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28 Posted Topics
 | [INDENT]"[B][I]I often say that when you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meagre and unsatisfactory kind; it may be the beginning …  |
 | The boundary region should be approximately the locus of points 1/4 the circumference of Earth away from the perpendicular point. These should be half-way from the opposite-point-on-Earth in any direction. So, you need a Great Circle distance calculation in reverse. Unit vector at perpendicular point = ((sin lat)(cos long), (sin … |
| | [INDENT][B][I]"So you might ask, "How can that file possibly hold that program?" Well, it can't. It only contains packaging information which your distribution uses to download the actual program binary."[/I][/B][/INDENT] Not usually... Most packages only contain part of the programme, like the main programme and its menus. The rest comes … |
| | "[B][I]thanx can u tell from where i'll get drivers for ubuntu. i m having dell studio xps 1340.if u can give me a link. [/I][/B]" Unlike that other OS, many drivers are distributed with the GNU/Linux kernel. Also, GNU/Linux tends to use "generic" drivers, that is drivers that will run … |
| | If you want to log everyone out and kill all their apps ( I am a teacher. I have delusions of omnipotence... ;-) ), use /etc/init.d/gdm restart or stop. That stops all the login sessions to the GUI which accomplishes a lot. I sometimes set that up in a crontab …  |
| | [QUOTE=sadotmd;1337833]Gentoo or minimal Debian should work PS: OpenBSD will also work fine[/QUOTE] There is a trick to installing the least in Debian GNU/Linux. The default installation is usually a desktop plus basic configuration. Uncheck both. Then you get a quick installation with only a few hundred megabytes. That is pretty … |
| | Can you list directories with ls -l or du? These will show space used. If you can find a large file you do not need, you can free up space. Most file systems will have space reserved for "root". If you have used that up you may have to boot … |
| | This spring, I showed my students a brand new powerful PC running XP with rights to "7". Their response was "It's so slow!!!". They were used to GNU/Linux on an 8 year old terminal server accessed from 7 year old PCs as thin clients. Logins takes 5s for my students. … |
 | Nonsense! GNU/Linux is cross-platform and alive and well on the desktop. Where I work 90% of PCs are running GNU/Linux. Users like it because it is fast, doesn't need a lot of re-re-reboots and I like it because it is easy to maintain. By next year we will only have … |
 | A generation in hardware time is three years for some. The only life M$ is having is in business LAN servers because their OS is so messed up they need to sell more products to manage it and in consumer big box stores that sell only M$'s OS to uninformed … |
| | There are many choices for downloads. One option I like is to do installation over the network. That way, you only need to download the files you need installed instead of everything on a CD. I like Debian GNU/Linux for that. You can download a minimal installation CD of about … |
| | GNU/Linux is growing in a massive way without imitating that other OS. It sells well on price and reliability. see [URL="http://www.google.com/trends?q=ylmf+os%2Clinux&ctab=0&geo=cn&geor=all&date=mtd&sort=1"]http://www.google.com/trends?q=ylmf+os%2Clinux&ctab=0&geo=cn&geor=all&date=mtd&sort=1[/URL] comparing Linux to yimfos shows Linux is still a bigger hit but who knows how China will go? They have made big moves into netbooks as first PCs with … |
| | When you run from CLI, are you typing the command in the file or ./StopApache.sh? It could be that your permissions are wrong on the file. chmod u+x StopApache.sh should give your file execute permission for the owner. This is a desktop icon problem, quite appropriate here, IMHO. The same … |
| | To avoid confusion and to make it easier, you can put all directories in one partition. There are reasons of efficiency/security in operation for various partitioning strategies but none are essential for a newbie. The .iso files are the data files containing the disc image. The .iso is short for … |
| | The first step is hashing, using the data/keys as array addresses. The second step just reduces the sparseness by gathering the items. see [URL="http://en.wikipedia.org/wiki/Hash_function"]Hash Function[/URL] You calcualate the hash keys numerically from the data and store it according to the keys. To find something, calculate its key and retreive it … |
 | Re: Dani's Cookbook This thread is getting long. I thought it would be useful to create a database for such things as recipes and found some valuable resources: [LIST=1] [*][URL="http://www.wedesoft.demon.co.uk/anymeal-api/"]Anymeal [/URL]application from Debian GNU/Linux repository, and [*][URL="http://thehoseys.com/recipes.html"]Tons of MealMaster recipes[/URL] from the web [/LIST] With this, instead of a handful of recipes for … |
| | I spend a lot of time reading, writing, thinking and doing IT at home and work. Lately, I am teaching at a remote northern community which has a neglected system. They were running with a wide-open router and no anti-malware. I have set up a new router and a server …  |
| | In the old days SWAG (Software Archive Group) was active and their collection is still out there. see [url]http://www.bsdg.org/swag/MATH/0080.PAS.html[/url] That unit has a routine for inversion but I note that it does not check for division by zero or do pivotting to optimize the result but it may be useful … |
 | There are many algorithms for division. Among them: [LIST] [*][URL="http://www.trottermath.net/simpleops/russmult.html"]Russian Peasant Algorithm[/URL] done backwards by [URL="http://www-history.mcs.st-and.ac.uk/history/HistTopics/Egyptian_papyri.html"]shifting and subtracting[/URL] [*]Logarithms log(x/y) = log x - log y [*][URL="http://en.wikipedia.org/wiki/Discrete_Fourier_transform#Multiplication_of_large_integers"]Fourier Transform[/URL] [*]Factorization [*][URL="http://en.wikipedia.org/wiki/Division_(digital)#Newton.E2.80.93Raphson_division"]Guess and Check[/URL] - This was used on the old IBM 1620 which descended from the Cadet (Can't Add, Doesn't Even … |
| | If you are working on data of more than a bit, which Cin implies, then you need Cout to be the Cin of the next higher bits. If you add bit a to bit b with Cin and c being the bit resulting, c= a xor b xor Cin Cout … |
| | Assembler will really slow down your development process. It takes much longer to write most programmes in assembler than a higher-level language. If you know C-whatever, code in that language. Computer languages are best kept simple so a simple programme can process them: 0)Create a syntax 1)Check syntax or the … |
| | These days, most of the complexity/functionality of a computer is in integrated circuits so I vote for solid-state physics, semiconductors, optics, atoms, particle physics, diffusion, vacuum technology and lots of applied maths. I can remember buying a bunch of 16 kilobit dynamic ram chips in 16-pin and CPUs in 40-pin … |
| | Yes. Go SFLC! The authours of the software get to restrict how/if/by whom/when the software may be copied. They opted for a Free Software licence and the users/modifiers/distributors of that software must respect that. To some that seems like a severe restriction but it does not have to be. Applications … |
 | What's not right about the installation? Will it not boot? Assuming it will not boot, the likely suspects are mounting of the / filesystem or the bootloader. Help us out and give some symptoms. What do you see on the screen? Any messages you could share? If you upgraded instead … |
| | [QUOTE=Masardinas;1084027]Hello I am trying to install Ubuntu 9.10 Desktop on Raid 0 install fails @ 90 something % can not install GRub error [/QUOTE] Grub is a bootloader which loads the kernel into memory to execute. Grub does not do RAID 0. The solution is simple. Put a small partition … |
| | Since this post started RedHat started pushing systems that can manage 10K thin client desktops. Novell and IBM are doing the same. GNU/Linux is mainstream on business desktops now. These guys are distributing desktop GNU/Linux because their customers want it. see http://www.redhat.com/rhel/desktop/ see http://www-03.ibm.com/press/us/en/pressrelease/28649.wss see http://www.novell.com/solutions/enterprise-linux-desktops/ 2009 was the year … |
| | It's about time. Heaven and Bill Gates only know what backdoors and security holes are in that other OS. Government has no business using stuff they cannot trust. FLOSS is trustworthy because you can examine it, one of the four freedoms of free software. A government would not hire an … |
| | Don't forget thin clients. They can be used for bloated VDI or good old X/NX/VNC/RDP etc. The same advantages seen with virtual servers can be found with thin clients and the desktop. Instead of bloat, there can be a single image to maintain. Instead of thousands of PCs idling, we … |
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