I've recently started working as an IT person in a all Linux company, and noticed some of the tasks we do can be 'easily' automated. Today's task to automate is installing software and configuring /etc/apt/apt.config.d/50unattended-upgrades on new computers. I've already written the software-installing script, but now I'm stuck on uncommenting the desired unattended-upgrades lines.

I'll give you an example, this:

// Automatically upgrade packages from these (origin:archive) pairs

//

// Note that in Ubuntu security updates may pull in new dependencies

// from non-security sources (e.g. chromium). By allowing the release

// pocket these get automatically pulled in.

Unattended-Upgrade::Allowed-Origins {

        "${distro_id}:${distro_codename}";

        "${distro_id}:${distro_codename}-security";

        // 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.

        "${distro_id}ESMApps:${distro_codename}-apps-security";

        "${distro_id}ESM:${distro_codename}-infra-security";

//      "${distro_id}:${distro_codename}-updates";                             

//      "${distro_id}:${distro_codename}-proposed";

//      "${distro_id}:${distro_codename}-backports";

};

should look like this:

// Automatically upgrade packages from these (origin:archive) pairs

//

// Note that in Ubuntu security updates may pull in new dependencies

// from non-security sources (e.g. chromium). By allowing the release

// pocket these get automatically pulled in.

Unattended-Upgrade::Allowed-Origins {

        "${distro_id}:${distro_codename}";

        "${distro_id}:${distro_codename}-security";

        // 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.

        "${distro_id}ESMApps:${distro_codename}-apps-security";

        "${distro_id}ESM:${distro_codename}-infra-security";

        "${distro_id}:${distro_codename}-updates";                             

//      "${distro_id}:${distro_codename}-proposed";

//      "${distro_id}:${distro_codename}-backports";

};

(the updates line should be uncommented)

I've tried to do it with sed, but it just isn't working, probably because I'm a total n00b. Here is my clumsy sed line so someone can, hopefully, explain to me what I am doing wrong!

#!/bin/bash



    sudo sed -i 's@//      "${distro_id}:${distro_codename}-updates"@        "${distro_id}:${distro_codename}-updates"@' /etc/apt/apt.conf.d/50unattended-upgrades

Any help would be greatly apreciated! Have a nice day!