Ubuntu Tweak

Installing Ubuntu Tweak on Ubuntu 13.10 or any other supported version of Ubuntu gives you a simple utility that makes it very easy to customize different aspects of the Ubuntu desktop.

This short tutorial shows how to install it (in Ubuntu 13.10) and use it to modify many desktop options.

Installation will be from the author’s Personal package Archives (PPA), which means all the steps will have to be accomplished from the command line. So start a shell terminal and lets begin. New users: Type “term” (minus the quotes) in the Ubuntu Dash search bar. The first item that you see in the result is the terminal.

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Once it’s launched, type sudo add-apt-repository ppa:tualatrix/ppa. Follow that with sudo apt-get update to update the package database. Then install Ubuntu Tweak using sudo apt-get install ubuntu-tweak.

You may now start it from the Dash by searching for tweak. It should be the first item that shows up.
Ubuntu Tweak

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This screen shot shows the application’s main interface. Tweak away!
Ubuntu Tweak Ubuntu 13.10 Saucy Salamander

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5 Responses

  1. Nice tip, though you may want to specify:

    The server needs to not be behind a NAT/router, or the remote MDA will not accept it : your box will introduce itself with “EHLO methisyou” but the MDA’s reverse lookup will detect you are “actually” “public.ip.number” (your public IP)

    Do you know of a simple setup that solves this reverse-lookup barrier – either by causing the sendmail MTA to declare itself as necessary, or by using another MTA that can still be used in bash scripts…? 🙂

    1. I hope you realize that a real domain was removed from that code block. The only real issue you have to worry about is if the receiving end starts marking your emails as spam. I’ve never had that happen, but that’s the kind of problem that SPF, DKIM and OpenDMARC are designed to solve.

      1. I know that if this fictional methisyou.net is considered public in this example – however I was wondering if there was an easy way to allow this to work in the general use case (id est, NAT notwithstanding) with the standard sendmail

        I am referring specifically to a use case of the server you are managing/monitoring being behind a NAT which is trying to directly access the MDA of something like a gmail.com mail address. In such a setup, managed-server tries to connect to (say Google’s) MDA saying “EHLO managed-server” ; Google then traces back your IP with DNS reverse lookup to find that you’re showing as some 39.40.41.42 which does not resolve to “managed-server” and rejects the message altogether…

        1. No, I’ve not considered that particular use case, but if your server is sitting behind a router and the router’s public IP is also your server’s, wouldn’t the process of establishing an RDNS record follow the standard process of setting up such a record?

          Also, isn’t RDNS just one reason why emails coming from a particular box/domain might be rejected? If the RDNS test fails, but the emails are signed using DKIM, there’s a very strong chance that the receiving server will not mark them as spam. That makes it look/sound as if RDNS and protocols like DKIM are totally, completely different things, but in reality, doesn’t DKIM accomplish the same thing as RDNS?

          For the record, I’ve been forwarding these emails to a GMail, Yahoo, Vivaldi.net and Fastmail accounts without ever establishing an RDNS record or even using SPF or DKIM and they’ve always been accepted. The only time Google’s SMTP server rejected my emails was when the From address was not a real email address.

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