CentOS: disable a non-reachable repository

Question

How to disable a non-reachable repository?

I have an error when I use yum repolist or yum list:

# yum list | grep 404
http://download.opensuse.org/repositories/home%3A/SannisDev/
CentOS_CentOS-    5/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.

And indeed the url is not reachable:

# ping opensuse.org
PING opensuse.org (130.57.5.70) 56(84) bytes of data.
From 10.2.15.2 icmp_seq=1 Destination Host Unreachable

But I can't find the repository in /etc/yum.conf:

# grep opensuse /etc/*

Answer 1

You need to search that host using -R option in grep.

grep -R opensuse  /etc/yum.repos.d/ | cut -d":" -f1

above command will print the exact matching files.

and you can comment that links on the fly using :

grep -R opensuse  /etc/yum.repos.d/ | cut -d":" -f1 | xargs -n1 sed -i.bkp "/opensuse/ s/^/#/"