Hello,
I have tried to use yum in RHEL 6.2 but cannot make it work. For example, if I run "sudo yum install gimp" the result is
"Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
Updating certificate-based repositories.
http://linux.dropbox.com/fedora/6Wor...ta/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404"
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: Dropbox. Please verify its path and try again"

The files in yum.repos.d are as follows:
(a) dropbox.repo
[Dropbox]
name=Dropbox Repository
baseurl=http://linux.dropbox.com/fedora/$releasever/
gpgkey=http://linux.dropbox.com/fedora/rpm-public-key.asc

(b) redhat.repo
#
# Certificate-Based Repositories
# Managed by (rhsm) subscription-manager
#


(c) rhel-source.repo
[rhel-source]
name=Red Hat Enterprise Linux $releasever - $basearch - Source
baseurl=ftp://ftp.redhat.com/pub/redhat/linux/enterprise/$releasever/en/os/SRPMS/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

[rhel-source-beta]
name=Red Hat Enterprise Linux $releasever Beta - $basearch - Source
baseurl=ftp://ftp.redhat.com/pub/redhat/linux/beta/$releasever/en/os/SRPMS/
enabled=0
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-beta,file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

Please tell me how I can make yum work.

you're trying to get to a repository which doesn't exist. you've added a dropbox repo which is *very* clearly for fedora, on a rhel system. Did you actually take that failing url and check the path worked in a browser?

Look for yourself... http://linux.dropbox.com/fedora/

see the 6workstation directory doesn't exist, so will clearly not work.

sounds very likely that 1) you shouldn't be using that dropbox repo at all and 2) you shouldn't be using rhel at all... have you licensed it on RHN?

I notice that you have the Red Hat repositories set to
enabled=0
which should be
enabled=1
or they're switched off. Of course, if you didn't pay for Red Hat you can't use them anyway, as Chris pointed out. In that case, get CentOS.

You can get Dropbox for Red Hat or CentOS at RPMforge. Remember to set priorities, or their respository may damage your installation.
http://wiki.centos.org/AdditionalRes...ories/RPMForge
http://wiki.centos.org/PackageManagement/Yum/Priorities

mount /dev/dvd /media
cp -a /media/. /var/ftp/pub/
ls packages/ (packages are present in this directory instead of /Server like in RHEL 5)
cd /Packages
rpm -ivh createrepo-0.9............. (it will show some dependencies,so install the following packages first)
rpm -ivh deltarpm-3.5........ python-deltarpm..........
rpm -ivh createrepo-0.9.........
cd .. (/var/ftp/pub)
cp Server/repodata/8af........... .xml comps-rhel6-Server.xml (copy the .xml extension file in comps-rhel6-Server.xml)
createrepo -g comps-rhel6-Server.xml .
vi /etc/yum.conf (make a yum client)
service vsftpd restart
chkconfig vsftpd on
cd /etc/yum.repos.d/
rm *
reboot (optional)

dumps of commands with no context are really of very limited use. Especially as this really doesn't seem to address the users actual problem.