (i=install v=verbose h=show hash marks):** | ||
| rpm -ivh package.rpm | rpm -ivh package.rpm | ||
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| **To see what package owns a file:** | **To see what package owns a file:** | ||
| rpm -qf filename | rpm -qf filename | ||
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| + | example: | ||
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| + | # rpm -qf / | ||
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| + | alternative with yum | ||
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| + | # yum search deallocvt | ||
| + | | ||
| + | No Matches found | ||
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| + | This is where yum's whatprovides (provides works in recent yum versions) command works really well: | ||
| + | |||
| + | # yum whatprovides */deallocvt | ||
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| **To rebuild the RPM database:** | **To rebuild the RPM database:** | ||
| rpm --rebuilddb | rpm --rebuilddb | ||
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| **Mass uninstall of packages that match a pattern:** | **Mass uninstall of packages that match a pattern:** | ||
| rpm -qa | grep pattern | xargs rpm -e | rpm -qa | grep pattern | xargs rpm -e | ||
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| + | **How to extract contents of an RPM package** | ||
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| + | As the name implies, rpm2cpio takes an RPM package file and converts it to a cpio archive. The -i flag to the cpio command indicates that cpio is reading in the archive to extract files, and the -d flag tells cpio to construct directories as necessary. The -v flag tells cpio to list file names as files are extracted, and the -m flag tells cpio to retain previous file modification times when creating files. | ||
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| + | ===== Building a dummy/empty RPM ===== | ||
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| + | To create such a fake RPM file, first ensure that you have the rpm-build package installed. Then, save this text somewhere as | ||
| + | '' | ||
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| + | | ||
| + | Name: dummy-tomcat | ||
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| + | This meta-package fools other packages to think you have tomcat5 installed | ||
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| + | Now, run the command: **rpmbuild -bb dummy.spec** | ||
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| + | It will create a dummy-1.0-1.noarch.rpm which when installed, will | ||
| + | provide tomcat5 (assuming your software looks at the provides list | ||
| + | rather than the name list). | ||
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