Here’s another one of those things that I discovered while being clumsy: in Firefox, click on your middle mouse button/wheel while hovering over a tab and it will close it; you don’t even need to click on the close icon. Evince, the PDF viewer favoured by Ubuntu, also makes use of the middle mouse button: for panning your way through documents using the hand tool. In a moment of lateral thinking, I tried the same trick with Adobe Reader and, in version 7.x, it works in the same way. On Windows at least, Adobe Reader 8.x is a different animal and features automatic scrolling, a very useful proposition for the reading of eBooks if the text doesn’t pass by you too quickly, and even a moderately reliable read aloud feature.
Archive for November, 2007
Choices, choices…
November 10, 2007
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Choice is a very good thing but too much of it can be confusing and the world of Linux is a one very full of decisions. The first of these centres around the distro to use when taking the plunge and there can be quite a lot to it. In fact, it is a little like buying your first SLR/DSLR or your first car: you only really know what you are doing after your first one. Putting it another way, you only how to get a house built after you have done.
With that in mind, it is probably best to play a little on the fringes of the Linux world before committing yourself. It used to be that you had two main choices for your dabbling:
- using a spare PC
- dual booting with Windows by either partitioning a hard drive or dedicating one for your Linux needs.
In these times, innovations such as Live CD distributions and virtualisation technology keep you away from such measures. In fact, I would suggest starting with the former and progressing to the latter for more detailed perusal; it’s always easy to wipe and restore virtual machines anyway and you can evaluate several distros at the same time if you have the hard drive space. It also a great way to decide which desktop environment you like. Otherwise, terms like KDE, GNOME, XFCE, etc. might not mean much.
The mention of desktop environments brings me to software choices because they do drive what software is available to you. For instance, the Outlook lookalike that is Evolution is more likely to appear where GNOME is installed than where you have KDE. The opposite applies to the music player Amarok. Nevertheless, you do find certain stalwarts making a regular appearance; Firefox, OpenOffice and the GIMP all fall into this category.
The nice thing about Linux is that distros more often than not contain all of the software that you are likely to need. However, that doesn’t mean that its all on the disk and that you have to select what you need during the installation. There might have been a time when it might have felt like that but my recent experience has been that a minimum installation is set in place that does all of the basics and you easily can add the extras later on an as needed basis. I have also found that online updates are a strong feature too.
Picking up what you need when you need it has major advantages, the big one being that Linux grows with you. You can add items like Apache, PHP and MySQL when you know what they are and why you need them. It’s a long way from picking applications of which you know very little at installation time and with the suspicion that any future installation might land you in dependency hell while performing compilation of application source code; the temptation to install everything that you saw was a strong one. The learn before you use approach favoured by the ways that things are done nowadays is an excellent one.
Even if life is easier in the Linux camp these days, there is no harm in sketching out your software needs. Any distribution should be able to fulfill most if not all of them. As it happened, the only third party application that I have needed to install on Ubuntu without recourse to Synaptic was VMware Workstation and that procedure thankfully turned out to be pretty painless.
A fallback installation routine?
November 9, 2007
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In a previous sustained spell of Linux meddling, the following installation routine was one that I encountered rather too often when RPM’s didn’t do what I required of them (having a SUSE distro in a world dominated by a Red Hat standard didn’t make things any easier…):
tar xzvf progname.tar.gz
cd progname
The first line extracts from a gziped tarball and the second one changes into the new directory created by the extraction. For bzipped files use:
tar xjvf progname.tar.bz2
The next three lines below configure, compile and install the package, running the command in its own shell.
./configure
make
su -c make install
Yes, the procedure is a bit convoluted but it would have been fine if it always worked. My experience was that the process was a far from foolproof one. For instance, an unsatisfied dependency is all that is needed to stop you in your tracks. Attempting to install a GNOME application on a KDE-based system is as good a way to encounter this result as any. Other horrid errors also played havoc with hopeful plans from time to time.
It shouldn’t surprise you to find that I will be staying away from the compilation/installation business with my main Ubuntu system. Synaptic Package Manager and its satisfactory dependency resolution fulfill my needs well and there is the Update Manager too; I’ll be leaving it to Canonical to do the testing and make the decisions regarding what is ready for my PC as they maintain their software repositories. My past tinkering often created a mess and I’ll be leaving that sort of experimentation for the safe confines of a virtual machine from now on…
Importing bookmarks into Firefox
November 8, 2007
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Moving from one operating system to another like I have means that a certain amount of migration is in order. I have already talked about migrating my email but there are lesser acts too. One of these is carrying across bookmarks into the new world. This should be an easy thing to achieve and, for the most part, it is. However, the Import… entry on the File menu of the main browser only brings in bookmarks from other applications. To get more flexibility, you need to open up the Bookmarks Manager window from the Bookmarks menu (Organise Bookmarks… is the entry that you need). The File menu of the Bookmarks Manager has entries named Import… and Export…; their functions should be very apparent. The former will read from a file, very useful if you do not want to disrupt what you already have. Another migration option is the potentially disruptive act of copying in an alternative bookmarks.html file into your Firefox profile folder and overwriting the one that’s already there.
The case of a wide open restriction
November 7, 2007
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The addition of IMAP capability to Gmail attracted a lot of attention in the blogosphere last week and I managed to flick the switch for the beast courtesy of the various instructions that were out there. However, when I pottered back to the settings, the IMAP settings had disappeared. A quick look at the Official Gmail Blog confirmed why: the feature wasn’t to be available to those who hadn’t set their language as US English. My setting of UK English explained why I wasn’t seeing it again, a strange observation given that they are merely variants of the same language; I have no idea why I saw it the first time around. My initial impression was that the language setting used was an operating system or browser one but this is not how it is. In fact, it is the language that you set for GMail itself in its settings; choosing US English was sufficient to make the IMAP settings reappear while choosing UK English made them disappear again. Personally, I am not sure why the distinction was made in the first place but I have Evolution merrily working away with Gmail’s IMAP interface without a bother. To get it going, I needed that imap.gmail.com needed an SSL connection while smtp.gmail.com needed a TLS one. After that, I was away and no port numbers needed to be supplied, unlike Outlook.
A matter of fonts…
November 6, 2007
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It’s when you pop from one operating system to another that you realise how operating system specific it is that fonts are. For instance, only one of the names in the following list are understood by Firefox on Ubuntu, the last one: Trebuchet MS, Lucida Grande, Verdana, Arial, Sans-Serif. The reason that San-Serif is understood is that it’s a general font class name in the world of CSS. However, that does not mean that you still are not at the mercy of operating system fonts. In fact, font sizes vary and 16px in one font isn’t the same as 16px in another; that can mean broken layouts if you are sufficiently clumsy.
As it happens, the main menu bar on my hillwalking blog should all fit on one line but it took up two lines when viewed on Linux. If it did that neatly, there wouldn’t be much of a problem but it didn’t. Some CSS hacking could have repaired the situation but I went for a simpler solution for now: picking a Linux sans serif font that fitted the bill better. So popping in mentions of "Nimbus Sans L" in appropriate places in my stylesheet was the way that I went. I don’t know how this appears in other Linux distributions but the wonders of virtualisation should allow to find out.
If I was really concerned about the fonts that were being used, I could have gone with a server-side approach: embedded fonts. I haven’t tried this for a while but differing browser support was a major issue when I did: you had to create a set of files for IE and for Netscape when I was investigating such things, hardly convenient even in those days when Opera was merely a speck on the horizon and Mozilla was nascent. It’s a valid approach for those exclusive fonts but so is questioning why you are using them in the first place. Adobe’s Flash is another option for those who obsess with fonts though how users take to this remains an open question, as does the accessibility of the approach.
I will be sticking with testing how things look in different operating systems and virtualisation is an excellent enabler of this, as are Live CD’s. The latter is particularly useful for Linux distributions which the former has application with more scenarios: names OpenSolaris and, with a spot of tinkering, OS X come to mind. It sounds like an intriguing proposition and Firefox is virtually a de facto cross-platform standard these days anyway. Mind you, seeing how websites are rendered by Safari running on OS X might be of interest to some.
Looking at from the user’s point of view rather than the web developer’s, there remains a question regarding the visiting of websites that break because of the font conundrum. If you find this happening to you a lot, it may be an idea to bring in some TrueType or OpenType fonts. With Ubuntu, this is straight forward: fire up Synaptic, search for msttcorefonts and install that package along with any of its dependencies. Logging off from and on to the system will make the new fonts available. There was a time when more work was needed than that…