Linux Updates

In Windows, there is a way to select the updates that you need to download and install. I would like to know the equivalent of that in Linux (Centos)

Thank you
jskfanAsked:
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Chris WongCommented:
yum commands are typically run as yum <command> <package name/s>. By default, yum will automatically attempt to check all configured repositories to resolve all package dependencies during an installation/upgrade.

http://www.centos.org/docs/5/html/5.1/Deployment_Guide/s1-yum-useful-commands.html
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rindiCommented:
I'm using Fedora with the KDE desktop, and CentOS uses the same base (although an older version).

In KDE apper runs in the background, which checks for updates, and if there are any available, you get notified about them with an icon in the taskbar. When you then open that icon, you get a list of all the updates that would be installed if you click on the "install" button. But you can also deselect those you don't want.

If you are using a different desktop, there is probably a similar tool running where you can do the same deselection...

If you aren't using a GUI, then you'll have to do this manually via yum, where you can select what you don't want to update, but that needs manual work and reading through the yum manual... For example you could edit the yum.conf file and add an "exclude" expression, and there put those packages you don't want to update:

http://www.cyberciti.biz/faq/redhat-centos-linux-yum-update-exclude-packages/

But I don't recommend excluding any updates, as only a fully patched system is as secure as possible.
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farzanjCommented:
If you have GUI installed, you can use system-config-packages.

Without GUI you will have to use yum manually.
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jskfanAuthor Commented:
farzanj

where do you get a GUI tool.
I have used TEM Bigfix, It enabled to select the updates to install for windows servers. I am wondering if there is a free GUI tool that can do the same for Linux Centos servers.
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rindiCommented:
It depends what you have already installed. Are you already using a GUI, or are you accessing it just via terminal? If a GUI is already installed, then you probably have a utility installed that handles the updates, like apper which i mentioned above in the case of kde.

If you haven't already installed a GUI, then it makes absolutely no sense at all to install a GUI just for that. Just edit the file I mentioned. But again, it also doesn't make any sense to risk the security of your system by not installing all updates. CentOS is a stable OS based on Redhat, that means also the updates are tested and secure.
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jskfanAuthor Commented:
If you are talking about Centos GUI, yes, I am using the GUI, though I can open up Terminal window through the GUI.

with Microsoft Windows, some Applications do not run well or crash if you install all MS Updates that come up each month.  I used to select and install just some Operating System related updates.
I thought that may be the same  case in Linux too.
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rindiCommented:
No, it is not an m$ product, so you can trust the updates. Usually even the so-called "unstable" linux distros are still more stable than windoze when it comes to updates.

The update tool you have in your GUI should have the option where you can unselect those updates you don't want.
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jskfanAuthor Commented:
<<The update tool you have in your GUI should have the option where you can unselect those updates you don't want. >>

Where in CentOs you can run the Updates GUI tool ?
thanks
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rindiCommented:
I use fedora with KDE, and there it is in the taskbar. If you are also using KDE in CentOS, it would also be there. With gnome I don't know, but i think the tools used are similar.
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jskfanAuthor Commented:
thanks
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