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  • passing a font as an argument to a script

    - by josinalvo
    I am trying to use osdSH for notifications. It has a 'font' parameter that receives a curiously formed string. From the man: -f -font Set font (Default: -*-lucidatypewriter- bold-*-*-*-*-240-*-*-*-*-*-*) The manual does not comment on the arguments passed (I assume each * represents a possible argument). It would seem that this notation is (or has someday been) standard, but I've not been able to find anything about it. what is the standard ? what argument specifies letter size ?

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  • How to create a user with root privileges in bash?

    - by George Edison
    I have run the following commands: sudo groupadd -r testgroup sudo useradd -g testgroup -M -r testuser Notice the -r option, which according to the man page: -r     Create a system account. Assuming I have a user account with root privileges, I then run: sudo -u testuser cat /dev/input/mouse0 However, I get: cat: /dev/input/mouse0: Permission denied Running the same command as root provides the expected output (garbled output from the mouse driver). How can I create a user with root privileges?

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  • Understanding how OpenGL blending works

    - by yuumei
    I am attempting to understand how OpenGL (ES) blending works. I am finding it difficult to understand the documentation and how the results of glBlendFunc and glBlendEquation effect the final pixel that is written. Do the source and destination out of glBlendFunc get added together with GL_FUNC_ADD by default? This seems wrong because "basic" blending of GL_ONE, GL_ONE would output 2,2,2,2 then (Source giving 1,1,1,1 and dest giving 1,1,1,1). I have written the following pseudo-code, what have I got wrong? struct colour { float r, g, b, a; }; colour blend_factor( GLenum factor, colour source, colour destination, colour blend_colour ) { colour colour_factor; float i = min( source.a, 1 - destination.a ); // From http://www.khronos.org/opengles/sdk/docs/man/xhtml/glBlendFunc.xml switch( factor ) { case GL_ZERO: colour_factor = { 0, 0, 0, 0 }; break; case GL_ONE: colour_factor = { 1, 1, 1, 1 }; break; case GL_SRC_COLOR: colour_factor = source; break; case GL_ONE_MINUS_SRC_COLOR: colour_factor = { 1 - source.r, 1 - source.g, 1 - source.b, 1 - source.a }; break; // ... } return colour_factor; } colour blend( colour & source, colour destination, GLenum source_factor, // from glBlendFunc GLenum destination_factor, // from glBlendFunc colour blend_colour, // from glBlendColor GLenum blend_equation // from glBlendEquation ) { colour source_colour = blend_factor( source_factor, source, destination, blend_colour ); colour destination_colour = blend_factor( destination_factor, source, destination, blend_colour ); colour output; // From http://www.khronos.org/opengles/sdk/docs/man/xhtml/glBlendEquation.xml switch( blend_equation ) { case GL_FUNC_ADD: output = add( source_colour, destination_colour ); case GL_FUNC_SUBTRACT: output = sub( source_colour, destination_colour ); case GL_FUNC_REVERSE_SUBTRACT: output = sub( destination_colour, source_colour ); } return output; } void do_pixel() { colour final_colour; // Blending if( enable_blending ) { final_colour = blend( current_colour_output, framebuffer[ pixel ], ... ); } else { final_colour = current_colour_output; } } Thanks!

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  • Making a design for a Problem [closed]

    - by Vaibhav Agarwal
    I have written many codes using OOPS and I am still to understand when is a code good enough to be accepted by experts. The thought procedure of every man is different and so is the design. My question is should I do something in particular to design my programs in such a way that they are good enough to be accepted by people. Other thing I have also read Head First Object Oriented Design but at last I feel that the way they design the problems is much different I would have designed them.

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  • Connection Strings, an Overview

    We asked Phil to come up with a simple explanation of connection strings. We somehow weren't expecting a 'quote of the day' for your database, or a C# application to gather data from the internet. However, sometimes the oblique approach is the best, especially when the knowledge comes from hard-won experience by a cynical man.

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  • Spotlight on Words

    Linguists will tell you that there is no way to measure the importance of words to the development of man. Whether this is an exaggeration or an understatement, it is clear that everyday life would halt instantly without the use of words. Even the people of Dallas, who know how to communicate much without the use of words, would not be able to do anything without speaking with each other.

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  • What is SEO?

    SEO stands for "search engine optimization" and it's probably the most critical tool that you have in order to drive traffic to your website. You could have the most creative, innovative, and technologically advanced website known to man, but if you don't fully understand SEO, no one will ever find you.

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  • How to use update-java-alternatives with a local installation of the JDK?

    - by user827992
    I have Ubuntu 12.04 amd64 installed on my machine, on the previous versions of Ubuntu it was deadly easy, now there is this command update-java-alternatives with a really bad man page. I just have my JDK unpacked on a mounted partition like /media/mydisk/jdk, how i can force the use of that JDK instead of the one that comes in the Ubuntu repository? What is the logic behind this update-java-alternatives ?

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  • Preserve permission switch not working with cp?

    - by Ankit
    Copying file from other user's directory with '-p' switch should reserve the permission as per the man page. I am copying /etc/passwd to my home directory with -p switch but the permissions aren't preserved as follows:- ijoin@stream:~$ ls -l /etc/passwd -rw-r--r-- 1 root root 1813 Sep 25 08:58 /etc/passwd ijoin@stream:~$ cp --preserve /etc/passwd . ijoin@stream:~$ ls -l passwd -rw-r--r-- 1 ijoin ijoin 1813 Sep 25 08:58 passwd I am doing something wrong?

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  • Configure xfce4-screenshooter settings

    - by rubo77
    xfce4-screenshooter is the standard screenshot program in XFCE on Xubuntu. How can I configure the settings about which format it saves the screenshot in and in which folder? I noticed, that my settings I made in shutter also affect the settings of xfce4-screenshooter (but not all). EDIT: The man page sais, there is an -o option to open it with an external program. How can I make this default? Then I could set there an external program, that automatically compresses the screenshot to an emailable size

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  • Ubuntu Philosophy Question

    - by The-Ever-Kid
    I was just switching from Windows to Ubuntu and I started to read this. And there were quite a few things I did not understand one was : "OpenOffice decided not to have a learning curve" And "Firefox tries very hard to make sure pages written in 1995 look like they did in 1995. " And Finally "Windows isn't a poor man's Linux." In the final statement shouldn't the statement be the opposite.

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  • VPN vs. SSH Tunnel: Which Is More Secure?

    - by Chris Hoffman
    VPNs and SSH tunnels can both securely “tunnel” network traffic over an encrypted connection. They’re similar in some ways, but different in others – if you’re trying to decide which to use, it helps to understand how each works. An SSH tunnel is often referred to as a “poor man’s VPN” because it can provide some of the same features as a VPN without the more complicated server setup process – however, it has some limitations. How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8 How to Banish Duplicate Photos with VisiPic

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  • How to profile a Perl + FastCGi + StarRunner web program?

    - by Paul Tomblin
    I've written an extension to RequestTracker for a client, but he says the performance isn't good enough. I'd like to do some profiling, but I'm not sure how to connect up a profiler (say NYTProf, for example)? I tried what the man page says and put PerlModule Devel::NYTProf::Apache in my apache config, but all I get in the results are Apache2:XSLoader, Devel::NYTProf::Apache and ModPerl::Util modules in the results, and neither my own nor RT's modules.

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  • How to list arecords avaible formats

    - by Puggan Se
    I built a tool that uses arecord, but now i noticed that it dosn't work on some computers, as the format isn't supported by that hardware, how can i see/list what formats thats supported? Arecords man page says: -f --format=FORMAT Sample format Recognized sample formats are: S8 U8 S16_LE S16_BE U16_LE U16_BE S24_LE S24_BE U24_LE U24_BE S32_LE S32_BE U32_LE U32_BE FLOAT_LE FLOAT_BE FLOAT64_LE FLOAT64_BE IEC958_SUBFRAME_LE IEC958_SUBFRAME_BE MU_LAW A_LAW IMA_ADPCM MPEG GSM SPECIAL S24_3LE S24_3BE U24_3LE U24_3BE S20_3LE S20_3BE U20_3LE U20_3BE S18_3LE S18_3BE U18_3LE Some of these may not be available on selected hardware

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  • What are the differences between Special Edition and the Third Edition of Stroustrup's The C++ Programming Language?

    - by TheBlueCat
    I'm buying a few C++ books after moving from Java. I obviously want to read the reference manual from the man himself, though I cannot tell the difference between these two editions. The special edition is ten pages shorter than the third edition. However, the special edition is recommended over the third edition and it seems this version covers the ASCII standard when the other edition does not. Can anyone shed a bit of light on this?

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  • Web Writing Services - When It's Time to Pass the Ball

    When it comes to making our online marketing campaigns a success, most of us would be better off hiring a variety of web writing services to help. After all, while we've all seen (and envied) the one-man-act extraordinaire, there isn't too many of us who haven't been victim to the frazzled, pressure-cooker feeling of having sole responsibility for our companies' successes either. Besides, who in their right mind would put that kind of pressure on themselves when outsourcing to a web writing service can be just as profitable?

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  • World Wide Web - How Did it Come About?

    Indeed, necessity is the mother of invention. When there is a need and the means of satisfying the same does not exist, man is inevitably comes up to the challenge of creating a tool to fill his need. Such is the very same reason why the World Wide Web (WWW) exists today.

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  • Die Fast / Flashback Recovery Area (FRA)

    - by Sebastian Solbach (DBA Community)
    In der Vergangenheit waren Informationen zur Fast Recovery Area (kurz FRA) bzw. Flashback Recovery Area, wie die FRA for 11gR2 benannt wurde, immer mal wieder in den einzelnen DBA Community Tipps enthalten, wenn dies gerade zum Thema passte oder für den Tipp relevant waren. Aus aktuellem Anlass haben wir uns deswegen entschlossen, die Informationen zur FRA im heutigen DBA Community Tipp  zu bündeln, damit man sofort eine Übersicht erhält und die automatischen Mechanismen innerhalb der FRA versteht. Zum Tipp.

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  • Starting a Business Website in 3 Easy Steps

    Starting a business website is the easiest thing under the sun - if you know someone who can guide you. Of course you can outsource but why would you outsource if it is easy and the best man or woman for the job is none other than yours truly. You may be scared of all the computer, internet and website information that you probably know nothing of. And it is OK to be scared.

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  • FBI Goes After 'Scareware' Scams

    <b>eSecurity Planet:</b> "The FBI said late last week that it has filed federal indictments against an Ohio man and two foreign residents in a move meant to halt one of the largest "scareware" malware scams."

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