CentOS - Dec 2008 - New to Centos and have question about updating packages

I have been using Freebsd for along time. I have a client of mine that  
wants me to use Centos for his email server and web server. Anyway  
with Freebsd to update the packages file you use the following commands.
portsnap fetch fetches all the current port trees
portsnap update adds all the new ports to the tree on the server
portupgrade -arR will install all the ports that are installed on the  
server.
  Now my question is what are the commands for Centos to fetch ,update  
and install, all the packages installed on the server. I would like to  
use Yum. Any help would be great.

Thanks

Darrell Betts
betts at norden1.com
-----------------------------------------------------------
Looks like I Picked the Wrong Week to Stop Sniffing Glue.
-- Steve McCroskey --

Live ATC Feed from Toledo Express Airport http://audio.liveatc.net:8012/ktol.m3u

Darrell Betts wrote:
> I have been using Freebsd for along time. I have a client of mine that
> wants me to use Centos for his email server and web server. Anyway
> with Freebsd to update the packages file you use the following commands.
> portsnap fetch fetches all the current port trees
> portsnap update adds all the new ports to the tree on the server
> portupgrade -arR will install all the ports that are installed on the
> server.
>    Now my question is what are the commands for Centos to fetch ,update
> and install, all the packages installed on the server. I would like to
> use Yum. Any help would be great.
>
> Thanks
>
> Darrell Betts
> betts at norden1.com
> -----------------------------------------------------------
> Looks like I Picked the Wrong Week to Stop Sniffing Glue.
> -- Steve McCroskey --
>
> Live ATC Feed from Toledo Express Airport
http://audio.liveatc.net:8012/ktol.m3u
>
>
>
>
> _______________________________________________
> CentOS mailing list
> CentOS at centos.org
> http://lists.centos.org/mailman/listinfo/centos
simply "yum update", this compares your packages with the package
server
(repo) and downloads and updates all packages to the latest version

On Sun, Dec 7, 2008 at 12:17 PM, Darrell Betts <betts at norden1.com>
wrote:
> I have been using Freebsd for along time. I have a client of mine that
> wants me to use Centos for his email server and web server. Anyway
> with Freebsd to update the packages file you use the following commands.
> portsnap fetch fetches all the current port trees
> portsnap update adds all the new ports to the tree on the server
> portupgrade -arR will install all the ports that are installed on the
> server.
>  Now my question is what are the commands for Centos to fetch ,update
> and install, all the packages installed on the server. I would like to
> use Yum. Any help would be great.
"yum update" will do it for you. Normally, you will not need to reboot
after updating, unless you update the kernel or several other packages
that require a reboot.

>  Now my question is what are the commands for Centos to fetch ,update
> and install, all the packages installed on the server. I would like to
> use Yum. Any help would be great.
Welcome Darrell.  Here is the summary version:

To install a specific package, such as postfix from a repository that 
you are configured to get packages from use:

yum install postfix

To update to the newest version of postfix that is in your configured 
repositories use:

yum update postfix

To update everything in repositories that are configured on your machine 
use:

yum update

If you are moving between point releases (CentOS 5.1 to CentOS 5.2) use:

yum upgrade

Hope this helps.

Barry

Darrell Betts a ?crit :
>   Now my question is what are the commands for Centos to fetch ,update  
> and install, all the packages installed on the server. I would like to  
> use Yum. Any help would be great.
> 
I wrote an abstract on basic Yum usage. It's in French, but it's not 
hard to guess what the command line bits mean:

http://www.microlinux.fr/article.php3?id_article=40

Knowing how to handle RPM can also come in quite useful sometimes:

http://www.microlinux.fr/article.php3?id_article=39

Cheers,

Niki Kovacs

Darrell Betts  wrote:
>   Now my question is what are the commands for Centos to
> fetch ,update  
> and install, all the packages installed on the server. I
> would like to  
> use Yum. Any help would be great.
> 
Try "yum --help" and "man yum" which have a lot of info.
Also the
CentOS docs on http://www.centos.org/docs/ has yum docs.

So if you for just install CentOS 4.7 from the ServerCD and do

# yum check-update

it will give you a list of packages to be updated, which you can
do by

# yum update

and then say yes or no. Welcome to CentOS BTW.

Regards,
Vandaman.