mjhjmtu

I know how to do it on Red Hat based systems.

 yum –disablerepo=* --enablerepo=epel update

The above command will temporarily disable all repos and enable epel and update only epel packages.

 yum update–disablerepo=remi-safe,updates

This will also disable two repos while updating all other enable repos.

What is the equivalent of the above on ubuntu for instance ?

I know we can comment out the repo in the /etc/apt/sources.list.d

But this will permanently disable the repo right?

Is there a way that I can run apt-get update while temporarily disable one repo for instance?

The easiest way I've found to manage repos is to have them in individual files in /etc/apt/sources.list.d/. That way, disabling the repo is as easy as moving the file from /etc/apt/sources.list.d/repo.list to /etc/apt/sources.list.d/repo.list.bak, and re-enabling the repo is as easy as going the other way. You could even create a script which temporarily disables a repo by moving the file, running update/install/whatever, and then moving the file back again.