Tag Archive for Debian

Command Line Software Management

One of the nice things about a Debian-based Linux distribution is that it is easy to pull a piece of software onto your system from a repository using either apt-get or aptitude. Some may prefer to have a GUI but I find that the command line offers certain extra transparency that stops the “what’s it doing?” type of question. that’s never to say that the GUI-based approach hasn’t a place and I only go using it when seeking out a piece of software without knowing its aptitude-ready name. Interestingly, there are signs that Canonical may be playing with the idea of making Ubuntu’s Software Centre a full application management tool with updates and upgrades getting added to the current searching, installation and removal facilities. That well may be but it’s going to take a lot of effort to get me away from the command line altogether.

Fedora and openSUSE have their software management commands too in the shape of yum and zypper, respectively. The recent flurry of new operating system releases has had me experimenting with both of those distros on a real test machine. As might be expected, the usual battery of installation, removal and update activities are well served and I have been playing with software searching using yum too. What has yet to mature is in-situ distribution upgrading à la Ubuntu. In principle, it is possible but I got a black screen when I tried moving from openSUSE 11.1 to 11.2 within VirtualBox using instructions on the openSUSE website. Not wanting to wait, I reached for a Live CD instead and that worked a treat on both virtual and real machines. Being in an experiment turn of mind, I attempted the same to get from Fedora 11 to the beta release of its version 12. A spot of repository trouble got me using a Live CD in its place. You can perform an in-situ upgrade from a full Fedora DVD but the only option is system replacement when you have a Live CD. Once installation is out of the way, YAST can be ignored in favour of zypper and yum is good enough that Fedora’s GUI-using alternative can be ignored. It’s nice to see good transparent ideas taking hold elsewhere and may make migration between distros much easier too.

You always can install things yourself…

With Linux distributions offering you everything on a plate, there is a temptation to stick with what they offer rather than taking things into your own hands. For example, Debian’s infrequent stable releases and the fact that they don’t seem to change software versions throughout the lifetime of such a release means that things such as browser versions are fixed for the purposes of stability; Lenny has stuck with Firefox 3.06 and called it Iceweasel for some unknown reason. However, I soon got to grabbing a tarball for 3.5 and popped its contents into /opt where the self-contained package worked without a hitch. The same modus operandii was used to get in Eclipse PDT and that applied to Ubuntu too until buttons stopped working, forcing a jumping of ship to Netbeans. Of course, you could make a mess when veering away from what is in a distribution but that should be good enough reason not to get carried away with software additions. With the availability of DEB packages for things like Adobe Reader, RealPlayer, VirtualBox, Google Chrome and Opera, keeping things clean isn’t so hard. Your mileage may vary when it comes to how well things work out for you but I have only ever had the occasional problem anyway.

What reminded me of this was a recent irritation with the OpenOffice package included in Ubuntu 9.10 whereby spell checking wasn’t working. While there were thoughts about is situ fixes like additional dictionary installations, I ended up plumping for what could be called the lazy option: grabbing a tarball full of DEB packages from the OpenOffice website and extracting its contents into /tmp and, once the URE package was in place, installing from there using the command:

dpkg -i o*

To get application shortcuts added to the main menu, it was a matter of diving into the appropriate subfolder and installing from the GNOME desktop extension package. Of course, Ubuntu’s OpenOffice variant was removed as part of all this but, if you wanted to live a little more dangerously, the external installation goes into /opt so there shouldn’t be too much of a conflict anyway. In any case, the DIY route got me the spell checking in OpenOffice Writer that I needed so all was well and another Ubuntu rough edge eradicated from my life, for now anyway.

Rough?

Was it because Canonical and friends kept Ubuntu in such a decent state from 8.04 through to 9.04 that things went a little quiet in the blogosphere on the subject of the well-known Linux distribution? If so, 9.10 might be proving more of a talking point and you have to wonder if this is such a good thing with the appearance of Windows 7 on the scene. Looking on the bright side, 10.04 will be an LTS release so there is some chance that any rough edges that are on display now could be resolved by next April. Even so, it might have been better not to see anything so obvious at all.

In truth, Ubuntu always has had its gaps and I have seen a few of their ilk over the last two years. Of these, a few have triggered postings on here. In fact, issues with accessing the BBC iPlayer still bring a goodly number of folk to this website. That may just be a matter of grabbing RealPlayer, now helpfully available as a DEB package, from the requisite place on the web and ensuring that Ubuntu-Restricted-Extras is in place too but you have to know that in the first place. Even so, unexpected behaviours like Palimpsest seeing every partition on a disk as a different drive and SIL Raid mappings being seen for hard drives that used to live on the main home PC that bit the dust earlier this year; it only happens on one of the machines that I have running Ubuntu so it may be hardware thing and newly added hard drive uses none of the SIL mapping either. Perhaps more seriously (is it something that a new user should be encountering?), a misfiring variant of Brasero had me moving to K3b. Then UFRaw was sluggish in batch but that’s nothing that having a Debian VM won’t overcome. Rough edges like these do get you asking if 9.10 was ready for the big time while making you reluctant to recommend it to mainstream users like my brother.

The counterpoint to the above is that 9.10 includes a host of under the bonnet changes like the introduction of Ext4 hard drive formatting, Xsplash to allow the faster system loading to occur unseen and GNOME 2.28. To someone looking in from outside like me, that looks like a lot of work and might explain the ingress of the annoyances that I have seen. Add to that the fact that we are between Debian releases so things like the optimised packaging of ImageMagick or UFRaw may not be so high up the list of the things to do, especially with the more general speed optimisations that were put in place for 9.10. With 10.04 set to be an LTS release so I’d be hoping that consolidation is the order of the day over the next five or six months but it seems to be the inclusion of new features and other such progress that get magazine reviewers giving higher ratings (Linux Format has given it a mark of 9 out of 10). With the mooted inclusion of GNOME 3 and its dramatically different interface in 10.10, they should get their fill of that. However, I’d like to see some restraint for the take of a smooth transition from the familiar GNOME 2.x to the new. If GNOME 3 stays very like its alpha builds, then the question as how users will take to it arises. Of course, there’s some time yet before we see GNOME 3 and, having seen how the Ubuntu developers transformed GNOME 2.28, I wouldn’t be surprised if the impact of any change could be dulled.

In summary, my few weeks with Ubuntu 9.10 as my main OS have thrown up no major roadblocks that would cause me to look at moving elsewhere; Fedora would be tempting if that situation were to arise. The irritations that I have seen are more like signs of a lack of polish and remain peripheral to day-to-day working if you discount CD/DVD burning. To be honest, there always have been roughnesses in Ubuntu but has the lack of sizeable change spoilt us? Whatever about how things feel afterwards, big changes can mean new problems to resolve and inspire blog posts describing any solutions so it’s not all bad. If that’s what Canonical wants to see, they might get it and the year ahead looks as if it is going to be an interesting one after a recent quieter period.

A certain lack of speed

A little while, I encountered a problem with ImageMagick processing DNG files in Ubuntu 9.04. Not realising that I could solve me own problem by editing a file named delegates.xml, I took to getting a Debian VM to do the legwork for me. That’s where you’ll find all the commands used when helper software is used by ImageMagick to help it on its way. On its own, ImageMagick cannot deal with DNG files so the command line variant of UFRaw (itself a front end for DCRaw) is used to create a PNM file that ImageMagick can handle. The problem a few months back was that the command in delegates.xml wasn’t appropriate for a newer version of UFRaw and I got it into my head that things like this were hard-wired into ImageMagick. Now, I know better and admit my error.

With 9.1o, it seems that the command in delegates.xml has been corrected but another issue had raised its head. UFRaw 0.15, it seems, isn’t the speediest when it comes to creating PNM files and, while my raw file processing script works after a spot of modification to deal with changes in output from the identify command used, it takes far too long to run. GIMP also uses UFRaw so I wonder if the same problem has surfaced there too but it has been noticed by the Debian team and they have a package for version 0.16 of the software in their unstable branch that looks as if it has sorted the speed issue. However, I am seeing that 0.15 is in the testing branch so I’d be tempted to stick with Lenny (5.x) if any successor turns out to have slower DNG file handling with ImageMagick and UFRaw. In my estimation, 0.13 does what I need so why go for a newer release if it turns out ot be slower?

Adding msttcorefonts to Fedora

Once you have enabled the appropriate software repository, you can install the msttcorefonts (Microsoft truetype core fonts like Arial, Times Roman, Verdana, Georgia, etc.) package on Debian and Ubuntu. With Fedora, it surprisingly isn’t so straightforward. There is a recipe using the command line that worked for me and I’m not going to repeat it here so I’ll leave you to go where I found it. In fact, it forms part of a wider unofficial Fedora FAQ that may be of more interest you than solving this .

Update for Fedora 12 (2009-11-24):

You also need chkfontpath so the following needs doing before the final part of the command sequence, changing the filename as appropriate for your situation:

yum install xfs
rpm -ivh http://dl.atrpms.net/all/chkfontpath-1.10.1-2.fc12.i686.rpm

Making Nautilus work like it does in Ubuntu for another GNOME using distro

It’s a personal preference but I like the way that Nautilus (GNOME’s default file manager if you need to know) is set to work in Ubuntu by default. For some tastes, it might look too similar to Windows Explorer but having all the action happening in the same window is a convenience that users of other GNOME using distributions may not realise is there at all. By default, Debian and Fedora use what is called spatial mode with each double-clicking action on a folder icon firing up a new window. Personally, I think that clutters the desktop without good cause but it’s easy to change. All that’s needed is to go to Edit>Preferences in a Nautilus window, proceed to the Behaviour tab and toggle the Always open in browser windows tick box as shown below. Quite why this is not the default in all GNOME using distributions is beyond me but others may prefer what I dislike and Linux is all about choice, after all. Well, you can decide to use Gnome Commander instead and there are times when I do the same along with being a command line user too.

File Management Preferences

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