Installing Firefox Developer Edition in Linux Mint

Having moved beyond the slow response and larger memory footprint of Firefox ESR, I am using Firefox Developer Edition in its place even if it means living without a status bar at the bottom of the window. Hopefully, someone will create an equivalent of the old add-on bar extensions that worked before the release of Firefox Quantum.

Firefox Developer Edition may be pre-release software with some extras for web developers like being able to to drill into an HTML element and see its properties but I am finding it stable enough for everyday use. It is speedy too, which helps, and it has its own profile so it can co-exist on the same machine as regular releases of Firefox like its ESR and Quantum variants.

Installation takes a little added effort though and there are various options available. My chosen method involved Ubuntu Make. Installing this involves setting up a new PPA as the first step and the following commands added the software to my system:

sudo add-apt-repository ppa:ubuntu-desktop/ubuntu-make
sudo apt-get update
sudo apt-get install ubuntu-make

With the above completed, it was simple to install Firefox Developer edition using the following command:

umake web firefox-dev

Where things got a bit more complicated was getting entries added to the Cinnamon Menu and Docky. The former was sorted using the cinnamon-menu-editor command but the latter needed some tinkering with my firefox-developer.desktop file found in .local/share/applications/ within my user area to get the right icon shown. Discovering this took me into .gconf/apps/docky-2/Docky/Interface/DockPreferences/%gconf.xml where I found the location of the firefox-developer.desktop that needed changing. Once this was completed, there was nothing else to do from the operating system side.

Within Firefox itself, I opted to turn off warnings about password logins on non-https websites by going to about:config using the address bar, then looking for security.insecure_field_warning.contextual.enabled and changing its value from True to False. Some may decry this but there are some local websites on my machine that need attention at times. Otherwise, Firefox is installed with user access so I can update it as if it were a Windows or MacOS application and that is useful given that there are frequent new releases. All is going as I want it so far.

A look at Google’s Pixel C

Since my last thoughts on trips away without a laptop, I have come by Google’s Pixel C. It is a 10″ tablet so it may not raise hackles on an aircraft like the 12.9″ screen of the large Apple iPad Pro might. The one that I have tried comes with 64 GB of storage space and its companion keyboard cover (there is a folio version). Together, they can be bought for £448, a saving of £150 on the full price.

Google Pixel C

The Pixel C keyboard cover uses strong magnets to hold the tablet onto it and that does mean some extra effort when changing between the various modes. These include covering the tablet screen as well as piggy backing onto it with the screen side showing or attached in such a way that allows typing. The latter usefully allows you to vary the screen angle as you see fit instead of having to stick with whatever is selected for you by a manufacturer. Unlike the physical connection offered by an iPad Pro, Bluetooth is the means offered by the Pixel C and it works just as well from my experiences so far. Because of the smaller size, it feels a little cramped in comparison with a full size keyboard or even that with a 12.9″ iPad Pro. They also are of the scrabble variety though they work well otherwise.

The tablet itself is impressively fast compared to a HTC One A9 phone or even a Google Nexus 9 and that became very clear when it came to installing or updating apps. The speed is just as well since an upgrade to Android 7 (Nougat) was needed on the one that I tried. You can turn on adaptive brightness too, which is a bonus. Audio quality is nowhere near as good as a 12.9″ iPad Pro but that of the screen easily is good enough for assessing photos stored on a WD My Passport Wireless portable hard drive using the WD My Cloud app.

All in all, it may offer that bit more flexibility for overseas trips compared to the bigger iPad Pro so I am tempted to bring one with me instead. The possibility of seeing newly captured photos in slideshow mode is a big selling point since it does functions well for tasks like writing emails or blog posts, like this one since it started life on there. Otherwise, this is a well made device.

Restoring GRUB for dual booting of Linux and Windows

Once you end up with Windows overwriting your master boot record (MBR), you have lost the ability to use GRUB. Therefore, it would be handy to get it back if you want to start up Linux again. Though the loss of GRUB from the MBR was a deliberate act of mine, I knew that I’d have to restore GRUB to get Linux working again.So, I have been addressing the situation with a Live DVD for the likes of Ubuntu or Linux Mint. Once one of those had loaded its copy of the distribution, issuing the following command in a terminal session gets things back again:

sudo grub-install --root-directory=/media/0d104aff-ec8c-44c8-b811-92b993823444 /dev/sda

When there were error messages, I tried this one to see if I could get more information:

sudo grub-install --root-directory=/media/0d104aff-ec8c-44c8-b811-92b993823444 /dev/sda --recheck

Also, it is possible to mount a partition on the boot drive and use that in the command to restore GRUB. Here is the required combination:

sudo mount /dev/sda1 /mnt
sudo grub-install --root-directory=/mnt /dev/sda

Either of these will get GRUB working without a hitch and they are far more snappy than downloading Boot-Repair and using that; I was doing that for a while until a feature on triple booting appeared in an issue of Linux User & Developer that reminded me of the more readily available option. Once, there was a need to manually add an entry for Windows 7 to the GRUB menu too and, with that instated, I was able to dual-boot Ubuntu and Windows using GRUB to select which one was to start for me. Since then, I have been able to dual boot Linux Mint and Windows 8.1 with GRUB finding the latter all by itself so your experiences too may show this variation so it’s worth bearing in mind.

A first look at SAS University Edition

My first introduction to SAS came near the start of my post-university career over a decade ago. It was six weeks of classroom training and hands-on case studies that got me going with SAS 6.12. The included SAS products naturally included the components of Base SAS for data processing (data step, PROC SQL) and reporting as well as SAS/Graph. All of that was enough for a placement with one of my then employer’s clients with the added advantage of becoming one of the client’s own employees at the end of it. During that stay, more SAS versions followed until the launch of 9.1.3. Eventually, I moved onto pastures new and I remain a SAS user with 9.3 being the most recent version that I have met at work while SAS University Edition is bringing me towards 9.4.

SAS Learning Edition

Though it is possible to extend one’s knowledge on the job, that can be harder to manage during the working day when times are busy. Before SAS University Edition, we had SAS Learning Edition and I took delivery of a copy while it was available. It included SAS Enterprise Guide 4.1 together with a limited version of SAS 9 that a few limitations. Firstly it only would process up to 1500 records in any dataset but that was not such a problem for learning. Support from SAS was limited too even if the package had a price that I seem to remember was around £100 but my memory is hazy about this. What you need to remember is that SAS licenses are vastly more expensive than this so you got that for which you have paid. If you did have a Base SAS installation, Learning Edition would co-exist with it and versions like 8.2 and 9.1.3 Service Pack 4 were compatible so long as you had them pre-installed. There was a warning that re-installation of software might be required if either SAS Learning Edition or Base SAS is removed inappropriately.

Speaking of licenses, Learning Edition was time limited with its own version 2.0 (based on Enterprise Guide 2.0 and, if I recall correctly, SAS 8.2) and version 4.1 purchased prior to September 10, 2007 expiring on December 31, 2008. The expiry date for version 4.1 after the aforementioned purchase deadline was December 31, 2011. More conventionally, it was for single PC installation only and that PC had to run either Windows 2000 or Windows XP Professional. The process was one that would be more than familiar to anyone who ever installed software on a machine running Windows. Even with those older operating systems, it needed 1,080 MB of hard disk space. It reminds me of a time when 10 GB of hard drive capacity was generous but that had moved beyond 160 GB around ten years ago. The RAM requirements also fitted the time with 256 MB being the bare minimum and 512 MB being recommended.

Usefully, the whole package came with a copy of The Little SAS Book and, not having it next to me while writing these words, I cannot recall whether whether it was the version for Enterprise Guide or the Primer edition. Though I may not have made as much use of the software as I could have done, it certainly came in useful for trying a few things and I found a way to start up the more traditional SAS DMS interface as well as Enterprise Guide.

SAS University Edition

Apart for being made available free of charge, SAS University Edition is very different from its predecessor, SAS Learning Edition. After all, things have moved along since the last decade and SAS has its SAS Analytics U (for University, I presume) community now and that may explain the name though there is a wider focus on established university teaching too. Even long term SAS users like me can be called learners too so we get allowed in as well.

Firstly, it works in a very different way since you no longer are installing SAS software like you would with Microsoft Office or Adobe Photoshop. To work, it needs you to have one of Oracle VirtualBox (4.3.12 is preferred at the time of writing), VMware Player or VMware Fusion because what you are getting is a virtual machine. For those unfamiliar with such things, SAS has Quick Start guides for each:


VMware Player

VMware Fusion

The available VM’s are built around Linux in that 64-bit Red Hat Enterprise Linux is installed in there with SAS running as a service on top of it. In fact, the virtual runs solely as a server with just a screen informing you of the IP address that you need to load in your web browser of choice. That reveals another break with the past with SAS Studio being used in place of Enterprise Guide or the SAS DMS. While all the processing happens within the virtual machine, it is possible to store files on your own host operating system’s file system using by setting up a shared folder called myfolders that points to where you want it and that SAS Studio can use.

The use of virtualisation to roll out a local SAS server that makes SAS Studio available is neat and means that you do not need to run Microsoft Windows on a PC as was the case with SAS Learning Edition. Mac OS X and Linux are possibilities and I use the latter at home so this is a very good thing. Furthermore, there are installation guide for each supported operating system:




The version of SAS that you get is 9.4 and it is licensed until the middle of June 2015 with a 45 day grace period taking you as far as the end of July. Along with Base SAS, you also get SAS/STAT, SAS/IML, SAS/Secure 168-bit, SAS/ACCESS Interface to PC Files, SAS/ACCESS Interface to ODBC, SAS/IML Studio, SAS Workspace Server for Local Access, SAS Workspace Server for Enterprise Access and High Performance Suite. SAS/Graph is absent but new statistical graphics procedures like SGPLOT and SGPANEL are there so graph creation possibilities should be covered anyway.

All in all, SAS University Edition looks a snazzy arrangement and I plan to explore what is offered. SAS Studio is a new to me but there are enough recognisable features to help me settle in with it and it would merit an entry of its own on here. In fact, SAS has some video tutorials on their YouTube channel that show off some of its capabilities and the new tool certainly carries over from both Enterprise Guide and the more traditional DMS interface.

Speaking of blogging, SAS has an entry on one of the theirs that it has called Free SAS Software for students!, which is another introduction to SAS University Edition. Other (non-blog) articles include Get Started With SAS® University Edition along with a useful FAQ.

ERROR: Can’t find the archive-keyring

When I recently did my usual system update for the stable version Ubuntu GNOME, there were some updates pertaining to apt and the process failed when I executed the following command:

sudo apt-get upgrade

Usefully, some messages were issued and here’s a flavour:

Setting up apt ( …
ERROR: Can’t find the archive-keyring
Is the ubuntu-keyring package installed?
dpkg: error processing apt (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)

Some searching on the web revealed that the problem was that there were no files in /usr/share/keyring when there should have been and I had not removed them myself so I have no idea how they disappeared. Various remedies were tried and any that needed software installed were non-starters because apt was disabled by the lack of keyring files. The workaround that restored things for me was to take a copy of the files in /usr/share/keyring from an Ubuntu GNOME 14.04 installation in a VirtualBox VM and copy them in to the same location in its Ubuntu GNOME 13.10 host. For those without such resources, I have packaged them in a zip file below. Other remedies like Y PPA also were suggested where I was reading but that software package needed installing beforehand so it was little use to me when the likes of Synaptic were disabled. If there are other remedies that do not involve an operating system re-installation, I would like to know about them too as well as possible causes for the file loss in the first place and how to avoid these.

Ubuntu Keyrings