Installing Rpm On Centos With Yum Brands
Yum is the package management system that is used on CentOS Linux. It is responsible for managing packages and their dependencies from Yum repositories, as defined in /etc/yum.repos.d/ In this post, we’ll cover a few common and useful yum commands: 1. Install a yum package: yum install PACKAGENAME 2. Remove a yum package: yum remove PACKAGENAME 3.
Installing Rpm On Centos With Yum Brands Free
Hi Everyone,I have a fairly elementary question, however I can't seem to find an answer.I followed this article (url=to install PostgreSQL on Centos. The question I have is why is the 'yum install postgresql91-server' command used after the 'rpm -ivh pgdg-centos91-9.1-4.noarch.rpm' command. I thought the 'rpm -i' command achieved the same result as the 'yum install' command. What is the difference here between the 'rpm -i' and the 'yum install' commands?
Furthermore I thought the 'yum install' command could be used instead of the 'rpm -ivh' command. I would appreciate someone clarifying the difference between the 'rpm -i' and 'yum install' commands and what is actually occuring at each step to warrant using both (and why both are used in the article).Another question I'd like to ask is why does the article make mention to place the 'exclude=postgresql.'
statement in the CentOS-Base.repo yum configuration file?Appreciate your help.Thank you. Welcome to the CentOS fora. Please see the recommended reading for new users linked in my signature.quoteslenno02 wrote.Another question I'd like to ask is why does the article make mention to place the 'exclude=postgresql.'
statement in the CentOS-Base.repo yum configuration file?/quoteBecause they are replacing the CentOS core packages. That will avoid updates to CentOS packages from overwriting the 3rd party packages. This begs the question: Are you sure you need the capabilities of the replacement packages, as opposed to those supplied with the distro? Hi,Thank you very much for your replies and assistance.I feel I may be missing something here.
In an article I read it was stated 'For installing a software package, you use the rpm command with -i option (which stands for 'install'). For example, to install an RPM package called software-2.3.4.rpm:# rpm -i software-2.3.4.rpm'. Therefore, I assume, if I didn't use yum, I could install the PostgreSQL database using the command rpm -ivh pgdg-centos91-9.1-4.noarch.rpm. This would install the PostgreSQL database and I would not need to use yum. Is this assumption correct? If not, they why not?If the assumption is correct, then why in the installation instructions for PostgreSQL does the command rpm -ivh pgdg-centos91-9.1-4.noarch.rpm not install the database and the command yum install postgresql91-server actually installs the database?My problem is, to my mind, that on the one hand, rpm -i installs programs but on the other, so does yum install.
Why then, in the PostgreSQL installation instructions are both RPM -i and yum install used?Thanks and much appreciated. Reading the recommended links would lead you to url=Software/url and from there to Wiki articles on byum/b and brpm/b; however, the basic difference is that brpm/b is a lower level tool than byum/b and it cannot automatically resolve and install dependencies. The higher-level tool byum/b uses brpm/b under the hood, but uses the metadata from url=to resolve dependencies and automatically install them.The question of whether or not you bineed/i/b to replace core packages remains open. Hi Phil,Thanks for your response. I did read the articles from the links in your signature. They were very informative and useful thank you - great reading. However, I couldn't find an answer to my core question, which is why both rpm -i and yum install are used for the installation instructions when they essentially both install the software (with the exception of the dependencies management capabilities of yum).
As for whether I need to replace the core packages, I have absolutely no idea. I was just following the instructions provided to install PostgreSQL.
Does Centos 6.0 already have PostgreSQL installed?Thanks once again. quoteTrevorH wrote:quoteI couldn't find an answer to my core question, which is why both rpm -i and yum install are used for the installation instructions when they essentially both install the software/quoteI explained that in post #2./quoteGreat, thanks.
Yes I did see that post. Thank you very much for that.I guess my confusion stems from the fact that in my example above, the rpm -ivh command only installs the rpm in the yum repository. It actually doesn't install the application itself. Yum is then used to do that.
But in examples where, say, we actually install the yum software itself with rpm -Uvh yum-3.2.29-17.el6.centos.noarch.rpm, then this command wouldn't install in the yum repository but actually install the yum software. I hope my point is clear? In some cases I see examples where rpm -i installs the actual software and in other cases it see it just updating the yum repository. Please let me know if I am missing a fundamental point here?Thanks again.
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