Yum is an automatic updater and package installer/remover for rpm systems. It automatically computes dependencies and figures out what things should occur to install packages.
Yum makes it easier to maintain groups of machines without having to manually update each one using rpm.
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Here are some key features of "Yum":
· Multiple Repositories
· Simple config file
· Correct dependency calculation
· Fast operation
· rpm-consistent behavior
· comps.xml group support, including multiple repository groups
· Simple interface
What's New in This Release: [ read full changelog ]
User Interface changes:
· Searching will now search repo. pkgtags.
· Add a special $uuid variable to yumvars, can be used in baseurl/etc. to track machines.
· Change disk space needed message.
· Fix output of "zero sized" packages in listTransaction().
· A few minor tweaks to repolist command, main: Now outputs number of excluded packages.
· Sort skip-broken debug output.
· Add skip_if_unavailable option to repos. configuration.
· Make the "Requires missing" dep. failure text easier to read, and more informative.
· Cross arch. downgrades now work.
· If we are just doing installs, show the disk space used (nice for sizing chroot's etc.)
· Add --rpmverbosity option.
· Add "last" prefix argument to history undo/redo. Eg. "yum history redo last-1"
· Show last transaction, even if it's incomplete, when using "yum history info".
· Change history DB to only be readable by root, by default.
· Add check command.
· Add version nogroups sub-command.
· Add "clean rpmdb" sub-command.
· Process --showduplicates for obsoletes (Eg. list obsoletes).
· Show which variable is wrong when we error out of config. parsing.
· Print txmbr's as e:v-r instead of weird e-v-r.
· Drop status, when just listing disabled/enabled repos. in repolist.
· List all obsoleted pkgs. for an obsoleting pkg.
· Show releasever in "yum list" if it's not the same as current.
· Don't output usage() for bad command errors.
· Allow local*/install/downgrade/etc. to use http/ftp/https URLs (like rpm -U).
· Add long variants for all options.
· Wrap "License" field in info command.
· Add --releasever.
· Only match non-locale group names if current locale matching failed.
· Fix i18n in history.
· yum-metadata-parser is now only conditionally in run_with_package_names.
· Show script/error output in history.
Significant bugfixes:
· Scriptlet output is now setup correctly again, so history can now store it.
· Fix problems with packages that have checksum_type but no checksum_data, in history.
· Work around rpm-4.8.* API change (rpm transaction problems).
· Cross arch. downgrades now work.
· Use a tempfile for rpm transaction output.
· Fix "install foo" in multilib_policy=all when there are different versions of foo in different arches.
· Fix epoch matching in rpmdb.returnPackages() Aka. "yum list installed"
· Fix rpmdb.simpleVersion() using gpg-pubkey packages.
Resource improvement changes:
· Do reget on repo. metadata files, possible due to use of unique filenames.
· Speedup a few functions, most noticeable of which is "yum list", via. utf8_ucp_width()
· Speedup "small dep. solving, due to caching file requires and conflicts.
· Speedup rpmdb pattern matching.
· Add code to make "large" dep. solving faster, but turned off (waiting for indexes to be created by y-m-p).
· Minor speedup to dep. solving for checkInstall/checkRemove().
· Minor speedup in dep. solving for allowedMultipleInstalls().
· Add patches for using PackageSack?() in tsInfo.
API changes:
· searchGenerator() now always uses the pkgtags searching as well.
· Add the pkgtags API.
· setCacheDir() now sets .conf.cachedir.
· Add a fast option to pkg.verify().
· Add a special $uuid variable to yumvars.
· Hack the changelog data to fix the sorting problem.
· Add force argument to deselectGroup().
· Allow setting values for update notices, add add_notice().
· Update pgp module, from upstream.
· Add rpmdb.check_*() APIs.
· Add rpmdb.return_running_packages()
· Add transactionCacheFileRequires() and fileRequiresData().
· Add transactionResultVersion() and transactionCacheConflictPackages().
· Add futureRpmDBVersion().
· Never use MD5 for repomd/metalink/etc. checking, even though it was just an extra check.
· Change rpmdb.simpleVersion() to possibly return a cached value, and thus. return a string.
· Add .ui_from_repo to packages.
· Add .ui_nevra to packages.
· Add .ui_envra to packages.
· Add YumUrlPackage?()
· Add "re_remote_url()" for testing if a url is "remote".
· Add get_running_kernel_version_pkgtup().
· Only match non-locale group names if current locale matching failed.
· Add returnFileEntries(primary_only=True).
· Warn/Deprecate simpleFiles().
· Add "base package name installed" compare providers check.
· Add .base_package_name to packages.
· yum-metadata-parser is now only conditionally in run_with_package_names.
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