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Interpretation of yum list results

asked 2015-02-09 06:56:25 -0500

qed gravatar image

updated 2015-02-09 15:51:39 -0500

mether gravatar image

I executed the following command in shell:

sudo yum list kernel-core
Loaded plugins: langpacks
Installed Packages
kernel-core.x86_64         3.17.4-301.fc21          @koji-override-0/$releasever
kernel-core.x86_64         3.18.5-201.fc21          @updates

The kernel-core.x86_64 part of version 3.17 is underlined.

Could anyone help me understand what this means? I have already updated all packages using sudo yum update and am wondering why I still have the earlier version of kernel-core.

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Oops, all of your posts got deleted when culling duplicates. Be careful about submitting a question multiple times.

randomuser gravatar imagerandomuser ( 2015-02-09 15:11:01 -0500 )edit

Two things. First, you don't need to use sudo if you're just querying with yum. Second, the older version is from koji and judging from the rest of the line, having koji active may prevent yum from installing the newer version from the updates repository.

sideburns gravatar imagesideburns ( 2015-02-09 18:41:40 -0500 )edit

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answered 2015-02-09 22:43:27 -0500

koji-override-0 indicates the stock, original kernel from the install media, the naming is a quirk of the release engineering process. There were newer kernels available in Fedora at the time the media was composed, so the selection of the kernel for the media was chosen by overrride.

The next kernel is an update. By default, you will have up to three kernels installed at once. You can only use them one at a time, but occasionally a regression will cause problems and you can fall back to an older one in the list for troubleshooting, or until the next release comes out. This is standard practice for linux distributions, as far as I know.

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Asked: 2015-02-09 06:56:25 -0500

Seen: 226 times

Last updated: Feb 09 '15