I wonder what


is in the 50unattended-upgrades file. It was enabled by default for me (after enabeling unattended-upgrades package at least.) Right now I disabled it and only have -security enabled for automatic upgrades but I would like to understand what it is and whether it would be good to uncomment that line again.

Here is the block it's in;

Unattended-Upgrade::Allowed-Origins {  //   
         // Extended Security Maintenance; doesn't necessarily exist for  
         // every release and this system may not have it installed, but if  
         // available, the policy for updates is such that unattended-upgrades  
         // should also install from here by default.       
 // "${distro_id}ESM:${distro_codename}";    
// "${distro_id}:${distro_codename}-updates";     
// "${distro_id}:${distro_codename}-proposed";     
// "${distro_id}:${distro_codename}-backports";   

Is it some sort of mother that should be enabled before I can enable the -updates, -proposed, -backports?

Thanks a lot.


It's Canonical's Extended Security Maintenance for LTS releases after normal release end-of-life. At the moment, unless you're using 12.04 and paying for it, it doesn't apply to you.

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