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• Windows 7 Blank Screen on Boot / Login

  - by Greg

  I have a new system that's having a few problems... sometimes (seems to be when the PC is cold, i.e. has been switched off for a while, though that could be my imagination) I get a blank blue screen when I boot up. The system boots normally and auto-logs-in. The desktop loads and I'm even able to launch applications, but then everything disappears and the screen goes to the default windows desktop blue colour (not the desktop image, just a plain blue with no mouse cursor). At this point the machine completely locks up - I'm unable to even toggle Num Lock and have to hold in the power button for 5 seconds to kill it. Interestingly if I manage to launch some applications before it goes blank, they will usually crash... sometimes explorer.exe will crash too. When I reboot, the system is fine and stable. I've installed the latest graphics drivers and run memtest86+ for 6 passes (and counting) with no errors. The system specs are: CPU: Intel I7 2.66 @ 3.4GHz RAM: 6GB (3 * 2GB DDR3) HDD: 128GB Crucial M225 SSD Motherboard: Gigabyte EX58-UD3R Gfx: ATI Radeon Sapphire 5870 1GB Note: There are a few similar questions but I haven't found one that matches my symptoms

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• 404 not found error for virtual host

  - by qubit

  Hello, In my /etc/apache2/sites-enabled, i have a file site2.com.conf, which defines a virtual host as follows : <VirtualHost *:80> ServerAdmin hostmaster@wharfage ServerName site2.com ServerAlias www.site2.com site2.com DirectoryIndex index.html index.htm index.php DocumentRoot /var/www LogLevel debug ErrorLog /var/log/apache2/site2_error.log CustomLog /var/log/apache2/site2_access.log combined ServerSignature Off <Location /> Options -Indexes </Location> Alias /favicon.ico /srv/site2/static/favicon.ico Alias /static /srv/site2/static # Alias /media /usr/local/lib/python2.5/site-packages/django/contrib/admin/media Alias /admin/media /var/lib/python-support/python2.5/django/contrib/admin/media WSGIScriptAlias / /srv/site2/wsgi/django.wsgi WSGIDaemonProcess site2 user=samj group=samj processes=1 threads=10 WSGIProcessGroup site2 </VirtualHost> I do the following to enable the site : 1) In /etc/apache2/sites-enabled, i run the command a2ensite site2.com.conf 2) I then get a message site successfully enabled, and then i run the command /etc/init.d/apache2 reload. But, if i navigate to www.site2.com, i get 404 not found. I do have an index.html in /var/www (permissions:777 and ownership www-data:www-data), and i have also verified that a symlink was created for site2.com.conf in /etc/apache2/sites-enabled. Any way to fix this ? Thank you.

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• Is It Possible To Self-Teach PHP, Wordpress, CentOS (Linux), Apache, Nginx etc?

  - by Aahan

  consider me a total noob, who uses a Windows PC and has never touched Linux. But I want to administer, manage and take responsibility of my server, at least at some point, if not now. But since I am a full-time blogger I am unable to find time to study at an institute. So, here is my question — - Is It Possible To Self-Teach HTML, CSS, PHP, JavaScript, Wordpress, CentOS (or for that matter any Linux distro), Apache, Nginx, and Varnish? Yes, beginning with HTML, absolutely all of them. I might seem overly ambitious and foolish, but I just want to do it. Aren't there any self-taught server admins? (1) Please help me out with the names of good books, links and whatever you can. (2) How long would it take me to get there (approximately)? 3 years? 5 years? (I have good touch with HTML & Wordpress.) This is a great community, I hope at least some of you will shoot some suggestions at me.

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• How to connect to DB2 when the password ends with '!' in Windows

  - by AngocA

  I am facing a problem to use the DB2 tools when using generic account with a generated password which ends with the Bang sign '!' to connect to DB2 database. I am not allowed to change the password because it is already used by other processes. I know the user is valid and I can connect to the database with its credentials, but not from all db2 tools. When using the Control Center it is okay. When using the Command Editor (GUI) or the Command Windows, I got this error message: connect to WAREHOUS user administrator using ! SQL0104N An unexpected token "!" was found following "<identifier>". Expected tokens may include: "NEW". SQLSTATE=42601 Let's say that my password is: pass@! I am trying to use c:\>db2 connect to sample user administrator using "pass@!" or c:\>db2 connect to sample user administrator using pass@! And it both cases I got the same error message. I could change the way I connect but it is not useful for me, for example: c:\>db2 connect to sample user administrator Enter current password for administrator: But I cannot use it from a batch file easily. I would like to know how can I connect from the Command Editor, in order to use this user from the Graphical Tools. BTW, I know that the Control Center is deprecated.

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• All of the NTFS hard links damaged, where are hardlinks stored and how to recover them?

  - by String Xu

  This is Windows 7 x64 sp1 on a NTFS file system. All hardlinks within C:\Windows\System32 folder disappear, and the Windows can't boot, because even the osloader, C:\Windows\System32\boot\Winload.exe also disappeared. Nevertheless, the original files are still located in the corresponding C:\Windows\winsxs folders. After booting into the Recovery Environment, and copied one Winload.exe (x64) from other folder, Windows gave an error pointing out that "ntoskrnl.exe is corrupted or missing...its file digital signature cannot be verified" In trying to boot in Safe Mode, the message above was shown after a screen prompting "Loaded \Windows\system32\config\system" Because at this early booting stage, smss.exe was still not loaded, so there is not any dumping and logs. Based on my study, ntoskrnl.exe depends on the following files: C:\windows\system32\PSHED.DLL C:\Windows\System32\hal.dll C:\Windows\System32\kdcom.dll C:\Windows\System32\clfs.sys C:\Windows\System32\ci.dll All those files above are copied from their corresponding folders and verified their md5 with a well-operating Windows 7 x64 SP1. But the booting error is still the same: "ntoskrnl.exe is corrupted or missing..." Background: 1. Before the reboot, there was an windows update going on. Then something unknown happen, almost all processes were broken to run, including the windows task manager, taskmgr.exe. After mount the hard disk to other computer, it seems that all hardlinks within C:\Windows\System32 folder were gone. I tried several data recovery software, but they are not be able to find those disappeared NTFS hard links. So the question is: Where are information about those hard links stored? And how to recover them? Are they depend on some windows service or stored in the registry?

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• How do you set max execution time of PHP's CLI component?

  - by cwd

  How do you set max execution time of PHP's CLI component? I have a CLI script that has gone into a infinite loop and I'm not sure how to kill it without restarting. I used quicksilver to launch it, so I can't press control+c at the command line. I tried running ps -A (show all processes) but php is not showing up in that list, so perhaps it has timed out on it's own - but how do you manually set the time limit? I tried to find information about where I should set the max_execution_time setting, I'm used to setting this for the version of PHP that runs with apache, but I have no idea where to set it for the version of PHP that lives in /usr/bin. I did see the follow quote, which does seem to be accurate (see screenshot below), but having an unlimited execution time doesn't seem like a good idea. Keep in mind that for CLI SAPI max_execution_time is hardcoded to 0. So it seems to be changed by ini_set or set_time_limit but it isn't, actually. The only references I've found to this strange decision are deep in bugtracker (http://bugs.php.net/37306) and in php.ini (comments for 'max_execution_time' directive). (via http://php.net/manual/en/function.set-time-limit.php) ini_set('max_execution_time') has no effect. I also tried the same thing and go the same result with set_time_limit(7).

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• Sharing between Vista and Windows 7

  - by Metro Smurf

  Vista Ultimate 32 bit Windows 7 Ultimate 64 bit I've read through similar questions about sharing between Win7 and Vista, but none of them have resolved my issue of not being able to share between Win7 and Vista: Connecting to a Vista shared folder from Windows 7 Networking Windows 7 and Vista Enable File sharing in Windows Vista Previously I had previously had my Vista and XP system sharing back and forth without any problems. I was able to access the shares without entering a user name / password in the NT challenge prompt (note: account names and passwords were different on the Vista and XP systems). Currently I replaced my XP system with a Win7 system. Now, when I attempt to access shares to/from Vista / Win7, I am continually prompted with an NT challenge to enter my credentials. Things I've Verified/Tried Both systems are on the same workgroup. Win 7 is using the Home network. Vista is using the Private network. In other words, neither system is using a Public network profile. Enabled file sharing with and without password protection on both Vista and Win7 Tried HomeGroup Connections (win7) with Windows to manage connections and Use user accounts to connect. Reviewed too many online articles to count to trouble shoot. Set the shares to have full control by everyone. Set up the shares directly on the directory and through the share manager. My Question How can I enable file sharing between Vista and Win7 without being prompted with a username/password challenge, ever?

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• How do I get started with the M-Project is a Mobile HTML5 JavaScript Framework on Windows?

  - by Bruce Whealton

  This website for this great tool, call the M-Project says that I will need to add a doskey like this: doskey espresso=node C:\Path\To\Espresso\bin\espresso.js $1 $2 $3 $4 (It is a tool for creating Native mobile apps with the Phonegap/Cordova library, and it seems to be something that would be very helpful in this process). If I enter that at a command prompt in Windows 7 or 8, it's not going to stick around or persist. Is it an Environment Variable? Then it says at this page: http://www.the-m-project.org/ that it will work with Windows with some additional tools installed. The next line says that Node.js is needed, so I don't know if that is the additional tools mentioned above. Also, in an old discussion I read that one could just install cygwin. What would that do? It doesn't actually install any of the Linux distributions. I did install Ubuntu 12.04 server with VirtualBox because I thought it would be good to learn more about using Linux as I manage websites that are on a dedicated host. Anyway, the suggestion to install cygwin did not go into any details... I guess it would allow one to create a bash profile?? which would only work in a cygwin Command Line Window. Is that right? Isn't there a similar file that one could use in Windows or an Environment Variable that one could set to be able to achieve the same result? Thanks, Bruce

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• Is it okay to use an administrator account for everyday use if UAC is on?

  - by Valentin Radu

  Since I switched to Windows 7 about 3 years ago, and now using Windows 8.1, I have become familiar with the concept of User Account Control and used my PC the following way: a standard account which I use for every day work and the built-in Administrator account activated and used only to elevate processes when they request so, or to ”Run as administrator” applications when I need to. However, recently after reading more about User Account Control, I started wondering if my way of working is good? Or should I use an administrator account for every day work, since an administrator account is not elevated until requested by apps, or until I request so via the ”Run as administrator” option? I am asking this because I read somewhere that the built-in Administrator account is a true administrator, by which I mean UAC doesn't pop up when logged in within it, and I am scared of not having problems when potential malicious software come into scene. I have to mention that I do not use it on a daily basis, just when I need to elevate some apps. I barely log in into it 10 times a year... So, how's better? Thanks for your answers! And Happy New Year, of course! P.S. I asked this a year ago (:P) and I think I should reiterate it: is an administrator account as safe these days as a standard account coupled with the built-in Administrator account when needed?

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• How to implement a virtual server running Ubuntu inside a fileserver in windows?

  - by user541445

  I work in a company that has some limitations regarding their budget. They need client/server aplication. I can code the aplication, I've made mini tests on primordial applications that work. The thing is that they only have fileservers, and the application they need must be concurrent compliant, so the database must be in their local network (Fileserver is the only choice). So far, I have explored almost any option available, starting with: Desktop databases. Access (We have a license)(But concurreny is just not effective, besides it's a windows software, yuck). Sqlite (Nice, but since the information they manage is a lot, I've performed some concurrency tests with INSERTs and doing SELECTS at the same time). It fails, somehow it just stops inserting. Open office Base (I dismember a base office only to see that it was a file mode HSQLDB). I've tried, not concurrent at all. Etc (You name the Open source Desktop Database manager, and yes, I've tried that one.) Server databases Call me a stubborn person, but reading some server databases documentation say that their databases will work in a file mode. I've tried a lot of products. Postgres, MySQL, FireBird, H2, Derby, Oracle Express, IBM DB2 Express, etc. So, I really need a hand here, I've been doing this install/delete/depression thing with a lot of databases for 3 weeks, until I got with a crazy idea and I just came here to express it. So, my question comes down to this: Installing a light virtual OS software like Virtual PC and then installing in there a Server OS like an Ubuntu server inside that virtual software will work? Will it work 24/7 or when I close the virtual pc software? Will this work in a fileserver? Any suggestion, answer, critic to the place I work, crazy new concurrent database that will work in fileserver will be most than welcome.

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• How to setup Joomla CMS as a backend for iPhone app

  - by srik

  I would like my iPhone app to get dynamic content off the net. This content should be managed using a CMS. I have gone ahead and installed Joomla on my server and will be using the Joomla web interface to create and manage content. I would now like the iPhone app to login to my server and fetch the content. I do not want the complete web pages for my iPhone app. Instead, I want the content in the form of XML or JSON or some serialized format so that I can use the data in a custom layout native to the app. So I am looking for 2 things in particular: 1. How to setup HTTP based authentication for my iPhone app to access data from my server. 2. How to access the content in a serialized format (XML, JSON etc) Are there plugins/extensions/components I can use to achieve the same. Any advice on how this can be achieved would be helpful. I am completely new to setting up/using CMS.

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• How to setup Joomla CMS as a backend for iPhone app

  - by srik

  I would like my iPhone app to get dynamic content off the net. This content should be managed using a CMS. I have gone ahead and installed Joomla on my server and will be using the Joomla web interface to create and manage content. I would now like the iPhone app to login to my server and fetch the content. I do not want the complete web pages for my iPhone app. Instead, I want the content in the form of XML or JSON or some serialized format so that I can use the data in a custom layout native to the app. So I am looking for 2 things in particular: 1. How to setup HTTP based authentication for my iPhone app to access data from my server. 2. How to access the content in a serialized format (XML, JSON etc) Are there plugins/extensions/components I can use to achieve the same. Any advice on how this can be achieved would be helpful. I am completely new to setting up/using CMS.

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• SSD for swap on Ubuntu server

  - by grs

  Currently I am reading SSD reviews and I wonder how much exactly I will benefit if I move the 24 GB swap from 7200rpm HDD to SSD. Does anyone implemented swap space on SSD? Is this generally good idea? On a side note: I read that ext4 has much better performance if the journal is on SSD. Anyone with such a setup? Thanks! Edit: Here I will answer the questions posted: Occasionally, relatively rare I am hitting the swap. I know what the swap is for and that is better to get more RAM. When the server begins to swap its performance degrades (not a surprise). The idea is if I have few memory hungry processes running, to improve the overall system performance at that time, using SSD for swap, instead of slower rotational media. At the end - I want to be able to login faster and check the server state during swapping, instead of waiting on the login prompt. And of what I see SSD is cheaper per GB than RAM. Would I have better server performance during swapping (as rare it is) using SSD compared to HDD? Where 10k or 15k rpm HDDs would rate in this scenario? Thank you all for your quick and prompt answers!

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• NFS-shared file-system is locking up

  - by fredden

  Our NFS-shared file-system is locking up. Please feel free to ask any questions you feel relevant. :) At the time, there are a lot of processes in "disk sleep" state, and the load averages on our machines sky-rocket. The machines are responsive on SSH, but our the majority of our websites (apache+mod_php) just hang, as does our email system (exim+dovecot). Any websites which don't require write access to the file-system continue to operate. The load averages continue to rise until some kind of time-out is reached, but for at least 10-15 minutes. I've seen load averages over 800, yet the machines are still responsive for actions which don't require writing to the shared file-system. I've been investigating a variety of options, which have all turned out to be red-herrings: nagios, proftpd, bind, cron tasks. I'm seeing these messages in the file server's system log: Jul 30 09:37:17 fs0 kernel: [1810036.560046] statd: server localhost not responding, timed out Jul 30 09:37:17 fs0 kernel: [1810036.560053] nsm_mon_unmon: rpc failed, status=-5 Jul 30 09:37:17 fs0 kernel: [1810036.560064] lockd: cannot monitor node2 Jul 30 09:38:22 fs0 kernel: [1810101.384027] statd: server localhost not responding, timed out Jul 30 09:38:22 fs0 kernel: [1810101.384033] nsm_mon_unmon: rpc failed, status=-5 Jul 30 09:38:22 fs0 kernel: [1810101.384044] lockd: cannot monitor node0 Software involved: VMWare, Debian lenny (64bit), ancient Red Hat (32 bit) (version 7 I believe), Debian etch (32bit) NFS, apache2+mod_php, exim, dovecot, bind, amanda, proftpd, nagios, cacti, drbd, heartbeat, keepalived, LVS, cron, ssmtp, NIS, svn, puppet, memcache, mysql, postgres Joomla!, Magento, Typo3, Midgard, Symfony, custom php apps

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• VPS Memory Exchausted Even With Light Settings

  - by user101570

  Linux noob here. I have a 256MB VPS on Ubuntu 11.04 server and when I run "free -m" the result shows all memory being used (including the second line re: buffers/cache). I found this very strange, considering I only have 5 Apache processes running each chewing up about 20MB each. MYSQL is taking up 30MB. To my knowledge, and according to "top", I have no other memory hogs operating. Settings that may be relevant: PHP memory_limit = 32M MYSQL key_buffer = 16M Prefork MPM Maxclients = 10 So when I reviewed these settings, I naturally thought maxclients was too high, so I tried switching it to 5. Now not only does my memory still show as being 100% used, my website loads much, much slower, despite not getting any traffic aside from mine at the moment. I don't understand this. I thought a single Apache process handles all requests from a client received within the "KeepAliveTimeout" window, which I've set to 2 seconds. With my initial config. of 10 maxclients, my page load times are around .3ms, so a single process should handle that no problem, correct? So next I went to an extreme level of 1 for maxclients. My memory is still at 100% usage and my site loads painfully slow. I'm a noob at a complete loss here. According to the many tutorials I've read on basic server setup, I should be good to go. Help! Please! Edit: total used free shared buffers cached Mem: 256 256 0 0 0 0 -/+ buffers/cache: 256 0 Swap: 0 0 0

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• Change Outlook's default calendar to iCloud (meeting requests end up in wrong calendar)

  - by flohei

  Following scenario: I've got a main computer (Windows 7, Office 2010) which is being used to manage contacts, meetings, etc. using Outlook. Now I've added an iPad and an iPhone to sync using iCloud. I moved all appointments and contacts from the old PST file to the iCloud file. All the data syncs nicely. The email account I'm using in Outlook is an IMAP account which opens up another data file which brings us to a total of three data files in Outlook's side bar. The problem: When one of our clients sends us meeting requests via email they show up in the IMAP's inbox. When we open them up they automatically get added to Outlook's default calendar (the one in the original PST). Is there any chance not to add them to that calendar but the iCloud one? Basically we could completely get rid of the original PST since we don't use it at all anymore but the settings do not allow me to remove this PST file and set the iCloud one as default. Thanks!

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• How to go about rotating logs which are arbitrary named and placed in deeply nested directories?

  - by Roman Grazhdan

  I have a couple of hosts which are basically a playground for developers. On these hosts, each of them has a directory under /tmp where he is free to do all he wants - store files, write logs etc. Of course, the logs are to be rotated, or else the disc will be 100% full in a week. The files can be plenty, but I've dealt with it with paths like /tmp/[a-e]*/* and so on and lived happily for a while, but as they try new cool stuff on the machine logrotate rules grow ugly and unmanageable, and it's getting more difficult to understand which files hit the glob. Also, logrotate would segfault if asked to rotate a socket. I don't feel like trying to enforce some naming policies in that environment, I think it's going to take quite a lot of time and get people annoyed and still would fail at some point. And I still need to manage the logs, not just rm the dirs at night. So is it a good idea in circumstances like these to write a script which would handle these temporary files? I prefer sticking with standard utilities whenever possible, but here I think logrotate is getting less and less manageable. And probably someone heard of some logrotate alternatives which would work well in such an environment? I don't need emailing logs or some other advanced features, so theoretically some well commented find | xargs would do. P.S. I do have a log aggregator but this stuff is not going to touch my little cute logstash machine.

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• All of the NTFS hard links disappear, where are hardlinks stored on disk and how to recover them?

  - by Osiris

  This is Windows 7 x64 sp1 on a NTFS file system. All hardlinks within C:\Windows\System32 folder disappear, and the Windows can't boot, because even the osloader, C:\Windows\System32\boot\Winload.exe also disappeared. Nevertheless, the original files are still located in the corresponding C:\Windows\winsxs folders. After booting into the Recovery Environment, and copied one Winload.exe (x64) from other folder, Windows gave an error pointing out that "ntoskrnl.exe is corrupted or missing...its file digital signature cannot be verified" In trying to boot in Safe Mode, the message above was shown after a screen prompting "Loaded \Windows\system32\config\system" Because at this early booting stage, smss.exe was still not loaded, so there is not any dumping and logs. Based on my study, ntoskrnl.exe depends on the following files: C:\\windows\\system32\\PSHED.DLL C:\\Windows\\System32\\hal.dll C:\\Windows\\System32\\kdcom.dll C:\\Windows\\System32\\clfs.sys C:\\Windows\\System32\\ci.dll All those files above are copied from their corresponding folders and verified their md5 with a well-operating Windows 7 x64 SP1. But the booting error is still the same: "ntoskrnl.exe is corrupted or missing..." **Background:** Before the reboot, there was an windows update going on. Then something unknown happen, almost all processes were broken to run, including the windows task manager, taskmgr.exe. After mount the hard disk to other computer, it seems that all hardlinks within C:\Windows\System32 folder were gone. I tried several data recovery software, but they are not be able to find those disappeared NTFS hard links. So the question is: Where are information about those hard links stored? And how to recover them? Are they depend on some windows service or stored in the registry?

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• rpmbuild gives seg fault

  - by Deepti Jain

  I am trying to build an rpm using the rpmbuild tool. I have source code which build binaries around 30 GB. This software for which I am making the rpm has dozens of executables. When I copy only the binaries of a single executable (Eg. init) my rpm builds successfully. But when I dump the entire build to the rpm, rpmbuild does everything but gives a seg fault in the end. Here is my spec file: # This is a sample spec file for wget %define _topdir /root/mywget %define name source %define release 1 %define version 1.12 %define _builddir /root/mywget/BUILD/glenlivet %define _buildrootdir /root/mywget/BUILDROOT %define _buildroot /root/mywget/BUILDROOT %define _sourcedir /root/mywget/SOURCES BuildRoot: %{_buildroot} Summary: GNU source License: GPL Name: %{name} Version: %{version} Release: %{release} Source: %{name}-%{version}.tar.gz Prefix: /usr Group: Development/Tools %description The GNU sample program downloads files from the Internet using the command-line. %prep %setup -q -n glenlivet %build cd %{_builddir} make all %install rm -rf %{_buildrootdir} mkdir -p %{_buildrootdir}/bin cp -p -r %{_builddir}/build/obj-x64/* %{_buildrootdir}/bin/ %files %defattr(-,root,root) /bin/* If I only copy some of the binaries (let say one utility and its dependent binaries) it works fine. But when I try to copy the entire build, I get a seg fault. I get the seg fault after rpmbuild has executed these sections: %prep %build %install rpmbuild also processes my source file. Processing files: source-1.12-1 Finding Provides: Finding Requires: Finding Supplements: Provides:...... Requires:...... Checking for unpackaged file(s):/ usr/lib/rpm/check-files /root/mywget/BUILDROOT Checking for unpackaged file(s):/ usr/lib/rpm/check-files /root/mywget/BUILDROOT Segmentation fault Any clue what wrong is going on or where does rpmbuild fails? Thanks in advance

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• Display issue with fresh install of windows server 2012

  - by Tony

  I installed windows server 2012 last night on my home "server". I use server loosely. From the get go I had display and graphic issues. The image was fuzzy and jumbled up during the install. This continued once booted into the install. I did installed Server 2012 twice now as the first time, I only installed "core". I know this is not a busted graphics card because it worked fine in Win7, during boot, and fine in "core" mode. Once booted into "GUI" install of Server 2012, the image was messed up again. To make things even more weird, the windows "loading" screen looks fine. Once the login screen appears the image is fuzzy and jumbled. My guess was that it was a driver issue. I did try to install the win8 x64 drivers from nvidia. This caused the system to become unbootable and I had to restore to a previous working point and uninstall the driver. I did try two different monitors and cables. Also both ports on the back of the video card. I did manage to get RDP running and that works fine. I rarely work directly on this machine but it would be nice to have the option back. Geforce 210, AMD 4600+, 4 gigs of ram.

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• Customer site is out of IP addresses, they want to go from /24 to /12 netmask... Bad idea?

  - by ewwhite

  One of my client sites called to ask me to change the subnet masks of the Linux servers I manage there while they re-IP/change the netmask of their network based on a 10.0.0.x scheme. "Can you change the server netmasks from 255.255.255.0 to 255.240.0.0?" You mean, 255.255.240.0? "No, 255.240.0.0." Are you sure you need that many IP addresses? "Yeah, we never want to run out of IP addresses." A quick check against the Subnet Cheat Sheet shows: a 255.255.255.0 netmask, a /24 provides 256 hosts. It's clear to see that an organization can exhaust that number of IP addresses. a 255.240.0.0 netmask, a /12 provides 1,048,576 hosts. This is a small < 200-user site. I doubt that they'd allocate more than 400 IP addresses. I suggested something that provides fewer hosts, like a /22 or /21 (1024 and 2048 hosts, respectively), but was unable to give a specific reason against using the /12 subnet. Is there anything this customer should be concerned about? Are there any specific reasons they shouldn't use such an incredibly large mask in their environment?

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• How to autorun wpa_supplicant on Debian startup

  - by The Electric Muffin

  I'd like to run wpa_supplicant -D wext -i wlan0 -c /etc/wpa_supplicant.conf on Debian startup (runlevels 2-5). I found some vague instructions from a related question that said to put a script in /etc/init.d/ and then symlink to it from the apropriate /etc/rcRUNLEVEL.d/ directories. However, I noticed that there are already some files named "wpasupplicant" that probably run at startup: /etc/network/if-down.d/wpasupplicant /etc/network/if-post-down.d/wpasupplicant /etc/network/if-pre-up.d/wpasupplicant /etc/network/if-up.d/wpasupplicant They all are symlinks to the same script, /etc/wpa_supplicant/ifupdown.sh. It has a comment at the beginning saying it "[...] allows ifup(8), and ifdown(8) to manage wpa_supplicant(8) and wpa_cli(8) processes running in daemon mode." However, the closest it gets to calling wpa_supplicant itself is (in functions.sh): WPA_SUP_BIN="/sbin/wpa_supplicant" [snip] start-stop-daemon --start --oknodo $DAEMON_VERBOSITY \ --name $WPA_SUP_PNAME --startas $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE \ -- $WPA_SUP_OPTIONS $WPA_SUP_CONF [snip] start-stop-daemon --stop --oknodo $DAEMON_VERBOSITY \ --exec $WPA_SUP_BIN --pidfile $WPA_SUP_PIDFILE Does that mean it's safe to make an init.d script for wpa_supplicant, and if so what would it look like? General info: Debian Squeeze (5.0) official wpasupplicant package (v0.6.10-2.1) The full contents of my system's functions.sh and ifupdown.sh are here (dependent, of course, on my system's uptime—it's a five-year-old laptop that greatly enjoys overheating): functions.sh ifupdown.sh

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• Subdomain is preventing my search results from rising as expected in page rank

  - by culov

  My problem is that I have a site which has requires a dedicated page for every city I choose to support. Early on, I decided to use subdomains rather than a directly after my domain (ie i used la.truxmap.com rather than truxmap.com/la). I realize now that this was a major mistake because Google seems to treat la.truxmap.com as a completely different site as ny.truxmap.com. So for instance, if i search "la food truck map" my site will be near the top, however, if i search "nyc food truck map" im no where in sight because ny.truxmap.com wouldnt be very high in the page rank by itself, and it doesnt have the boost that it ought to be getting from the better known la.truxmap.com So a mistake I made a year ago is now haunting my page rank. I'd like to know what the most painless way of resolving my dilemma might be. I have received so much press at la.truxmap.com that I can't just kill the site, but could I re-direct all requests at la.truxmap.com to truxmap.com/la and do the same for all cities supported without trashing my current, satisfactory page rank results I'm getting from la.truxmap.com ?? EDIT I left out some critical information. I am using Google Apps to manage my domain (that is, to add the subdomains) and Google App Engine to host my site. Thus, Google Apps provides a simple mechanism to mask truxmap.appspot.com (the app engine domain) as la.truxmap.com, but I don't see how I can mask it as truxmap.com/la. If I can get this done, then I can just 301 redirect la.truxmap.com to truxmap.com/la as suggested below. Thanks so much!

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• Windows 7 Paging file apparently not being used

  - by Daniel F.

  I'm running Windows 7 Home Premium 32bit on a mobo with 24GB RAM. Of those 24GB, 20GB are assigned as a RAMDISK via ASRock XFastRAM. This RAMDISK has the drive letter X assigned to it. On X:\ I'm storing the temporary files folder, as well as pagefile.sys. Pagefile.sys has 6GB of size. The X:\ has usually around 14GB free space, so the temporary files are negligible, it's mostly the browsers which are storing their caches on there. Now my issue is that Firefox is crashing a lot on me, no error message pops up, but I know that this is because it's out of memory. I could kind of live with that, but now that I switched from using Eclipse to Android Studio, I know that I'm in trouble, because Java isn't capable of allocating, and Android Studio, together with the Java instances it launches, is quite a memory hog. So I tried to figure out what's wrong, and apparently Windows isn't swapping out memory onto the paging file. While my applications are crashing (firefox) / not starting (java vm's), the paging file is only using constantly around 15% of its size (checked with the performance monitor). 15% equals to 1GB aprox. I know that the correct solution would be to switch to 64 bit Windows, but I had to use the 32 bit version because of driver issues which I had about two years ago, and I guess that I'll have them again if I reformat and install the 64 bit version. Also, the machine is running quite stable, the only issue is the memory, so I'd like to use it as it is (as the apps are installed and configured) Is there a way to make Windows use the paging file more efficiently? None of my processes require more than 1GB, I'd just like it to swap out some seldomly used stuff, like GoogleCrashHandler.exe and stuff like that in order to have "more physical memory avaliable". Is that possible?

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• Is there a standard method for assigning nameservers to servers in a Windows domain?

  - by HopelessN00b

  As the title asks, I'm wondering if there's any standard or "best practice" for how to actually assign nameservers (DNS) and manage the nameserver configuration for client servers on a Windows domain. I'm talking about the setting circled in the below image, in case the language of the question is not clear enough: This is for a large, multi-site environment, where ideally/hopefully all servers point at their site's Domain Controller as the primary DNS server, and a DNS server at a different site as the secondary DNS server. For simplicity's sake, we can say that the secondary server would be the Domain Controller at the home site for everyone, and there are no tertiary DNS servers (even though that's not actually the case). Try as I might, I can't seem to find a GPO setting for this (at least on FL 2003 R2, the Computer Configuration - Administrative Templates - Network - DNS Client - DNS Servers GPO is Supported on: Windows XP Professional only), and I find it rather hard to believe that the "best"/"standard" solution would therefore be either scripting up something to apply the DNS settings per site, or using a DHCP server to push those configurations out to the other servers via the DHCP Scope Options. So, is there a standard way of managing this configuration? (That's hopefully not "a script" or "DHCP Scope Option.)

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