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| #REDIRECT [[http://yum.baseurl.org/wiki/YumCodeSnippets]] | | #REDIRECT [http://yum.baseurl.org/wiki/YumCodeSnippets] |
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| == Yum Code Snippets ==
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| This is just snippets of code using the yum modules for common/simple tasks. Add/edit/comment as you'd like.
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| Open a local package as a yum package object w/o all the rest of the yum stuff:
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| <pre>
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| import yum.packages
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| import rpmUtils.transaction
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| ts = rpmUtils.transaction.initReadOnlyTransaction()
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| lp = yum.packages.YumLocalPackage(ts, '/home/skvidal/yum-3.2.8-1.noarch.rpm')
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| </pre>
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| replace '/home/skvidal/yum-3.2.8-1.noarch.rpm' with the full path to the package
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| Return the gpg signature info from a package:
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| <pre>
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| import yum.packages
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| import rpmUtils.transaction
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| from rpmUtils.miscutils import getSigInfo
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| ts = rpmUtils.transaction.initReadOnlyTransaction()
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| lp = yum.packages.YumLocalPackage(ts, '/home/skvidal/yum-3.2.8-1.noarch.rpm')
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| print getSigInfo(lp.hdr)
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| </pre>
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| Given a filename of an rpm parse out the major information that's available:
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| <pre>
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| from rpmUtils.miscutils import splitFilename
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| myfn = 'a2ps-4.13b-57.1.el5.src.rpm'
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| (name, ver, rel, epoch, arch) = splitFilename(myfn)
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| </pre>
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| Simplest transaction you can have (yum 3.2.7 and above):
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| <pre>
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| import yum
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| my = yum.YumBase()
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| my.install(name='somepackage')
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| my.remove(name='someotherpackage')
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| my.resolveDeps()
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| my.processTransaction()
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| </pre>
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| This helps you setup a repo at an arbitrary location, as a user and play with the object. Paste this into a file then run it with ipython for maximum usefulness like:
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| <code> ipython ./thisfile.py url://to/my/repo </code>
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| <pre>
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| import yum, os, sys
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| my = yum.YumBase()
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| my.conf.basecachedir = '/tmp/whereever'
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| if not os.path.exists(my.conf.basecachedir):
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| os.makedirs(my.conf.basecachedir)
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| my.conf.cache = 0
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| url = sys.argv[1]
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| my.repos.disableRepo('*')
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| newrepo = yum.yumRepo.YumRepository('myrepo')
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| newrepo.name = 'myrepo - %s' % url
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| newrepo.baseurl = [url]
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| newrepo.basecachedir = my.conf.basecachedir
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| newrepo.enablegroups = True
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| my.repos.add(newrepo)
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| my.repos.enableRepo(newrepo.id)
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| my.doRepoSetup(thisrepo=newrepo.id)
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| </pre>
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| Search for which package(s) own a file on the system
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| <pre>
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| import yum
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| my = yum.YumBase()
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| pkgs = my.rpmdb.whatProvides('/boot/vmlinuz-2.6.23.9-85.fc8', None, (None, None,None))
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| for pkg in pkgs:
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| print pkg
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| </pre>
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| more?
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