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• Problems installing Ruby 1.9.2 and rvm on Debian Lenny

  - by Dave Everitt

  I have currently have Ruby 1.9.1 (bad) and want to install 1.9.3 under rvm. However, rvm requirements gives a long list: install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion But I've hit a problem here: /# apt-get install libreadline6 Reading package lists... Done Building dependency tree Reading state information... Done E: Couldn't find package libreadline6 ...and (I imagine after just hunting down a Debian source to download curl) finding these packages isn't going to be a picnic. Given that there are few packages to install before I can get rvm to install Ruby 1.9.3, what's a good way forward? My sources.list: deb http://archive.debian.org/debian/ lenny main contrib

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• Can't install php5-apc from dotdeb source in Debian 6

  - by YNT

  I can't install php5-apc: ~# apt-get install php5-apc Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: php5-apc : Depends: php5-common (= 5.3.19-1~dotdeb.0) but 5.3.8-2 is to be installed E: Broken packages Have fresh Debian 6 and deb http://packages.dotdeb.org squeeze all deb-src http://packages.dotdeb.org squeeze all in source.list. P. S. I'm not very experienced—just trying to set up a server by the tutorial.

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• How to copy directories using debugfs?

  - by STM

  The debugfs manpage gives the impression that the command 'rdump . .' will recursively copy all files found on the specified filesystem from the debugfs cwd to the native filesystem's cwd. Instead I seem to receive a syntax error, and no copy is initiated? These are the commands I run: cd /path/to/transfer/destination debugfs /dev/sda1 -R rdump . . My task is to copy the entire contents of a clean yet unmountable USB storage device to its host machine's HD. The host machine does not support the inode size used by the USB device's filesystem (256) and its software is not upgradeable, so my intention was to use debugfs to transfer the files. If anyone has any other suggestions for this task I'd be grateful.

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• Why Automatically implemented properties must define both get and set accessors.

  - by Nasser Hajloo

  When we define a property like public string Name {get; set;} dot net can make our properties code. but when we use public string Name {get;} public string Name {set;} we face with 'Hajloo.SomeThing.PropertyName.set' must declare a body because it is not marked abstract or extern. Automatically implemented properties must define both get and set accessors. Actualy whay compiler can't determine the property and make code automatically ? what's happen ?

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• Cisco VPN and .pcf file

  - by yael

  I have few of profiles .pcf files , and I used them in order to automate the vpmclient connection VIA CLI command I have WIN XP server for example vpmclient connect "customor_alpha" until now everything is ok but I have problem with the last of my profiles - area1.pcf the problem is when I type in CMD window the following ( to create VPN connection ) vpmclient connect "area1" after 2 second CISCO window will pop up and ask for password , ( username already defined in window ) please advice what could be the problem , why I get the "CISCO PVN window" ? or maybe I have some in correct syntax in my .pcf file , I checked the .pcf file again and again and I couldn't find the problem ? example of area1.pcf ( only example - not my real pcf ) [main] Description=connection to TechPubs server Host=10.10.99.30 AuthType=1 GroupName=docusers GroupPwd= enc_GroupPwd=158E47893BDCD398BF863675204775622C49<SNIPPED> EnableISPConnect=0 ISPConnectType=0 ISPConnect= ISPCommand= Username=alice SaveUserPassword=0 UserPassword= enc_UserPassword= NTDomain= EnableBackup=1 BackupServer=Engineering1, Engineering2, Engineering 3, Engineering4 EnableMSLogon=0 MSLogonType=0 EnableNat=1 EnableLocalLAN=0 TunnelingMode=0 TCPTunnelingPort=10000 CertStore=0 CertName= CertPath= CertSubjectName SendCertChain=0 VerifyCertDN=CN=”ID Cert”,OU*”Cisco”,ISSUER-CN!=”Entrust”,ISSURE-OU!*”wonderland” DHGroup=2 PeerTimeOut=90 ForceNetLogin=

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• Dump output from REPL

  - by Ankit Soni

  I'm writing SML programs, and I'd like a way to quickly see the output from running a program in the REPL without actually running the REPL (to quickly see if a program has syntax errors - I plan to use this as a make program for .sml files in vim to view the output inside vim).. Currently, I have this: sml file.sml | echo -e "\004" So it runs the program, and then echoes Ctrl-D to exit the REPL. The problem is that its too quick to send the Ctrl-D key, so there is no output. I tried this too: sml file.sml | sleep 2 ; echo -e "\004" But that isn't doing it either. Any ideas on how I can get a dump of the output from the REPL?

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• Recommended boot partition size for Windows 7

  - by dwj

  I started using One Big Partition for everything and separating data out with folders when I got my current computer years ago. I'm preparing to upgrade my system from Windows XP to Windows 7 and I thought I might go back to putting my data on a separate partition. Most likely I'll just use the default OS install. My current Program Files tree has ~16 GB of stuff. Thinking ahead though, I've had XP installed for years. Who knows what apps I'm going to install down the line? This, of course, begs the question: How big do I make my Windows 7 install partition?

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• Advantage of using a static member function instead of an equivalent non-static member function?

  - by jonathanasdf

  I was wondering whether there's any advantages to using a static member function when there is a non-static equivalent. Will it result in faster execution (because of not having to care about all of the member variables), or maybe less use of memory (because of not being included in all instances)? Basically, the function I'm looking at is an utility function to rotate an integer array representing pixel colours an arbitrary number of degrees around an arbitrary centre point. It is placed in my abstract Bullet base class, since only the bullets will be using it and I didn't want the overhead of calling it in some utility class. It's a bit too long and used in every single derived bullet class, making it probably not a good idea to inline. How would you suggest I define this function? As a static member function of Bullet, of a non-static member function of Bullet, or maybe not as a member of Bullet but defined outside of the class in Bullet.h? What are the advantages and disadvantages of each?

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• CentOS 6.5 SVN https - Unknown DAV provider: svn

  - by Programster

  I am trying to setup a CentOS 6.5 64bit server with SVN over HTTPS. Unfortunately after configuring the /etc/httpd/conf.d/subversion.conf file as follows (changed paths): <Location /repos> DAV svn SVNParentPath /path/to/svn/repos # Limit write permission to list of valid users <LimitExcept GET PROPFIND OPTIONS REPORT> # Require SSL connection for password protection SSLRequireSSL AuthType Basic AuthName "Authorization Realm" AuthUserFile /path/to/passwdfile Require valid-user </LimitExcept> </Location> I get the following error message when restarting http: Starting httpd: Syntax error on line 3 of /etc/httpd/conf.d/subversion.conf: Unknown DAV provider: svn I have triple checked that I have the mod_dav_svn package already installed: Package mod_dav_svn-1.6.11-10.el6_5.x86_64 already installed and latest version Is my config wrong or are there other packages I need to set up?

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• Portable applications for phones?

  - by peoro

  What's the best way to write an application in order to get it working on the several phones out there (iPhone, symbian-based, xpPhone, and so on)? The idea I have in mind is that of writing a few interfaces to abstract from phone-dependent stuff (ie: some Input/Output interfaces), implementing such interfaces on the several phones and then writing an application that doesn't use any phone-dependent thing. But is this really possible? What would be the language I should choose for my interfaces and applications? (would love to use C++, hopefully even with GCC extensions) Is there any project that aims to offer what I need? (maybe something like SDL?)

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• Like Html.RenderAction() but without reinstantiating the controller object

  - by Jørn Schou-Rode

  I like to use the RenderAction extension method on the HtmlHelper object to render sidebars and the like in pages, as it allows me to keep the data access code for each such part in separate methods on the controller. Using an abstract controller base, I can define a default "sidebar strategy", which can then be refined by overriding the method in a concrete controller, when needed. The only "problem" I have with this approach, is that the RenderAction is built in a way where it always creates a news instance of the controller class, even when rendering actions from the controller already in action. Some of my controllers does some data lookup in their Initialize method, and using the RenderAction method in the view causes this to occur several times in the same request. Is there some alternative to RenderAction which will reuse the controller object if the action method to be invoked is on the same controller class as the "parent" action?

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• I would like to start multiple computers at once, What software do I use?

  - by Matt 'Trouble' Esse

  I have turned on Wake On Lan on all of the BIOSes in the PCs and I have a simple batch file that runs a free command wolcmd.exe Wake on Lan Command Line The syntax is as follows: wolcmd [mac address] [ip address] [subnet mask] [port number] The batch file looks a little like this.... wolcmd 009027a324fe 195.188.159.20 255.255.255.0 8900 wolcmd 009024a731da 212.86.64.31 255.255.255.0 8900 It's OK but It's not very user friendly (I need to set this up for other people to use and administer) Can you suggest a Windows (XP/Vixta/7) Alternative with a GUI? Free is cool, but a good paid for version is fine if you think it's worth it! Thanks in advance for your informed suggestions

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• Sharing a custom datasource between Winforms and Webforms

  - by Earlz

  Hello, I'd like to create a custom datasource that is shared between a Winforms and Webforms project. This functions as a middle layer for a reporting tool(DevExpress Reporting). The Webforms project is a designer for these reports. So we want for the reports to be capable of going to the server to get data and such. So our datasource would abstract away all the communication overhead. Then, for consistency, the datasource would also run on the server for reporting, except for their would be no communication. What would be the best course of action? There doesn't seem to be such a thing as a DataSource in Winforms. Is DataSource not the thing I'm looking for? Edit: After some research, it appears that IDataAdapter may be good for my purpose. Any opinion on that?

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• Ubuntu Server UFW NAT Issues

  - by William Fleming

  *nat :POSTROUTING ACCEPT [0:0] -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j MASQUERADE -A ufw-before-input -i tun0 -j ACCEPT -A ufw-before-output -i tun0 -j ACCEPT -A ufw-before-forward -s 10.8.0.0/24 -j ACCEPT -A ufw-before-forward -d 10.8.0.0/24 -j ACCEPT This input into my before.rules file stops me being able to ping the outside world. Before its fine i can ping google.co.uk after cant get out. Is there something wrong in my syntax here or what is the issue...? Im just trying to NAT my VPN so i can get internet access. Any thoughts would be greatly appreciated. Thanks William

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• Ubuntu - Create a link to a specified directory so I can easily change to that directory

  - by Denby

  Is it possible to create a symlink to a directory, like /var/lib/tomcat6/webapps/MyWar that I can access from everywhere? I want to be able to say cd myapp from anywhere in the directory tree and go to that directory. Is it only possible in the directory where I create the symlink? Do I have to update my ~/.bashrc file to include an alias like: alias myapp="cd /var/lib/tomcat6/webapps/MyWar" and then just type myapp from anywhere? What is the best way to handle this situation so I don't always have to type in the long directory? I also want to be able to use that parameter in say a copy command, so the alias wouldn't help in that situation. Hopefully I can do something similar where ~ maps to the home directory in any command.

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• Touch Screen Ubuntu 10.04LTS

  - by WalterJ89

  I'm trying to get a touch screen working with Ubuntu 10.04LTS (64bit) -it is a serial touchsceen, connected at /dev/ttyS0 ,i know that works because I get garbage in the terminal when I enable it. -before the screen used a 3m driver (I believe) in XP. My knowledge of Linux is passive so I generally pick up something when I need it. To get this working I came accross a lot of tutorials (a lot outdated a bit), I'm still at a loss to get this work. I'm not sure where to put linux drivers (/usr/ or /dev/?) most tutorials kind of skip over that part. I have tried editing the /etc/X11/xorg.conf unsuccessfully. I'm not sure what the syntax for that is supposed to be. Thank You

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• Did Acronis True Image Home 2012 clone operation "lock" my BitLocker disk?

  - by Thomas Eyde

  After trying to clone my primary drive, which requires a reboot to proceed, BitLocker detected that the boot sector had changed and required the recovery keys. Not a good situation to be in on Sunday evening when it is your IT-department who hold the keys. After talking with the guys at IT, I have tree suspects on why BitLocker locked me out: The newly added, second hard drive in my machine. The changed boot-order in BIOS. The changes True Image did in order to do its things on boot. As an end-user, I should never have to end up in situations like these without any warning. I would like to know what really happened, so I can inform Acronis on how they can improve their product to avoid this situation in the future.

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• Why is Mac OS X 10.6 using /usr/lib to start Apache when I compiled PHP using /opt/local/lib?

  - by Anthony

  PHP 5.3.3 compiled on Mac OS X 10.6 - using /usr/lib when trying to start Apache... rather than /opt/local/lib specified when PHP was configured. Why is it trying to load from /usr/lib when I specified in my configure not to? httpd: Syntax error on line 115 of /private/etc/apache2/httpd.conf: Cannot load /usr/libexec/apache2/libphp5.so into server: dlopen(/usr/libexec/apache2/libphp5.so, 10): Library not loaded: /opt/local/lib/libiconv.2.dylib\n Referenced from: /usr/libexec/apache2/libphp5.so\n Reason: Incompatible library version: libphp5.so requires version 8.0.0 or later, but libiconv.2.dylib provides version 7.0.0 The error message above refers to /opt/local/lib which when I run: otool -LD /opt/local/lib/libiconv.2.dylib Message: /opt/local/lib/libiconv.2.dylib: /opt/local/lib/libiconv.2.dylib (compatibility version 8.0.0, current version 8.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.0.0) It shows that the version is different than what httpd is erring out as. I have a feeling I need to recompile Apache using newer libraries, but the error message still doesn't make too much sense to me.

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• How to turn SSLCompression off in Apache 2.4.3?

  - by kumar

  I have installed Apache 2.4.3(OpenSSL 1.0.0j) on a machine and trying to do SSLCompression off in the ssl.conf file throws an error: Syntax error on line 219 of /etc/httpd/conf.d/ssl.conf: Invalid command 'SSLCompression', perhaps misspelled or defined by a module not included in the server configuration What could be wrong here? If it helps, I installed mod_ssl(2.4). Is that enough or is something more to be done to configure Apache with mod_ssl. I tried phpinfo() in php, and mod_ssl is reflected in the Loaded Modules section.

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• prevent apt dependency from being satisfied (permanently)

  - by Bryan Hunt

  I want to install mailman (just to use it's mail archiving feature) but Ubuntu wants to pull down a load of extra dependencies. sudo apt-get install mailman Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: apache2 apache2-mpm-worker apache2.2-common Suggested packages: apache2-doc apache2-suexec apache2-suexec-custom spamassassin lynx listadmin Is there any way to mark those packages ( apache2 apache2-mpm-worker apache2.2-common ) as never to be installed? This is not 2002 ;)

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• Django loaddata throws ValidationError: [u'Enter a valid date in YYYY-MM-DD format.'] on null=true f

  - by datakid

  When I run: django-admin.py loaddata ../data/library_authors.json the error is: ... ValidationError: [u'Enter a valid date in YYYY-MM-DD format.'] The model: class Writer(models.Model): first = models.CharField(u'First Name', max_length=30) other = models.CharField(u'Other Names', max_length=30, blank=True) last = models.CharField(u'Last Name', max_length=30) dob = models.DateField(u'Date of Birth', blank=True, null=True) class Meta: abstract = True ordering = ['last'] unique_together = ("first", "last") class Author(Writer): language = models.CharField(max_length=20, choices=LANGUAGES, blank=True) class Meta: verbose_name = 'Author' verbose_name_plural = 'Authors' Note that the dob DateField has blank=True, null=True The json file has structure: [ { "pk": 1, "model": "books.author", "fields": { "dob": "", "other": "", "last": "Carey", "language": "", "first": "Peter" } }, { "pk": 3, "model": "books.author", "fields": { "dob": "", "other": "", "last": "Brown", "language": "", "first": "Carter" } } ] The backing mysql database has the relevent date field in the relevant table set to NULL as default and Null? = YES. Any ideas on what I'm doing wrong or how I can get loaddata to accept null date values?

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• Domain Driven Design And The Entity Framework

  - by Hossein

  hi, I'm new to DDD and i want to use entity framework v4.0 (shipped with .net 4.0) in my new project. since i have few time to learn DDD and entity framework, which books are good for me to read first?! i'm going to first read Domain-Driven Design Tackling Complexity in the Heart of Software by Eric Evan and next Pro Entity Framework 4.0 (Apress Scott Klein)... the problem here is Eric Evan's book is too abstract,I want to know if the Pro Entity framework 4.0 is complete enough i just skip the first book! in the end recommend me some good books in DDD and Entity Framework Thanks

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• How to resolve 'Error Dependency is not satisfiable: libascound2' on ubuntu

  - by michael

  Hi, I am trying to install skype-ubuntu-intrepid_2.1.0.91-1.i386.deb on ubuntu 8.04: But in the Package installer, I get 'Error Dependency is not satisfiable: libascound2'. And I have tried. $ sudo apt-get install libasound2 [sudo] password for novarra: Reading package lists... Done Building dependency tree Reading state information... Done libasound2 is already the newest version. The following packages were automatically installed and are no longer required: linux-headers-2.6.24-24-generic libdns35 linux-headers-2.6.24-24 Use 'apt-get autoremove' to remove them. I appreciate if anyone can help me with it.

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• How to get Firefox Greasemonkey script to use a local cascading stylesheet?

  - by Umber Ferrule

  What's the correct syntax to link to a CSS file in the same directory as a Greasemonkey JavaScript? I've tried the following but it doesn't work: var cssNode = document.createElement('link'); cssNode.type = 'text/css'; cssNode.rel = 'stylesheet'; cssNode.href = 'example.css'; cssNode.media = 'screen'; cssNode.title = 'dynamicLoadedSheet'; document.getElementsByTagName("head")[0].appendChild(cssNode); If I can get this to work, it would be a lot easier than encasing CSS changes in JavaScript.

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• How can I install a headless JDK on an Ubuntu Jaunty server?

  - by Hanno Fietz

  I recently set up a build server that requires a JDK to run (for example, to compile the Java sources). The OpenJDK package in Ubuntu pulls in the OpenJDK JRE as a dependency which, in turn, depends on a large number of packages that are only relevant for graphical environments. For the standard JRE, there's a headless version of the package, but for the JDK, no. This issue has been discussed in various places before, and one solution that I found and used was this: $ apt-get --no-install-recommends -d install openjdk-6-jdk $ dpkg -i --ignore-depends=openjdk-6-jre /path/to/just-downloaded.deb While this worked, it now leaves my system with a broken dependency tree and apt-get refuses further installs untill I run apt-get -f. Is there a better solution to this?

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