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yc c

Qubes - 4 views

qubes-os.org

linux OS security

shared by yc c on 08 Apr 10 - Cached
  • yc c on 08 Apr 10
     
    Isn't Qubes just another Linux distribution after all? Well, if you really want to call it a distribution, then we're more of a "Xen distribution", rather then a Linux one. But Qubes is much more than just Xen packaging -- it has its own VM management infrastructure, with support for template VMs, centralized VM updating, etc, and also its very unique GUI virtualization infrastructure. What is the main concept behind Qubes? To build security on the "Security by Isolation" principle. Key architecture features:Based on a secure bare-metal hypervisor (Xen)Networking code sand-boxed in an unprivileged VM (using IOMMU/VT-d)No networking code in the privileged domain (dom0)All user applications run in "AppVMs", lightweight VMs based on LinuxCentralized updates of all AppVMs based on the same templateQubes GUI virtualization presents applications like if they were running locallyQubes GUI provides isolation between apps sharing the same desktopStorage drivers and backends sand-boxed in an unprivileged virtual machine(*)Secure system boot based on Intel TXT(*)
anonymous

Disk IO information with a Unix / Linux background - 0 views

www.dataclinic.co.uk/-io-information-linux-unix.htm

information performance tuning disk io linux sysadmin

shared by anonymous on 20 Aug 10 - Cached
  • The disk's ITR rating and internal cache size can be critical when tuning maxcontig (maximum contiguous I/O size). Note: maxphys and maxcontig must be tuned at the same time. The unit of measurement for maxphys is bytes; maxcontig is in blocks. maxcontig can be changed via the mkfs, newfs or tunefs commands.
  • anonymous on 20 Aug 10
     
    The disk's ITR rating and internal cache size can be critical when tuning maxcontig (maximum contiguous I/O size). Note: maxphys and maxcontig must be tuned at the same time. The unit of measurement for maxphys is bytes; maxcontig is in blocks. maxcontig can be changed via the mkfs, newfs or tunefs commands.
hpmaxi -

How to Make Wealth - 0 views

paulgraham.com/wealth.html

wealth entrepreneurship howto essay career

shared by hpmaxi - on 08 Mar 10 - Cached
  • Startups usually involve technology, so much so that the phrase "high-tech startup" is almost redundant. A startup is a small company that takes on a hard technical problem.
  • Here is a brief sketch of the economic proposition. If you're a good hacker in your mid twenties, you can get a job paying about $80,000 per year. So on average such a hacker must be able to do at least $80,000 worth of work per year for the company just to break even
  • and if you focus you can probably get three times as much done in an hour
  • ...30 more annotations...
  • I'm claiming you could be 36 times more productive than you're expected to be in a random corporate job.
  • then a smart hacker working very hard without any corporate bullshit to slow him down should be able to do work worth about $3 million a year
  • f you want to make a million dollars, you have to endure a million dollars' worth of pain.
  • Bill Gates is a smart, determined, and hardworking man, but you need more than that to make as much money as he has. You also need to be very lucky.
  • If you want to create wealth, it will help to understand what it is. Wealth is not the same thing as money. [3] Wealth is as old as human history. Far older, in fact; ants have wealth. Money is a comparatively recent invention.
  • talking about making money can make it harder to understand how to make money.
  • the craftsmen. Their hand-made objects become store-bought ones.
  • A programmer can sit down in front of a computer and create wealth. A good piece of software is, in itself, a valuable thing.
  • And so it's clearer to programmers that wealth is something that's made, rather than being distributed, like slices of a pie, by some imaginary Daddy
  • we had one programmer who was a sort of monster of productivity
  • A great programmer, on a roll, could create a million dollars worth of wealth in a couple weeks. A mediocre programmer over the same period will generate zero or even negative wealth (e.g. by introducing bugs).
  • The top 5% of programmers probably write 99% of the good software.
  • Hackers often donate their work by writing open source software that anyone can use for free. I am much the richer for the operating system FreeBSD, which I'm running on the computer I'm using now, and so is Yahoo, which runs it on all their servers.
  • You can't go to your boss and say, I'd like to start working ten times as hard, so will you please pay me ten times as much?
  • A programmer, for example, instead of chugging along maintaining and updating an existing piece of software, could write a whole new piece of software, and with it create a new source of revenue.
  • All a company is is a group of people working together to do something people want. It's doing something people want that matters, not joining the group
  • To get rich you need to get yourself in a situation with two things, measurement and leverage. You need to be in a position where your performance can be measured, or there is no way to get paid more by doing more. And you have to have leverage, in the sense that the decisions you make have a big effect.
  • If you're in a job that feels safe, you are not going to get rich, because if there is no danger there is almost certainly no leverage.
  • All you need to do is be part of a small group working on a hard problem
  • Steve Jobs once said that the success or failure of a startup depends on the first ten employees. I agree
  • What is technology? It's technique. It's the way we all do things. And when you discover a new way to do things, its value is multiplied by all the people who use it. It is the proverbial fishing rod, rather than the fish. That's the difference between a startup and a restaurant or a barber shop. You fry eggs or cut hair one customer at a time. Whereas if you solve a technical problem that a lot of people care about, you help everyone who uses your solution. That's leverage
  • If there were two features we could add to our software, both equally valuable in proportion to their difficulty, we'd always take the harder one
  • I can remember times when we were just exhausted after wrestling all day with some horrible technical problem. And I'd be delighted, because something that was hard for us would be impossible for our competitors
  • Start by picking a hard problem, and then at every decision point, take the harder choice.
  • You'd think that a company about to buy you would do a lot of research and decide for themselves how valuable your technology was.
  • Not at all. What they go by is the number of users you have
  • Wealth is what people want, and if people aren't using your software, maybe it's not just because you're bad at marketing. Maybe it's because you haven't made what they want.
  • Now we can recognize this as something hackers already know to avoid: premature optimization. Get a version 1.0 out there as soon as you can. Until you have some users to measure, you're optimizing based on guesses.
  • In that respect the Cold War teaches the same lesson as World War II and, for that matter, most wars in recent history. Don't let a ruling class of warriors and politicians squash the entrepreneurs
  • Let the nerds keep their lunch money, and you rule the world.
Tim Mullins

Linux Mint 8 Helena x64 Edition RC - Review Screencast - 0 views

www.osgui.com/videos.html

Review Screencast of Linux Mint 8 Helena x64 Edition Release Candidate which is the same as but 64bit rather than 32bit. I spend most video showing you all benefits and extra features over standard Ubuntu 9.

shared by Tim Mullins on 11 Dec 09 - Cached
  • Tim Mullins on 11 Dec 09
     
    Review Screencast of Linux Mint 8 Helena x64 Edition Release Candidate, which is the same as Linux Mint 8 but is 64bit rather than 32bit. I spend most of the video showing you all the benefits and extra features of Linux Mint over standard Ubuntu Linux 9.10 Karmic Koala. 100% original video production
Marc Lijour

Linux Is on the Rise For Business - PCWorld Business Center - 1 views

www.pcworld.com/..._on_the_rise_for_business.html

linux windows microsoft migration FLOSS business IT management adoption t08

shared by Marc Lijour on 26 Jan 11 - No Cached
  • according to a report released Tuesday by the Linux Foundation in partnership with Yeoman Technology Group. With data from an invited pool of more than 1900 respondents, the survey found that 76 percent of the world's largest organizations plan to add more Linux servers over the next 12 months. By contrast, only 41 percent plan to add Windows servers, while 44 percent say they will be decreasing or maintaining the same number of Windows machines over the next year.
  • Large companies are planning to increase their reliance on Linux over the next five years
  • Looking out over five years, the difference is even more marked: A full 79 percent plan to add Linux servers over that time, while only 21 percent will add new Windows servers.
  • ...11 more annotations...
  • To understand Linux trends among the world's largest companies and government organizations, Yeoman and The Linux Foundation focused in particular on responses from a subset of close to 400 respondents representing organizations with annual revenues of $500 million or more or greater than 500 employees.
  • Sixty-six percent of the planned Linux deployments mentioned by respondents are for brand-new applications or services, while 37 percent are migrations from Windows, the survey found.
  • "We are seeing more migration at Microsoft's expense than the industry analysis might lead you to believe," McPherson noted.
  • Since Linux is free, sales-linked estimates tend to underestimate its adoption considerably.
  • this survey involves some sample bias
  • the data isn't tied to server sales the way so much industry data is
  • a full 60 percent of respondents said they're planning to use Linux for more mission-critical workloads than they have in the past
  • Lack of vendor lock-in and openness of the code were other frequently cited drivers
  • long-term viability of the platform
  • choice of software and hardware
  • n cloud contexts, meanwhile, Linux led far and away, with 70 percent naming it as their primary platform, compared with 18 percent citing Windows and 11 citing Unix
  • Marc Lijour on 26 Jan 11
     
    according to a report released Tuesday by the Linux Foundation in partnership with Yeoman Technology Group. With data from an invited pool of more than 1900 respondents, the survey found that 76 percent of the world's largest organizations plan to add more Linux servers over the next 12 months. By contrast, only 41 percent plan to add Windows servers, while 44 percent say they will be decreasing or maintaining the same number of Windows machines over the next year.
anonymous

12 More of the Best Free Linux Books - Part 1 - LinuxLinks News - 0 views

www.linuxlinks.com/...eBestFreeLinuxBooks-Part1.html

books free ebooks linux

shared by anonymous on 20 Aug 10 - Cached
  • anonymous on 20 Aug 10
     
    "12 More of the Best Free Linux Books Many computer users have an insatiable appetite to deepen their understanding of computer operating systems and computer software. Linux users are no different in that respect. At the same time as developing a huge range of open source software, the Linux community fortunately has also written a vast range of documentation in the form of books, guides, tutorials, HOWTOs, man pages, and other help to aid the learning process. Some of this documentation is intended specifically for a newcomer to Linux, or those that are seeking to move away from a proprietary world and embrace freedom. There are literally thousands of Linux books which are available to purchase from any good (online) book shop. However, the focus of this article is to highlight champion Linux books which make an invaluable contribution to learning about Linux, and which are also available to download without charge. We have tried to select a fairly diverse selection of books in this article so that there should be something of interest here for any type of user whatever their level of computing knowledge. This article should be read in conjunction with our previous article on free Linux books, entitled 20 of the Best Free Linux Books."
anonymous

DAG: Dstat: Versatile resource statistics tool - 0 views

dag.wieers.com/dstat

dstat monitoring linux applications software

shared by anonymous on 20 Aug 10 - Cached
  • anonymous on 20 Aug 10
     
    Dstat: Versatile resource statistics tool Dstat is a versatile replacement for vmstat, iostat, netstat and ifstat. Dstat overcomes some of their limitations and adds some extra features, more counters and flexibility. Dstat is handy for monitoring systems during performance tuning tests, benchmarks or troubleshooting. Dstat allows you to view all of your system resources in real-time, you can eg. compare disk utilization in combination with interrupts from your IDE controller, or compare the network bandwidth numbers directly with the disk throughput (in the same interval)
anonymous

OOM Killer - linux-mm.org Wiki - 0 views

linux-mm.org/OOM_Killer

oom linux kernel bioscope crash panic memory

shared by anonymous on 20 Aug 10 - No Cached
  • anonymous on 20 Aug 10
     
    The functions, code excerpts and comments discussed below here are from mm/oom_kill.c unless otherwise noted. It is the job of the linux 'oom killer' to sacrifice one or more processes in order to free up memory for the system when all else fails. It will also kill any process sharing the same mm_struct as the selected process, for obvious reasons. Any particular process leader may be immunized against the oom killer if the value of its /proc//oomadj is set to the constant OOM_DISABLE (currently defined as -17). The function which does the actual scoring of a process in the effort to find the best candidate for elimination is called badness(), which results from the following call chain: _alloc_pages -> out_of_memory() -> select_bad_process() -> badness() The comments to badness() pretty well speak for themselves:
anonymous

lftp to accelerate ftp / http download speed under Linux and UNIX - 0 views

www.cyberciti.biz/...unix-download-accelerator.html

download linux lftp accelerate parallel filesystem storage

shared by anonymous on 20 Aug 10 - Cached
  • anonymous on 20 Aug 10
     
    "lftp to accelerate ftp / http download speed under Linux and UNIX by Vivek Gite · 4 comments lftp is a file transfer program that allows sophisticated ftp, http and other connections to other hosts. If site is specified then lftp will connect to that site otherwise a connection has to be established with the open command. This is an essential tool for all a Linux admin. I've already written about Linux ultra fast command line download accelerator such as Axel and prozilla. lftp is another tool for same job with more features. "
Sandra Nowakowski

The / (Root) Directory in the Linux File System - Linux Training Online - Linux Concept... - 0 views

www.redhatcert.com/line-linux-concepts-terms.html

boot camp certification command linux operating os rhca rhce rhct system training

shared by Sandra Nowakowski on 09 Sep 08 - Cached
  • Sandra Nowakowski on 09 Sep 08
     
    When you are a new Linux OS (operating system) user starting to get Linux training, you may become frustrated by Linux documentation that uses several different terms to refer to the same thing - or to a similar thing. To help put an end this Linux fru...
Sandra Nowakowski

The /root Home Directory of the Linux root User - Linux Training Online - Linux Concept... - 0 views

www.redhatcert.com/line-linux-concepts-terms.html

boot camp certification hat linux red redhat rhca rhce rhcss rhct training

shared by Sandra Nowakowski on 09 Sep 08 - Cached
  • Sandra Nowakowski on 09 Sep 08
     
    When you start working with Linux OS (operating system) and learning how to user Linux, you will soon discover that there are several Linux terms that are similar, the same, or somehow related. For example, the terms: root user, / (root directory) and ...
yc c

Welcome - netboot.me - 1 views

www.netboot.me

os boot installation backup internet virtual linux desktop

shared by yc c on 30 Jan 10 - No Cached
  • yc c on 30 Jan 10
     
    netboot.me is a service that allows you to boot nearly any operating system or utility on any computer with a wired internet connection - without having to know ahead of time what you'll want to boot. Once you can netboot.me, you never need to update your boot disk again! In order for your computer to know where to find the netboot servers, you need to change your DHCP settings to return some extra information. The two relevant pieces of information: next-server, which should be "tftp.netboot.me", and "filename", which should be "netbootme.kpxe". How to set these settings depends on your DHCP server. For dhcpd, simply add the following to the relevant 'subnet' section of your configuration: next-server "tftp.netboot.me" filename "netbootme.kpxe" For dnsmasq, the following line in /etc/dnsmasq.conf will achieve the same effect: dhcp-boot=netbootme.kpxe,tftp.netboot.me netboot.me works through the magic of netbooting. There are a number of ways to boot a computer with netboot.me. The simplest is to download a bootable image and burn it to a CD, USB memory stick, or floppy disk. Boot off it on any networked computer, and it will automatically fetch the latest boot options from netboot.me and let you choose from dozens of installation, recovery, testing, portable desktop and other tools. You can also start netboot.me from any computer running gPXE, or from any netbootable computer with some simple tweaks to your DHCP server.
James Cady

Enjoy a painless installation of Debian with your firmware-enhanced CD/DVD - 0 views

raphaelhertzog.com/...debian-cd-dvd

Debian linux

shared by James Cady on 07 Jun 11 - No Cached
  • James Cady on 07 Jun 11
     
    The CD and DVD sold on this page are not like those that you can buy elsewhere. They are not official Debian DVD although they have been built with the same tools and contain official Debian packages.
Graham Perrin

Linux Trojan rears its ugly head | Chester Wisniewski's Blog - 5 views

www.sophos.com/...linux-malware-rears-ugly-head

2010 2010-06 2010-06-17 Linux

shared by Graham Perrin on 28 Jul 10 - No Cached
  • Linux Trojan rears its ugly head
  • In the Linux world, best practices by administrators
  • several mistakes
  • ...8 more annotations...
  • not monitoring their repository
  • stopped publishing checksums
  • now GPG-signing
  • checksums are often hosted on the same system as their archives, or on a system with shared credentials. This serves almost no purpose
  • alter the published checksum
  • When a signature or checksum is provided, check it. That's why they're provided
  • June 12th, 2010
  • Chester Wisniewski
anonymous

25 Firefox Extensions to Make You More Productive - 0 views

lifedev.net/...ns-to-make-you-more-productive

extensions firefox musthave

shared by anonymous on 11 Feb 08 - Cached
  • Autocopy - The name pretty much says it all. Instead of having to hit cmd+c (or ctrl + C for our Windows readers), every time you highlight text it automatically copies it to the clipboard. If you don’t want it on 100% of the time, you can toggle it on and off in the bottom-right of the browser.
    • anonymous
      anonymous on 11 Feb 08
       
      Well, in the X Window system that's default behaviour. Don't need an extension for that.
  • Scrapbook - Much like the Read it Later extension, Scrapbook allows you to quickly save pages for later reading. However, it has a few more great features, like taking whole snippets of pages (like Google Notebook), searching within snippets, saving whole websites, and you can even organize the snippets like bookmarks. Perfect for researching or in-depth bookmarking.
  • Copy Plain Text- The name pretty much says it all. If you do a lot of writing in WYSIWYG editors (blogging and other word processors), then this extension can come in pretty handy. Copy Plain Text will leave all the bolds, italics and other unwanted formatting when you copy and paste into text fields.
  • ...2 more annotations...
  • FEBE - On the surface, FEBE will quickly and easily backup your Firefox extensions. But the fun doesn’t stop there. You can also sync multiple computers with the same Firefox extensions, and even set up automatic backups, ensuring that you’ll never lose your Firefox configurations again.
  • del.icio.us bookmarks - Save, search and share your Del.icio.us bookmarks easily inside of Firefox. Browsing your bookmarks is especially easy with the del.icio.us sidebar.
Marco Castellani

Linux.com :: KDE 4.1 rocks the desktop - 0 views

www.linux.com/142661

kde linux segnalerumore

shared by Marco Castellani on 29 Jul 08 - Cached
  • I'm happy to announce that KDE 4.1 simply rocks.
  • As far as eye candy, KDE 4.1 looks simply stunning. While its theme uses the same foundation as 4.0, the developers have improved it with many tweaks.
  • KDE marks a triumphant return to full usability with the 4.1 release.
Yi Wang

In the Beginning was the Command Line - 0 views

adam.shand.net/...beginning_was_the_command_line

command line hack universe fun book Microsoft linux metaphor Disney

shared by Yi Wang on 13 Jan 11 - Cached
  • Like the Earth's biosphere, the technosphere is very thin compared to what is above and what is below.
    • Yi Wang
      Yi Wang on 13 Jan 11
       
      beautiful visualization
  • fossilization process
  • temporal arbitrage.
  • ...8 more annotations...
  • Disney does mediated experiences better than anyone. If they understood what OSes are, and why people use them, they could crush Microsoft in a year or two.
  • But more importantly, it comes out of the fact that, during this century, intellectualism failed, and everyone knows it.
  • lip service
  • How badly we want it can be measured by the size of Bill Gates's fortune.
  • When TCP/IP was invented, running it was an honor reserved for Serious Computers--mainframes and high-powered minicomputers used in technical and commercial settings--and so the protocol is engineered around the assumption that every computer using it is a serious machine, capable of doing many things at once. Not to put too fine a point on it, a Unix machine.
  • Young Americans who leave their great big homogeneous country and visit some other part of the world typically go through several stages of culture shock: first, dumb wide-eyed astonishment. Then a tentative engagement with the new country's manners, cuisine, public transit systems and toilets, leading to a brief period of fatuous confidence that they are instant experts on the new country. As the visit wears on, homesickness begins to set in, and the traveler begins to appreciate, for the first time, how much he or she took for granted at home. At the same time it begins to seem obvious that many of one's own cultures and traditions are essentially arbitrary, and could have been different; driving on the right side of the road, for example. When the traveler returns home and takes stock of the experience, he or she may have learned a good deal more about America than about the country they went to visit.
  • We like plain dealings and straightforward transactions in America.
  • This would simply not be worth the effort, and so "wc" would never be written as an independent program at all. Instead users would have to wait for a word count feature to appear in a commercial software package.
liza cainz

Fast, Reliable and Accurate Microsoft Support XP Tech Service - 1 views

I was amazed that after reformatting my hard drive to switch from Vista to XP, Help Gurus allowed me to use the same code I had already purchased on my new operating system! I held my breath as I t...

support service Desktop computer technical services PC tech

started by liza cainz on 04 Jan 11 no follow-up yet
Robin Dale

Steps to Install WHMCS Billing Software using Softaculous - 0 views

www.eukhost.com/...ith-softaculous-auto-installer

install whmcs installation license key softaculous

shared by Robin Dale on 17 Feb 11 - No Cached
  • Robin Dale on 17 Feb 11
     
    Softaculous is an auto installer tool same like Fantastico, but has around 176 ready Java and PHP based scripts to install within few clicks compare to Fantastico one-click installer. It allows you to install various scripts supported and build your own websites, blogs, forums, photo galleries and many more!
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