How do you use apt-get to only install critical security updates on ubuntu?
We'd like to only upgrade packages that need to be upgraded for security reasons, without upgrading all other packages.
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I read the apt-get man page carefully when I got tired of manually editing the sources.list every time I wanted to only apply security updates (that means the second time).
Figured this solution out:
sudo cp /etc/apt/sources.list /etc/apt/security.sources.list
Edit the latter to contain only security repositories, then:
sudo apt-get upgrade -o Dir::Etc::SourceList=/etc/apt/security.sources.list
Tadaaaa... Scriptable stuff.
If you are just looking to do this quickly once, instead of creating a separate repository and scripting up some automation and all that. Great if you aren't supposed to be making changes while auditing a system or whatever.
These two commands will spit out the list. Pipe to wc -l to see how many are behind. ;-)
grep security /etc/apt/sources.list > /tmp/security.list sudo apt-get upgrade -oDir::Etc::Sourcelist=/tmp/security.list -s
Still valid for older distros or if you have update repos off, but security on:
sudo apt-get upgrade -s| grep ^Inst |grep Security
I don't know if it will work, but apt has it's sources in /etc/apt/sources.list and/or /etc/sources.list.d/
Why not edit the file, and comment all lines that are not part of the security updates ?
The security lines for apt should be something like this:
deb http://security.ubuntu.com/ubuntu ..... ..... ...
Leave those lines alone and comment all the others.