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  • Performance Driven Manufacturing

    Manufacturers are searching for new, creative ways to address growing demands of global manufacturing. They want the latest tools and technologies to boost performance from their operations, suppliers, partners, distributors, and extended ecosystem, and they need global views for better visibility - both internally and across the extended supply chain. In addition, operations must move information more effectively to gain real-time insight into manufacturing shop floor status. Whether it's inside the plant or outside the traditional factory walls, manufacturers are searching for solutions to help them produce more for less, lower their total cost of ownership (TCO), and improve their return on investment (ROI).

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  • Cloud Deployment Models

    - by B R Clouse
    Normal 0 false false false EN-US X-NONE X-NONE As the cloud paradigm grows in depth and breadth, more readers are approaching the topic for the first time, or from a new perspective.  This blog is a basic review of  cloud deployment models, to help orient newcomers and neophytes. Most cloud deployments today are either private or public. It is also possible to connect a private cloud and a public cloud to form a hybrid cloud. A private cloud is for the exclusive use of an organization. Enterprises, universities and government agencies throughout the world are using private clouds. Some have designed, built and now manage their private clouds. Others use a private cloud that was built by and is now managed by a provider, hosted either onsite or at the provider’s datacenter. Because private clouds are for exclusive use, they are usually the option chosen by organizations with concerns about data security and guaranteed performance. Public clouds are open to anyone with an Internet connection. Because they require no capital investment from their users, they are particularly attractive to companies with limited resources in less regulated environments and for temporary workloads such as development and test environments. Public clouds offer a range of products, from end-user software packages to more basic services such as databases or operating environments. Public clouds may also offer cloud services such as a disaster recovery for a private cloud, or the ability to “cloudburst” a temporary workload spike from a private cloud to a public cloud. These are examples of a hybrid cloud. These are most feasible when the private and public clouds are built with similar technologies. Usually people think of a public cloud in terms of a user role, e.g., “Which public cloud should I consider using?” But someone needs to own and manage that public cloud. The company who owns and operates a public cloud is known as a public cloud provider. Oracle Database Cloud Service, Amazon RDS, database.com and Savvis Symphony Database are examples of public cloud database services. Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} When evaluating deployment models, be aware that you can use any or all of the available options. Some workloads may be best-suited for a private cloud, some for a public or hybrid cloud. And you might deploy multiple private clouds in your organization. If you are going to combine multiple clouds, then you want to make sure that each cloud is based on a consistent technology portfolio and architecture. This simplifies management and gives you the greatest flexibility in moving resources and workloads among your different clouds. Oracle’s portfolio of cloud products and services enables both deployment models. Oracle can manage either model. Universities, government agencies and companies in all types of business everywhere in the world are using clouds built with the Oracle portfolio. By employing a consistent portfolio, these customers are able to run all of their workloads – from test and development to the most mission-critical -- in a consistent manner: One Enterprise Cloud, powered by Oracle.   /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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  • How can I estimate the entropy of a password?

    - by Wug
    Having read various resources about password strength I'm trying to create an algorithm that will provide a rough estimation of how much entropy a password has. I'm trying to create an algorithm that's as comprehensive as possible. At this point I only have pseudocode, but the algorithm covers the following: password length repeated characters patterns (logical) different character spaces (LC, UC, Numeric, Special, Extended) dictionary attacks It does NOT cover the following, and SHOULD cover it WELL (though not perfectly): ordering (passwords can be strictly ordered by output of this algorithm) patterns (spatial) Can anyone provide some insight on what this algorithm might be weak to? Specifically, can anyone think of situations where feeding a password to the algorithm would OVERESTIMATE its strength? Underestimations are less of an issue. The algorithm: // the password to test password = ? length = length(password) // unique character counts from password (duplicates discarded) uqlca = number of unique lowercase alphabetic characters in password uquca = number of uppercase alphabetic characters uqd = number of unique digits uqsp = number of unique special characters (anything with a key on the keyboard) uqxc = number of unique special special characters (alt codes, extended-ascii stuff) // algorithm parameters, total sizes of alphabet spaces Nlca = total possible number of lowercase letters (26) Nuca = total uppercase letters (26) Nd = total digits (10) Nsp = total special characters (32 or something) Nxc = total extended ascii characters that dont fit into other categorys (idk, 50?) // algorithm parameters, pw strength growth rates as percentages (per character) flca = entropy growth factor for lowercase letters (.25 is probably a good value) fuca = EGF for uppercase letters (.4 is probably good) fd = EGF for digits (.4 is probably good) fsp = EGF for special chars (.5 is probably good) fxc = EGF for extended ascii chars (.75 is probably good) // repetition factors. few unique letters == low factor, many unique == high rflca = (1 - (1 - flca) ^ uqlca) rfuca = (1 - (1 - fuca) ^ uquca) rfd = (1 - (1 - fd ) ^ uqd ) rfsp = (1 - (1 - fsp ) ^ uqsp ) rfxc = (1 - (1 - fxc ) ^ uqxc ) // digit strengths strength = ( rflca * Nlca + rfuca * Nuca + rfd * Nd + rfsp * Nsp + rfxc * Nxc ) ^ length entropybits = log_base_2(strength) A few inputs and their desired and actual entropy_bits outputs: INPUT DESIRED ACTUAL aaa very pathetic 8.1 aaaaaaaaa pathetic 24.7 abcdefghi weak 31.2 H0ley$Mol3y_ strong 72.2 s^fU¬5ü;y34G< wtf 88.9 [a^36]* pathetic 97.2 [a^20]A[a^15]* strong 146.8 xkcd1** medium 79.3 xkcd2** wtf 160.5 * these 2 passwords use shortened notation, where [a^N] expands to N a's. ** xkcd1 = "Tr0ub4dor&3", xkcd2 = "correct horse battery staple" The algorithm does realize (correctly) that increasing the alphabet size (even by one digit) vastly strengthens long passwords, as shown by the difference in entropy_bits for the 6th and 7th passwords, which both consist of 36 a's, but the second's 21st a is capitalized. However, they do not account for the fact that having a password of 36 a's is not a good idea, it's easily broken with a weak password cracker (and anyone who watches you type it will see it) and the algorithm doesn't reflect that. It does, however, reflect the fact that xkcd1 is a weak password compared to xkcd2, despite having greater complexity density (is this even a thing?). How can I improve this algorithm? Addendum 1 Dictionary attacks and pattern based attacks seem to be the big thing, so I'll take a stab at addressing those. I could perform a comprehensive search through the password for words from a word list and replace words with tokens unique to the words they represent. Word-tokens would then be treated as characters and have their own weight system, and would add their own weights to the password. I'd need a few new algorithm parameters (I'll call them lw, Nw ~= 2^11, fw ~= .5, and rfw) and I'd factor the weight into the password as I would any of the other weights. This word search could be specially modified to match both lowercase and uppercase letters as well as common character substitutions, like that of E with 3. If I didn't add extra weight to such matched words, the algorithm would underestimate their strength by a bit or two per word, which is OK. Otherwise, a general rule would be, for each non-perfect character match, give the word a bonus bit. I could then perform simple pattern checks, such as searches for runs of repeated characters and derivative tests (take the difference between each character), which would identify patterns such as 'aaaaa' and '12345', and replace each detected pattern with a pattern token, unique to the pattern and length. The algorithmic parameters (specifically, entropy per pattern) could be generated on the fly based on the pattern. At this point, I'd take the length of the password. Each word token and pattern token would count as one character; each token would replace the characters they symbolically represented. I made up some sort of pattern notation, but it includes the pattern length l, the pattern order o, and the base element b. This information could be used to compute some arbitrary weight for each pattern. I'd do something better in actual code. Modified Example: Password: 1234kitty$$$$$herpderp Tokenized: 1 2 3 4 k i t t y $ $ $ $ $ h e r p d e r p Words Filtered: 1 2 3 4 @W5783 $ $ $ $ $ @W9001 @W9002 Patterns Filtered: @P[l=4,o=1,b='1'] @W5783 @P[l=5,o=0,b='$'] @W9001 @W9002 Breakdown: 3 small, unique words and 2 patterns Entropy: about 45 bits, as per modified algorithm Password: correcthorsebatterystaple Tokenized: c o r r e c t h o r s e b a t t e r y s t a p l e Words Filtered: @W6783 @W7923 @W1535 @W2285 Breakdown: 4 small, unique words and no patterns Entropy: 43 bits, as per modified algorithm The exact semantics of how entropy is calculated from patterns is up for discussion. I was thinking something like: entropy(b) * l * (o + 1) // o will be either zero or one The modified algorithm would find flaws with and reduce the strength of each password in the original table, with the exception of s^fU¬5ü;y34G<, which contains no words or patterns.

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  • ADF Partner Community News Session - Open Invitation: "ADF as a basis of Fusion Apps - the biggest ADF project ever (in English)"

    - by Frank Nimphius
    After a successful guest performance of Ted Farrell in 2011, this year's international ADF speaker to speak during an ADF News session is Chris Muir from Oracle.  ADF News Session - Friday September 14, 8:30 AM - 9.00 AM (CET) - Topic: ADF as a basis of Fusion Apps - the biggest ADF project ever (in English) +++ this webcast will be conducted in English +++ dial-in numbers conc. ADF News Session, Sep. 14 2012 You are invited to join the next ADF News Session, that is going to take place September 14 2012 speaker:  Chris Muir / Oracle time:         8:30 AM (CET) duration:  30 minutes topic:        ADF as a basis of Fusion Apps - the biggest ADF project ever (in English) dial-in webconf: https://oraclemeetings.webex.com conf ID:      595 484 157 confkey:    123456 Please enter your name and an abbreviation of you company name when dialing in (please don´t use blanks and special characters). Please notice that this information will be visible to all participants of the webcast. Thank you. dial-in telco:           +49 (0)69 2222 16 106 or +49 (0)800 66 485 15           ConfCode: 208 503 9           SecurityPasscode: 112233  Other toll-free dial in numbers for EMEA countries are listed below (information is supplied without liability): Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} table.MsoTableGrid {mso-style-name:"Table Grid"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-priority:59; mso-style-unhide:no; border:solid windowtext 1.0pt; mso-border-alt:solid windowtext .5pt; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-border-insideh:.5pt solid windowtext; mso-border-insidev:.5pt solid windowtext; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Austria 0800005967 Belgium 080048331 Croatia 0800222323 Czech Republic 800701080 Denmark  80889099 Estonia 8000111325 Egypt 08000000213 Finland 0800112073 France 0805632866 Greece 00800127897 Hungary 0680011201 Iceland 8008779 Ireland 1800932479 Israel 1809452571 Italy 800897629 Latvia 80002397 Luxembourg 80026598 Netherlands 08000235028 Norway 80010796 Poland 8001213557 Portugal 800814990 Romania 0800895563 Russia 81080029351012 Saudi Arabia 8008444320 Slovak Republic 0800001586 Slovenia 080080466 South Africa 0800980961 Spain 800098600 Sweden 856619465 Switzerland 0800650026 Turkey 00800 44632129 Ukraine 0800500166 United Arab Emirates 8000440344 United Kingdom 08006948154  

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  • ubuntu is not booting, after dual boot installation with windows 7

    - by Kranthi
    Recently i bought a lenovo u410 ultrabook. It has given along with windows 7 and 4 primary partitions. So to install ubuntu 12.04 i removed one of the primary partition and made it as extended partition. In that extended partition, i allocated memory for the swap and root (/) directory and then installed the ubuntu. After that by using EasyBCD tool, added ubuntu to the boot menu in grub2. So when i try to boot into ubuntu it is showing grub prompt only. From there how can i boot into ubuntu. Thanks in advance

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  • nicstat update - version 1.92

    - by user12608033
    Another minor nicstat release is now available. Changes for Version 1.92, October 2012 Common Added "-M" option to change throughput statistics to Mbps (Megabits per second). Suggestion from Darren Todd. Fixed bugs with printing extended parseable format (-xp) Fixed man page's description of extended parseable output. Solaris Fixed memory leak associated with g_getif_list Add 2nd argument to dladm_open() for Solaris 11.1 Modify nicstat.sh to handle Solaris 11.1 Linux Modify nicstat.sh to see "x86_64" cputype as "i386". All Linux binaries are built as 32-bit, so we do not need to differentiate these two cpu types. Availability nicstat source and binaries are available from sourceforge. History For more history on nicstat, see my earlier entry

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  • C++ Unions bit fields task

    - by learningtolive
    Can somebody clear me out why would I use union and with what purpose the same address for the cin'ed variable and bit field (task from the Schildts C++ book)? In other words why would I use union for : char ch; struct byte bit; // Display the ASCII code in binary for characters. #include <iostream> #include <conio.h> using namespace std; // a bit field that will be decoded struct byte { unsigned a : 1; unsigned b : 1; unsigned c : 1; unsigned d : 1; unsigned e : 1; unsigned f : 1; unsigned g : 1; unsigned h : 1; }; union bits { char ch; struct byte bit; } ascii ; void disp_bits(bits b); int main() { do { cin >> ascii.ch; cout << ": "; disp_bits(ascii); } while(ascii.ch!='q'); // quit if q typed return 0; } // Display the bit pattern for each character. void disp_bits(bits b) { if(b.bit.h) cout << "1 "; else cout << "0 "; if(b.bit.g) cout << "1 "; else cout << "0 "; if(b.bit.f) cout << "1 "; else cout << "0 "; if(b.bit.e) cout << "1 "; else cout << "0 "; if(b.bit.d) cout << "1 "; else cout << "0 "; if(b.bit.c) cout << "1 "; else cout << "0 "; if(b.bit.b) cout << "1 "; else cout << "0 "; if(b.bit.a) cout << "1 "; else cout << "0 "; cout << "\n"; }

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  • Swapping Function (Fn) and Control (Ctrl) Keys on Lenovo ThinkPad W500

    - by Howiecamp
    I'd like to swap the Fn and Ctrl keys on my ThinkPad W500 (like many others! See: How can I switch the function and control keys on my laptop? and Intercepting the Fn key on laptops) Numerous folks indicate that Windows doesn't register the Fn key as a keypress but using Mihov ASCII Master 2.0, that gives the ASCII value of a keypress, I see the Fn key returning FF (perhaps FF in this case means 'not registered'). I also see that keys like Ctrl register with one ASCII code when pressed alone and another when pressed in combo with another key. Fn will only register when pressed alone, so Windows definitely isn't seeing the combo. This took a solution like AutoHotKey off the table. I ran KeyTweak (which shows you the hardware scan codes of a keypress and the Fn key registerd as 57443). Using this program I remapped Fn to the Ctrl key; this worked perfectly. However, I suspect that because of the issue in #1, the combo of, for example, Fn + C did not execute a copy. Short of retraining my pinky I'm actually considering removing the keyboard and resoldering the connections to swap those keys. I'd love to get some input as to the root technical issue(s) and possible solutions here.

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  • Can't install xclip on Ubuntu 10.10

    - by wildster
    I'm trying to load an SSH key to Github from a new machine and this command is not working: sudo apt-get install xclip Reading package lists... Done Building dependency tree Reading state information... Done Package xclip is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package xclip has no installation candidate when I try: sudo aptitude install xclip Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done No candidate version found for xclip No candidate version found for xclip The following partially installed packages will be configured: synaptics-dkms 0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0B of archives. After unpacking 0B will be used. Writing extended state information... Done Setting up synaptics-dkms (1.1.1) ... Loading new synaptics-1.1.1 DKMS files... Error! Cannot locate /usr/src/synaptics-1.1.1.dkms.tar.gz. File does not exist. dpkg: error processing synaptics-dkms (--configure): subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: synaptics-dkms E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: Setting up synaptics-dkms (1.1.1) ... Loading new synaptics-1.1.1 DKMS files... Error! Cannot locate /usr/src/synaptics-1.1.1.dkms.tar.gz. File does not exist. dpkg: error processing synaptics-dkms (--configure): subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: synaptics-dkms Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done Any idea how I can install this? Mucho thanks in advance

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  • Ubuntu 12.04/12.10 can't detect windows or any other partitions(Asus z77 UEFI BIOS)

    - by user971155
    I've recently completed tinkering my new pc(motherboard ASUS z77 with UEFI BIOS) and unfortunately not everything works quite well. After installing windows 7 ultimate on a single primary partition(SATA drive) I decided to allocate one more logical partition for additional needs. When I tried doing it with the manager - it said that it couldn't allocate requested size even though I certainly asked for much less than it was available. I thought that it might have been a windows issue and proceded to installing Ubuntu 12.10 x64. When the graphical interface loaded it showed me a message stating that it can't find any other operating system on the drive. When I used custom partioning option it showed me none of my current partions(including that with windows). However, when I boot with "Try Ubuntu" feature it does find them ! I find it weird though. Here's what the console present me with: ubuntu@ubuntu:~$ sudo os-prober /dev/sda1:Windows 7 (loader):Windows:chain ubuntu@ubuntu:~$ sudo fdisk -l Disk /dev/sda: 640.1 GB, 640135028736 bytes 255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00072b98 Device Boot Start End Blocks Id System /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT /dev/sda2 206848 100020223 49906688 7 HPFS/NTFS/exFAT /dev/sda3 100022270 1250263039 575120385 5 Extended /dev/sda4 566669312 1250263039 341796864 83 Linux I also tried creating partitions from disk utility which results in error: , Error creating partition: helper exited with exit code 1: In part_add_partition: device_file=/dev/sda, start=51211402240, size=1923000000, type=0x83 Entering MS-DOS parser (offset=0, size=640135028736) MSDOS_MAGIC found looking at part 0 (offset 1048576, size 104857600, type 0x07) new part entry looking at part 1 (offset 105906176, size 51104448512, type 0x07) new part entry looking at part 2 (offset 51211402240, size 588923274240, type 0x05) Entering MS-DOS extended parser (offset=51211402240, size=588923274240) readfrom = 51211402240 MSDOS_MAGIC found Exiting MS-DOS extended parser looking at part 3 (offset 290134687744, size 349999988736, type 0x83) new part entry Exiting MS-DOS parser MSDOS partition table detected containing partition table scheme = 1 got it Error: Can't have overlapping partitions. ped_disk_new() failed Here's what I get when I try to install the system i.stack.imgur.com/pjlb9.png, i.stack.imgur.com/g1lXN.png P.S. It's strange that I even can't create any more partitions neither with disk-utility nor with windows 7 native tools

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  • Can't install xclip on Ubuntu 10.10

    - by wildster
    I'm trying to load an SSH key to Github from a new machine and this command is not working: sudo apt-get install xclip Reading package lists... Done Building dependency tree Reading state information... Done Package xclip is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package xclip has no installation candidate when I try: sudo aptitude install xclip Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done No candidate version found for xclip No candidate version found for xclip The following partially installed packages will be configured: synaptics-dkms 0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Need to get 0B of archives. After unpacking 0B will be used. Writing extended state information... Done Setting up synaptics-dkms (1.1.1) ... Loading new synaptics-1.1.1 DKMS files... Error! Cannot locate /usr/src/synaptics-1.1.1.dkms.tar.gz. File does not exist. dpkg: error processing synaptics-dkms (--configure): subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: synaptics-dkms E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: Setting up synaptics-dkms (1.1.1) ... Loading new synaptics-1.1.1 DKMS files... Error! Cannot locate /usr/src/synaptics-1.1.1.dkms.tar.gz. File does not exist. dpkg: error processing synaptics-dkms (--configure): subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: synaptics-dkms Reading package lists... Done Building dependency tree Reading state information... Done Reading extended state information Initializing package states... Done Any idea how I can install this? Mucho thanks in advance

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  • Triple-Boot + 4 partition Limit

    - by dsimcha
    I just bought a new hard drive so that I could convert my XP-only machine into an XP-Ubuntu-Windows 7 triple boot machine. Since the drive is absurdly huge (1 TB) I wouldn't mind throwing ReactOS into the mix, too. I just found out that master boot records are limited to 4 entries, meaning 4 primary partitions. I had Windows XP set up on my old drive as a boot partition, a program files partition and a media partition. Since I really didn't want to install XP from scratch, I cloned this setup on my new drive. This leaves me one MBR partition entry for installing Windows 7, Ubuntu and ReactOS. I'd like to avoid having to install XP from scratch like the plague, partly because it's supposed to be a safety net in case things go wrong with my other OS's and because I've invested a lot of time getting it set up exactly the way I like it. Here are the options I've considered and why I don't like them: Install Windows 7 on my media partition. This would work, but I prefer to keep my media partition completely separate from any OS, so that I can reformat an OS partition without affecting my media partition at all. Use wubi or something to install Ubuntu in the same partition as something else. Again, this is brittle. Move all my media to a logical drive on an extended partition. Create another logical drive on this extended partition for Ubuntu. The problem here is that extended partitions are rather brittle--if you nuke one, it renders the rest useless. Just put the old drive back in my computer and run XP off it. Use the new one for the other OS's. The problem here is that the old drive is slower and uses extra power, generates extra heat, etc. Can anyone suggest any other possibilities that I may have overlooked?

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  • Fixing damaged partition table

    - by dr4cul4
    This is continuation of Recover Extended Partition , but this time I have different problem related partition table it self. I managed to restore partition that I needed and backed up files that were crucial to me (at least those that I had space to store somewhere) OK now get to the problem. My partition table is corrupted, booting RIP Linux I can mount it in truecrypt (and other ones that recovered), but that's basically it. When I launch GParted I have unallocated drive. GParted Dev info: Device Information Model: ATA ST2000DL003-9VT1 Size: 1.82TiB Path: /dev/sda Partition table: unrecognized Heads: 255 Sectors/track: 63 Cylinders: 243201 Total Sectors: 3907029168 Sector size: 512 When I check information on unallocated space I get: File system: unallocated Size: 1.82TiB First sector: 0 Last sector: 3907029167 Total sectors: 3907029168 Warning: Can't have a partition outside the disk! Now the output of testdisc (Analyze): TestDisk 6.13, Data Recovery Utility, November 2011 Christophe GRENIER <[email protected]> http://www.cgsecurity.org Disk /dev/sda - 2000 GB / 1863 GiB - CHS 243201 255 63 Current partition structure: Partition Start End Size in sectors > 1 P Linux 13132 242 39 16353 233 8 51744768 2 E extended LBA 16807 223 1 243201 254 63 3637021626 No partition is bootable 5 L Linux 16807 223 57 20430 39 25 58191872 X extended 20430 70 1 243201 78 13 3578816632 Invalid NTFS or EXFAT boot 6 L HPFS - NTFS 20430 71 58 243201 78 13 3578816512 6 LNext Now fdisk: # fdisk -l /dev/sda Disk /dev/sda: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00039cd0 Device Boot Start End Blocks Id System /dev/sda1 210980864 262725631 25872384 83 Linux /dev/sda2 270018504 3907040129 1818510813 f W95 Ext'd (LBA) /dev/sda5 270018560 328210431 29095936 83 Linux /dev/sda6 328212480 3907028991 1789408256 7 HPFS/NTFS/exFAT Now I would like to fix that to arrange partitions correctly, but I have no idea which tool is capable of fixing that (tried, a few, some of them offered fixing, but it was to risky at the moment - still backing up data).

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  • Need example for BouncyCastle PGP File encryption in C#

    - by Daniel Brink
    Hi, I'm trying to write an c#.net app to encrypt files using my private key (in ascii format) and any other public key (also in ascii format). The BouncyCastle library looks like the correct thing to use, but I cannot find documentation for C#. Could anyone please give me an example of how to use BouncyCastle to encrypt a file. Thank you.

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  • Using a Unicode format for Python's `time.strftime()`

    - by Hosam Aly
    I am trying to call Python's time.strftime() function using a Unicode format string: u'%d\u200f/%m\u200f/%Y %H:%M:%S' (\u200f is the "Right-To-Left Mark" (RLM).) However, I am getting an exception that the RLM character cannot be encoded into ascii: UnicodeEncodeError: 'ascii' codec can't encode character u'\u200f' in position 2: ordinal not in range(128) I have tried searching for an alternative but could not find a reasonable one. Is there an alternative to this function, or a way to make it work with Unicode characters?

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  • Retrieving Encrypted Rich Text file and showing it in a RichTextBox C#

    - by Ranhiru
    OK, my need here is to save whatever typed in the rich text box to a file, encrypted, and also retrieve the text from the file again and show it back on the rich textbox. Here is my save code. private void cmdSave_Click(object sender, EventArgs e) { FileStream fs = new FileStream(filePath, FileMode.Create, FileAccess.Write); AesCryptoServiceProvider aes = new AesCryptoServiceProvider(); aes.GenerateIV(); aes.GenerateKey(); aes.Mode = CipherMode.CBC; TextWriter twKey = new StreamWriter("key"); twKey.Write(ASCIIEncoding.ASCII.GetString(aes.Key)); twKey.Close(); TextWriter twIV = new StreamWriter("IV"); twIV.Write(ASCIIEncoding.ASCII.GetString(aes.IV)); twIV.Close(); ICryptoTransform aesEncrypt = aes.CreateEncryptor(); CryptoStream cryptoStream = new CryptoStream(fs, aesEncrypt, CryptoStreamMode.Write); richTextBox1.SaveFile(cryptoStream, RichTextBoxStreamType.RichText); } I know the security consequences of saving the key and iv in a file but this just for testing :) Well, the saving part works fine which means no exceptions... The file is created in filePath and the key and IV files are created fine too... OK now for retrieving part where I am stuck :S private void cmdOpen_Click(object sender, EventArgs e) { OpenFileDialog openFile = new OpenFileDialog(); openFile.ShowDialog(); FileStream openRTF = new FileStream(openFile.FileName, FileMode.Open, FileAccess.Read); AesCryptoServiceProvider aes = new AesCryptoServiceProvider(); TextReader trKey = new StreamReader("key"); byte[] AesKey = ASCIIEncoding.ASCII.GetBytes(trKey.ReadLine()); TextReader trIV = new StreamReader("IV"); byte[] AesIV = ASCIIEncoding.ASCII.GetBytes(trIV.ReadLine()); aes.Key = AesKey; aes.IV = AesIV; ICryptoTransform aesDecrypt = aes.CreateDecryptor(); CryptoStream cryptoStream = new CryptoStream(openRTF, aesDecrypt, CryptoStreamMode.Read); StreamReader fx = new StreamReader(cryptoStream); richTextBox1.Rtf = fx.ReadToEnd(); //richTextBox1.LoadFile(fx.BaseStream, RichTextBoxStreamType.RichText); } But the richTextBox1.Rtf = fx.ReadToEnd(); throws an cryptographic exception "Padding is invalid and cannot be removed." while richTextBox1.LoadFile(fx.BaseStream, RichTextBoxStreamType.RichText); throws an NotSupportedException "Stream does not support seeking." Any suggestions on what i can do to load the data from the encrypted file and show it in the rich text box?

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  • Decoding not reversing unicode encoding in Django/Python

    - by PhilGo20
    Ok, I have a hardcoded string I declare like this name = u"Par Catégorie" I have a # -- coding: utf-8 -- magic header, so I am guessing it's converted to utf-8 Down the road it's outputted to xml through xml_output.toprettyxml(indent='....', encoding='utf-8') And I get a UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 3: ordinal not in range(128) Most of my data is in French and is ouputted correctly in CDATA nodes, but that one harcoded string keep ... I don't see why an ascii codec is called. what's wrong ?

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  • Saving integers as Strings in MIPS

    - by Krewie
    Hello , i was just wondering, is there any way in MIPS to store a summation of numbers as a string and later read them byte by byte, for example: the sum 657 - sw into a .ascii directive - later lb on the first index to get 6 (in ascii code) same with 5 and so on Is this possible ? //Thx in advance

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  • Octave: importing a large matrix in csv format

    - by Massagran
    I'm trying to import a matrix (about 80.000 rows) from a csv file to Octave. The obvious solution seems something like: load("-ascii","relative_directory/the_file.csv") or maybe renaming the file and trying: load("-ascii", "relative_directory/the_file.txt") Yet I keep getting the error: load: failed to read matrix from file "relative_directory/the_file.csv" or .txt without anymore details. Any tips are appreciated.

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  • Disadvantage of HttpUtility.HtmlAttributeEncode

    - by vinay_rockin
    I have to encode a field so to make it secure of script injection. I know I can use HttpUtility.HtmlEncode and Decode, but this method for HI-ASCII characters goes out of the range of the field size in database and I dont want to change the size of data field column. Instead if I use HttpUtility.HtmlAttributeEncode, it works fine because it does not encode the HI-ASCII characters. Is it safe what can be the disadvantages of it.

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  • Japanese in python function

    - by ha22109
    Hello All, I wrote a function in python which is used to tell me whether the two words are similar or not. but now i want to pass japanese text in my same function.It is giving error not a ascii character.I tried using utf -8 ecoding, but then it giving the same error Non-ASCII character '\xe3' in file Is there any way to do that.I cant generate the msg file for that since the 2 keyword will be not be constant.

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  • Uneditable file and Unreadable(for further processing) file( WHY? ) after processing it through C++

    - by mgj
    Hi...:) This might look to be a very long question to you I understand, but trust me on this its not long. I am not able to identify why after processing this text is not being able to be read and edited. I tried using the ord() function in python to check if the text contains any Unicode characters( non ascii characters) apart from the ascii ones.. I found quite a number of them. I have a strong feeling that this could be due to the original text itself( The INPUT ). Input-File: Just copy paste it into a file "acle5v1.txt" The objective of this code below is to check for upper case characters and to convert it to lower case and also to remove all punctuations so that these words are taken for further processing for word alignment #include<iostrea> #include<fstream> #include<ctype.h> #include<cstring> using namespace std; ifstream fin2("acle5v1.txt"); ofstream fin3("acle5v1_op.txt"); ofstream fin4("chkcharadded.txt"); ofstream fin5("chkcharntadded.txt"); ofstream fin6("chkprintchar.txt"); ofstream fin7("chknonasci.txt"); ofstream fin8("nonprinchar.txt"); int main() { char ch,ch1; fin2.seekg(0); fin3.seekp(0); int flag = 0; while(!fin2.eof()) { ch1=ch; fin2.get(ch); if (isprint(ch))// if the character is printable flag = 1; if(flag) { fin6<<"Printable character:\t"<<ch<<"\t"<<(int)ch<<endl; flag = 0; } else { fin8<<"Non printable character caught:\t"<<ch<<"\t"<<int(ch)<<endl; } if( isalnum(ch) || ch == '@' || ch == ' ' )// checks for alpha numeric characters { fin4<<"char added: "<<ch<<"\tits ascii value: "<<int(ch)<<endl; if(isupper(ch)) { //tolower(ch); fin3<<(char)tolower(ch); } else { fin3<<ch; } } else if( ( ch=='\t' || ch=='.' || ch==',' || ch=='#' || ch=='?' || ch=='!' || ch=='"' || ch != ';' || ch != ':') && ch1 != ' ' ) { fin3<<' '; } else if( (ch=='\t' || ch=='.' || ch==',' || ch=='#' || ch=='?' || ch=='!' || ch=='"' || ch != ';' || ch != ':') && ch1 == ' ' ) { //fin3<<" '; } else if( !(int(ch)>=0 && int(ch)<=127) ) { fin5<<"Char of ascii within range not added: "<<ch<<"\tits ascii value: "<<int(ch)<<endl; } else { fin7<<"Non ascii character caught(could be a -ve value also)\t"<<ch<<int(ch)<<endl; } } return 0; } I have a similar code as the above written in python which gives me an otput which is again not readable and not editable The code in python looks like this: #!/usr/bin/python # -*- coding: UTF-8 -*- import sys input_file=sys.argv[1] output_file=sys.argv[2] list1=[] f=open(input_file) for line in f: line=line.strip() #line=line.rstrip('.') line=line.replace('.','') line=line.replace(',','') line=line.replace('#','') line=line.replace('?','') line=line.replace('!','') line=line.replace('"','') line=line.replace('?','') line=line.replace('|','') line = line.lower() list1.append(line) f.close() f1=open(output_file,'w') f1.write(' '.join(list1)) f1.close() the file takes ip and op at runtime.. as: python punc_remover.py acle5v1.txt acle5v1_op.txt The output of this file is in "acle5v1_op.txt" now after processing this particular output file is needed for further processing. This particular file "aclee5v1_op.txt" is the UNREADABLE Aand UNEDITABLE File that I am not being able to use for further processing. I need this for Word alignment in NLP. I tried readin this output with the following program #include<iostream> #include<fstream> using namespace std; ifstream fin1("acle5v1_op.txt"); ofstream fout1("chckread_acle5v1_op.txt"); ofstream fout2("chcknotread_acle5v1_op.txt"); int main() { char ch; int flag = 0; long int r = 0; long int nr = 0; while(!(fin1)) { fin1.get(ch); if(ch) { flag = 1; } if(flag) { fout1<<ch; flag = 0; r++; } else { fout2<<"Char not been able to be read from source file\n"; nr++; } } cout<<"Number of characters able to be read: "<<r; cout<<endl<<"Number of characters not been able to be read: "<<nr; return 0; } which prints the character if its readable and if not it doesn't print them but I observed the output of both the file is blank thus I could draw a conclusion that this file "acle5v1_op.txt" is UNREADABLE AND UNEDITABLE. Could you please help me on how to deal with this problem.. To tell you a bit about the statistics wrt the original input file "acle5v1.txt" file it has around 3441 lines in it and around 3 million characters in it. Keeping in mind the number of characters in the file you editor might/might not be able to manage to open the file.. I was able to open the file in gedit of Fedora 10 which I am currently using .. This is just to notify you that opening with a particular editor was not actually an issue at least in my case... Can I use scripting languages like Python and Perl to deal with this problem if Yes how? could please be specific on that regard as I am a novice to Perl and Python. Or could you please tell me how do I solve this problem using C++ itself.. Thank you...:) I am really looking forward to some help or guidance on how to go about this problem....

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  • PHP Classes Extend

    - by John
    I have two classes that work seperate from another, but they extend the same class. Is it possible to have them work the same instance of the extended class. I'm wanting the constructor of the extended class to run only once. I know this isn't right but something like this: <?php $oApp = new app; class a extends $oApp {} class b extends $oApp {}

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