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• What packages are safe to uninstall to reduce installation size?

  - by mathematician1975

  This question is similar to a previous question I asked How can I turn my desktop Ubuntu 8.04 into a command line only install?. I was wondering if anyone can recommend any other bulky packages from the standard 8.04 installation that can reduce the size on disk of my installation. All I really require is socket functionality, g++ and gcc, some kind of text editor and SSH client and server. Things that I don't require are things like media players, audio packages, and the more "superficial" kind of desktop niceties. Is there anything particularly large in a standard install that is safe for me to remove without compromising my requirements above? I am a bit apprehensive about trying to uninstall items and I am not totally confident about removal of particular things having a negative effect on the functionality of any other things I might need (an example is would it be safe for me to remove everything to do with Perl, or does the system/kernel/other processes require this) ??? Basically I would like to be left with the kind of items that would have been installed in the CLI version of 8.04 (had the alternative iso image not been faulty). Any help/suggestions would be gratefully received.

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• phpmyadmin error #2002 cannot connect to mysql server

  - by Joe

  so i am getting this error when trying to connect to my mysql server. i have reinstalled MYSQL and php several times and tried a slew of command line work from info around the web.mysql is running and i know that my mysql.sock exists and is located in ~/private/tmp/ and also in ~/tmp/. i also have plenty of hard drive space. i have installed and setup phpmyadmin correctly only adding a password to 'Password for config auth'. AND i have connected to the server via Sequel Pro. so my question is what the heck is going on that i can't connect to the server via phpmyadmin? any guesses? also i'm on a 64-bit intel mac running snow leopard

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• Unix file permission for groups

  - by GOPI

  I am working on HP Unix server. I have a directory in which users from different groups need to create files. And the users of a same group should have complete access to the files created by their group and only read access for the files created by other groups. I tried to set sticky bit for the directory thereby to restrict access for other groups. But I face the following problem. Created File1 from user1 of GroupA. When I tried to execute the 'rm' command from user2 of the same group GroupA, it doesn't allow as user2 is not the owner of the file. can setgid (at directory level) or other command help me to sort this issue?

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• How to fix incorrect margins when printing from Windows 7?

  - by Rodrigo Guerreiro

  My printer is a HP Photosmart 2575. When I print from my Windows XP the margins are all ok, but when I print from my Windows 7 laptop the top margin is 2x larger for the same document, and as a result the bottom is cropped. I've already found one (http://h30434.www3.hp.com/t5/Printer-All-in-One-Software-and/Deskjet-5150-printer-incorrect-margins-with-Vista-64-bit/td-p/103166) thread in HP forums from someone that seems to have the same problem than me, but no solution is provided. My Windows 7 is the Home Premium x64. Can anyone help me?

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• Object desing problem for simple school application

  - by Aragornx

  I want to create simple school application that provides grades,notes,presence,etc. for students,teachers and parents. I'm trying to design objects for this problem and I'm little bit confused - because I'm not very experienced in class designing. Some of my present objects are : class PersonalData() { private String name; private String surename; private Calendar dateOfBirth; [...] } class Person { private PersonalData personalData; } class User extends Person { private String login; private char[] password; } class Student extends Person { private ArrayList<Counselor> counselors = new ArrayList<>(); } class Counselor extends Person { private ArrayList<Student> children = new ArrayList<>(); } class Teacher extends Person { private ArrayList<ChoolClass> schoolClasses = new ArrayList<>(); private ArrayList<Subject> subjects = new ArrayList<>(); } This is of course a general idea. But I'm sure it's not the best way. For example I want that one person could be a Teacher and also a Parent(Counselor) and present approach makes me to have two Person objects. I want that user after successful logging in get all roles that it has (Student or Teacher or (Teacher & Parent) ). I think I should make and use some interfaces but I'm not sure how to do this right. Maybe like this: interface Role { } interface TeacherRole implements Role { void addGrade( Student student, Grade grade, [...] ); } class Teacher implements TeacherRole { private Person person; [...] } class User extends Person{ ArrayList<Role> roles = new ArrayList<>(); } Please if anyone could help me to make this right or maybe just point me to some literature/article that covers practical objects design.

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• State Changes in a Component Based Architecture [closed]

  - by Maxem

  I'm currently working on a game and using the naive component based architecture thingie (Entities are a bag of components, entity.Update() calls Update on each updateable component), while the addition of new features is really simple, it makes a few things really difficult: a) multithreading / currency b) networking c) unit testing. Multithreading / Concurrency is difficult because I basically have to do poor mans concurrency (running the entity updates in separate threads while locking only stuff that crashes (like lists) and ignoring the staleness of read state (some states are already updated, others aren't)) Networking: There are no explicit state changes that I could efficiently push over the net. Unit testing: All updates may or may not conflict, so automated testing is at least awkward. I was thinking about these issues a bit and would like your input on these changes / idea: Switch from the naive cba to a cba with sub systems that work on lists of components Make all state changes explicit Combine 1 and 2 :p Example world update: statePostProcessing.Wait() // ensure that post processing has finished Apply(postProcessedState) state = new StateBag() Concurrently( () => LifeCycleSubSystem.Update(state), // populates the state bag () => MovementSubSystem.Update(state), // populates the state bag .... }) statePostProcessing = Future(() => PostProcess(state)) statePostProcessing.Start() // Tick is finished, the post processing happens in the background So basically the changes are (consistently) based on the data for the last tick; the post processing can a) generate network packages and b) fix conflicts / remove useless changes (example: entity has been destroyed - ignore movement etc.). EDIT: To clarify the granularity of the state changes: If I save these post processed state bags and apply them to an empty world, I see exactly what has happened in the game these state bags originated from - "Free" replay capability. EDIT2: I guess I should have used the term Event instead of State Change and point out that I kind of want to use the Event Sourcing pattern

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• Video has become blurred and smoothed out?!

  - by benwebdev

  Hi, Since yesterday video and graphics on my Windows 7 desktop seem to have become smoothed out and blurred slightly and I'm not sure why. The last thing I did on the machine was play Fallout New Vegas for the first time. An example can be seen in the picture here screenshot - note how smoothed out the character on the right seems, lots of definition looks lost. It's really annoying and happening regardless of what I watch. My system is below: Windows7 Ultimate 64 bit 6GB RAM Sapphire HD 5770 Vapor-X 1GB Gigabyte X58A-UD3R Motherboard Coolermaster Silent Pro M series 700W power supply All help greatly appreciated thanks

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• XAMPP on windows 7 not working

  - by 404Error

  Hey there, I just installed XAMPP lite on Windows 7. I have two drives - C: for the OS and regular files, and an external drive E:. I insatlled XAMPP lite on E: (on the root), and its been giving me problems. Apache works well enough, but MySQL doesn't work. When I go to http://localhost/phpmyadmin/, it gives me the following error: Error MySQL said: #2003 - Can't connect to MySQL server on 'localhost' (10061) Connection for controluser as defined in your configuration failed. Any ideas as to what could be the problem? I used the zip file for XAMPP lite, the 32 bit version. This is on Windows 7 Home premium. Thanks!

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• Data Access Objects old fashioned? [on hold]

  - by Bono

  A couple of weeks ago I delivered some work for a university project. After a code review with some teachers I got some snarky remarks about the fact that I was (still) using Data Access Objects. The teacher in question who said this mentions the use of DAO's in his classes and always says something along the lines of "Back then we always used DAO's". He's a big fan of Object Relational Mapping, which I also think is a great tool. When I was talking about this with some of my fellow students, they also mentioned that they prefer the use of ORM, which I can understand. It did make me wonder though, is using DAO's really so old fashioned? I know that at my work DAO's are still being used, but this is due to the fact that some of the code is rather old and therefor can't be coupled with ORM. We also do use ORM at my work. Trying to find some more information on Google or Stack Exchange sites didn't really enlighten me. Should I step away from the use of DAO's and only start implementing ORM? I just feel that ORM's can be a bit overkill for some simple projects. I'd love to hear your opinions (or facts) about this.

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• How to start a cmd window and issue tail request in a bat file?

  - by Kari

  I can open a cmd window and start a tail by entering something like this: tail -f C:\Oracle\WebCenter\Sites\11gR1\Sites\11.1.1.6.1\logs\sites.log This is probably a stupid question, but how do I do this in a batch file? It should be easy but it's not working - I have tried a couple variations and no success. Can anyone tell me what I am doing wrong here? ECHO OFF CD C:\Oracle\WebCenter\Sites\11gR1\Sites\11.1.1.6.1\logs\ cmd tail -f sites.log I've also tried: ECHO OFF start cmd tail -f C:\Oracle\WebCenter\Sites\11gR1\Sites\11.1.1.6.1\logs\sites.log (am using Win7 Ultimate, on a 64-bit machine, if that has any bearing)

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• how to skip grub dual boot option menu entirely (without picking an OS to boot)

  - by bevcan izBevk

  I'd like to skip the entire Grub 2 interface, where I have to decide booting Linux or Windows im running linux ubuntu lastest version (14.04.1 LTS) and windows 8.1 both 64 bit versions. I've installed easyBCD software, which I want to use as (my only) boot manager. Issue: whenever I run my computer, I get grub interface to pick Linux or Windows, after that I get easyBCD interface where I have to pick linux or windows again. If both choices are the same, proper system boots, else I get thrown back to beggining (grub UI). I'd like to somehow delete / skip grub from appearing. TLDR title :) thank you for helping!

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• Combinatorial explosion of interfaces: How many is too many?

  - by mga

  I'm a relative newcomer to OOP, and I'm having a bit of trouble creating good designs when it comes to interfaces. Consider a class A with N public methods. There are a number of other classes, B, C, ..., each of which interacts with A in a different way, that is, accesses some subset (<= N) of A's methods. The maximum degree of encapsulation is achieved by implementing an interface of A for each other class, i.e. AInterfaceForB, AInterfaceForC, etc. However, if B, C, ... etc. also interact with A and with each other, then there will be a combinatorial explosion of interfaces (a maximum of n(n-1), to be precise), and the benefit of encapsulation becomes outweighed by a code-bloat. What is the best practice in this scenario? Is the whole idea of restricting access to a class's public functions in different ways for other different classes just silly altogether? One could imagine a language that explicitly allows for this sort of encapsulation (e.g. instead of declaring a function public, one could specify exactly which classes it is visible to); Since this is not a feature of C++, maybe it's misguided to try to do it through the back door with interaces?

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• Do I need to reserve space before installing Ubuntu alongside Windows 7?

  - by CRM Junkie

  I had Windows 7 32 bit on my existing system, but I am planning to install Ubuntu alongside it. So, I just decided to do a fresh installation of both the operating systems. When I insert the Windows 7 DVD, I can create 3 partitions at maximum, with one being the one where Windows 7 will be installed. I just wanted to know – do I need to keep some un-partitioned space for Ubuntu to install? By "unpartitioned space" I mean the space left after creating 3 partitions for Windows 7. I have a 500 GB HDD, so the three partitions I would be creating are 120 GB, 120 GB and 120 GB. The rest is shown as some logical drive, is that unpartitioned space? Can I install Ubuntu over there? I am pretty sure the space shown as logical won't be available as drives when I log into Windows 7. Is that space lost or can I use that to install ubuntu?

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• Laptop forgets second monitor when it goes to sleep

  - by al c

  I recently updated my nvidia driver... now I have to re-establish the connection to my second monitor everytime the laptop goes to sleep. When I open the NVIDIA control panel, the second monitor is listed there but the checkbox beside it has been cleared. Oddly my laptop screen is identified as display #3 and the external screen as display #4. Is there a registry key that I can clear to get them set back to #1 & #2? Will that fix the problem? Or is there a simpler solution. (It's a Dell Studio XPS laptop with GeForce 9500M running Windows Vista 64-bit) TIA Al

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• Swappable hard-drives for laptop

  - by lacqui

  I am bringing my old laptop for recycling, and removed my hard drive beforehand. The drive is a 320GB SATA drive, which is the same as my current laptop's drive. I would like to be able to easily swap between the two drives, in order to dual-boot that way. My laptop (Toshiba Satellite A500) needs a tiny Philip's screwdriver to get at the hard drive bay. I would like to replace that with something that is more easily changed, while still allowing the hard drive to rest on the desk. It can stick out a bit due to the laptop's feet, but not too far.

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• Should I be using Windows Live Mail or Outlook?

  - by Relequestual

  I have been using Windows Live Mail now for a few years, and like the interface, ect ect. Just having a clear out of my domains emails, and think I should set up the other accounts properly. I have Outlook (using 2010 beta), so I thought maybe I should use it? Can anyone give me reasons for and against both bits of software? I did look for some comparisons between the two, but can't find much. Plus I always value up to date information. Bit more background: Using 1 Hotmail and 5 IMAP accounts (possibly more). Use a Windows Mobile. Any way I can sync the calendar and tasks OTA to my hotmail and back down to outlook? I know this is probably more a discussion question (sorry), but I would argue that it can be answered, as it is a question relating to what I myself, in my circumstances would be best. Thanks in advance. Rel

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• How to monitor Windows Server events with Centreon Nagios

  - by Miss M

  I want to monitor events on a Windows Exchange Server (Windows 2008 R2) and have installed NSclient ++ so I can use Centreon Nagios to monitor it. I did a bit of research and came across this question that I found somewhat helpful: How to monitor Windows host with Nagios? Nick Kavadias gave a good answer but it did not provide an explanation on how to configure the Nagios config file in such a way that it would monitor a specific service on the server. So, how do I set up a service in Nagios in such a way that it will detect when a windows event occurs on a server?

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• User for Public Network

  - by user71604

  my computer can catch the signal for many Access Points for the same network, while the network has problem with internet connection in some APs and it's working in others "all APs have the same SSID" Please advice if as i user i can force my computer to connect with specific AP neither than to go with the one with higher power (through MAC adress or IP)?. I am sure that my computer catch more than 10 signals for APs"All with same SSID". I am using windows 7 home primume 64 bit. as a user i dont have access to the AP config.

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• how to set global PATH on OS X?

  - by lajos

  I'd like to append to the global PATH variable on OS X so that all user shells and GUI applications get the same PATH environment. I know I can append to the path in shell startup scripts, but those settings are not inherited by GUI applications. The only way I found so far is to redefine the PATH environment variable in /etc/launchd.conf: setenv PATH /usr/bin:/bin:/usr/sbin:/sbin:/my/path I coulnd't figure out a way to actually append to PATH in launchd.conf. I'm a bit worried about this method, but so far this is the only thing that works. Does anyone know of a better way?

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• Automating the installation using SSH

  - by RAY

  I am running a bash script from a remote host to run a binary file which installs 64 bit JDK 6 update 29 on multiple VMs across the Environment. It is installing the file but, at the last line i have to hit a enter to complete the installation. I want to fully automate the script where i do not have to hit the enter at the last line. This is what i am using ssh ${V_TIERS}@${V_TIERS} 'cd JDK; sh jdk-6u29-solaris-sparcv9.sh' It updates as desired, but during install i have to hit enter to continue and complete the installation. Can anybody please help to fully automate the update process.

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• Changing location in Google Chrome when searching

  - by Alex

  I've recently moved to the Czech Republic from Scotland and I can't find a way to permanently stop Google from automatically defaulting back to google.cz all the time. I've checked to ensure that all my google accounts and cookie based settings (e.g. Advanced Search Options) are set to English but it's still clearly doing an IP address lookup and disregarding everything else. The default Search Engine for Google Chrome (and switches to google.cz automatically): {google:baseURL}search?{google:RLZ}{google:acceptedSuggestion}{google:originalQueryForSuggestion}sourceid=chrome&ie={inputEncoding}&q=%s I've tried hardcoding it to: http://www.google.com/search?{google:RLZ}{google:acceptedSuggestion}{google:originalQueryForSuggestion}sourceid=chrome&ie={inputEncoding}&q=%s this kind of works, but won't work for inline searching, i.e. I always have to press enter in order to get any results which is a bit annoying as I've gotten so used to AJAX style searching I can't have been the only one to get this issue? Any help is appreciated

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• How to give write permissions to multiple users?

  - by Daniel Rikowski

  I have a web server and I'm uploading files using an FTP client. Because of that the owner and the group of the file are taken from the user used during the upload. Now I have to make this file writable by the web server (apache/apache). One way would be to just change the owner and the group of the uploaded file to apache/apache, but that way I cannot modify the file using the FTP account. Another way would be to give the file 777 permissions. Both approaches seem not very professional and a little bit risky. Are there any other options? In Windows I can just add another user to the file. Can something similar done with Linux?

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• Can I use my Belkin router as a repeater?

  - by Kyle R

  I've got a brand new, unopened Belkin N600 DB router (yay 50% off sale), and I can't seem to figure out if I can use it as a repeater. As far as I can tell, it doesn't support DD-WRT or Tomato, but I'm wondering if there may be some way to rig it up to repeat Wifi. Also, I really need to know before I open it, because, being a bit tight on money at the moment, I'll probably sell it if I can't use it as a repeater. Finally, two caveats: I can't use the other wireless router for anything other than broadcasting straight from the modem (parents are paranoid about anything technological). I can't run ethernet to the second router due to the layout of the house. Thanks so much for the help everyone--if I'm being vague, tell me! EDIT: Also, the manual here is pretty useless on this topic as far as I can tell.

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• Why does Resource Monitor in windows 7 show half my memory as "Hardware Reserved"?

  - by Brandon

  Does anyone know why in Windows 7 Resource Monitor shows that I have 8 GB of RAM installed on my computer, but I only have 3.2 GB available as 4.8 GB are in "Hardware Reserve". I researched this issue and tried going into msconfig and making sure that in the boot options the number of processors and max memory options were turned off. I also opened the computer up and reseated each of the memory sticks while clearing out any dust that was in there. Some info on the system I am using: OS: Windows 7 Enterprise 64-bit Edition CPU: AMD Phenom X4 9750 Memory: 4 X 2GB DDR2 memory Motherboard: MS-7548 (Aspen) Any help would be much appreciated.

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• Files in /home deleted

  - by long-time user....2006

  In the most specific, unemotional terms: Reinstalled os, using 11.10(1 month after release to skip initial issues that usually crop up). Configured system to my specifications(just ways of organizing config files, etc). Log out Log back in after after an hour or so...to find my home directory obliterated and just a few skeleton files existing. think oh well, try again (this has happened before with an install for reasons I've never been able to pinpoint, usually around install time with some sort of update but its never been a major recurring issue) same thing happens I thought something was awry, so I reinstalled again (another 20 minutes, meh) Set up system, arranged home directory a bit differently thinking maybe I tread on something I shouldn't have. log out, come back --- the same thing. Most of the directories I added were deleted (e.g. .xmonad which links to xmonad.hs in my portable config directory) tl;dr every change I make in my home directory gets deleted. The emotional part: UNACCEPTABLE. I need to configure my system the way I want, not get punched in the face everytime I make a change. I'll willingly fill in details as needed, this was just a start to see if anyone can help, I've found no trace of this issue in a search.

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