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• Is Gmail Being Blocked by my ISP (wait till you read this)?

  - by James

  This is the strangest thing I have ever encountered. I have a desktop on which I cannot access Gmail and also youtube sign in (I believe since youtube is owned by google they both use the same sign in system). So okay, maybe my ISP is blocking these for some reason or maybe my firewall is, or maybe there is something wrong with my connectivity, right? NO. On other computers that uses the same connection via a wireless router I can access both gmail and youtube sign in just fine. On this computer which doesn't have a wireless card and so I have to connect via Ethernet cable (connected to a USB converter since the Ethernet port doesn't work anymore) I can access all sites and services including things like aol and hotmail. But only when it comes to gmail, do I get complete and utter throttling. I even turned off my AV ad Firewall momentarily and no luck. The gmail ages starts to load and by mid point it just stays there loading and loading and loading... never ends. I tried everything, I reset the modem and router multiple times. I reinstalled my operating system from a vista to a windows 7 hoping a complete reinstall would solve the issue, but no luck. So can anyone for the life of them figure out why this could be? And yes, I am going to call my ISP but not to solve this issue, but to cancel them. I want to upgrade to cabel from DSL anyway. I didn't mention my ISP because I'm not sure if that is within the rules (if it's okay some one let me know and I will). P.S. All this happened one day, before gmail was perfectly accessible in this computer. I can't remember anything special that happened on that day prior to this. The only thing I can think of is, my ISP or Google itself is blocking this computer based on it's mac address, but I don't know if that's even done. Additional info: PC: Windows 7 Ultimate 32 bit Connection Type: DSL Connecting Medium: Ethernet cable via USB converter

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• esxi 5 monitoring

  - by user134880

  I'm new to esxi/vmware world. Have few question about monitoring esxi host. Now I'm using trial versian esxi 5.1 I can see performance charts in vShpere client. Cool. But I want to export this raw data (raw - I mean cvs,txt or some format which I can parse later) to other server to be able to parse this data later and create custom charts. (please do not advise to try vCenter, I need custom charts etc.) I could run esxtop in batch mode and use this data... But... How does vShpere client performance charts work? Where client takes data for charts? So if I will use esxtop batch mode it will add extra load to server. Is it possible to use same source as vSphere client use for charts? There is /var/lib/vmware/hostd/stats/hostAgentStats-20.stats file. Its looks like it is binary format. As I understood it is exactly data which I need?!?! Any ideas how to parse it? Thanks! PS: maybe some one know where to find, if there is one, info about processes running on esxi host?

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• Can MS Services for Unix be deployed and accessed from a shared drive?

  - by Ian C.

  I'm interested in experimenting with replacing our dependency on MKS with MS' Sevices for Unix toolset. I was wondering if anyone has any experience with deploying SFU on a shared drive? We like to, wherever possible, host our dev tools on one central NAS and call to the NAS to access the tools instead of rolling stuff out to each and every desktop. I'm not interested in the NFS support or ActiveState Perl. Really, none of the daemon technology is required here. I'm looking for replacements for the coreutils/binutils stuff you find in Linux (and MKS on Windows): sed, awk, csh, bash, grep, ls, find -- the meat-and-potates command line apps that our build and test scripts are built around. If I limit the install to just the Interix GNU Components (and maybe the Remote Connectivity components) will is run nicely from a shared location? To head off some questions: Yes, I've looked at Cygwin. Unfortunately it's performance in our build and test environment is poor. It runs considerably slower than MKS and it's not a direct drop-in replacement for MKS (thanks to its internal pathing and limitations with commands like 'ps'), so it's a tougher sell. Yes, I'm looking at the MinGW offering in parallel to this.

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• Hard drive spark, can it be recovered?

  - by user163558

  Alright, so I was going to install Source Film Maker but I didn't have any space, so I decided to connect an HDD via an USB converter(image below). I shut down the machine, turned the PSU off, and connected via a Molex connector & the USB converter. I turned back on the PSU, no sparks or anything, everything normal, but when I turned on the machine, I heard some sizzing(lol?) and sparks flying and a little flame, but the PC was running fine. I pressed the power button instead pulling out the plug (I panicked) so it continued to short circuit for about 10 seconds. There's a very little part on the HDD that become ash, it's near the Molex connector and the circuit is a little black as well. I'm afraid that I will damage the HDD more so I didn't hook up the HDD after all. Do you think it's the PSU(came default with Cooler Master Elite 430, 500W) or it's the HDD(Samsung SP1203N)? P.S: I've attached the HDD same way before(like 3 months ago), and it worked. HDD burn: USB connector: Sorry for the bad image quality, taken with my phone.

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• Extremely high mysqld CPU usage with no active queries

  - by RadarNyan

  I have a VPS running Ubuntu 12.04 LTS with LEMP stack, followed the guide from Linode Library (since I'm using a Linode) to setup, and everything worked fine until now. I don't know what's wrong, but my CPU usage just goes up since a week ago. Today things getting really bad - I got 74% CPU usage so I went check and found that mysqld taking too much CPU usage (somewhere around 30% ~ 80%) So I did some Google Search, tried disable InnoDB, restart mysql, reset ntp / system clock (Isn't this bug supposed to happen more than a year ago?!) and reboot my VPS, nothing helped. Even with mysql processlist empty, I still get mysqld CPU usage very high. I don't know what I missed and have totally no idea, any advice would be appreciated. Thanks in advance. Update: I got these from running "strace mysqld" write(2, "InnoDB: Unable to lock ./ibdata1"..., 44) = 44 write(2, "InnoDB: Check that you do not al"..., 115) = 115 select(0, NULL, NULL, NULL, {1, 0}^[[A^[[A) = 0 (Timeout) fcntl64(3, F_SETLK64, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}, 0xbfa496f8) = -1 EAGAIN (Resource temporarily unavailable) hum... I did tried to disable InnoDB and it didn't fix this problem. Any idea? Update2: # ps -e | grep mysqld 13099 ? 00:00:20 mysqld then use "strace -p 13099", the following lines appears repeatedly: fcntl64(12, F_GETFL) = 0x2 (flags O_RDWR) fcntl64(12, F_SETFL, O_RDWR|O_NONBLOCK) = 0 accept(12, {sa_family=AF_FILE, NULL}, [2]) = 14 fcntl64(12, F_SETFL, O_RDWR) = 0 getsockname(14, {sa_family=AF_FILE, path="/var/run/mysqld/mysqld.sock"}, [30]) = 0 fcntl64(14, F_SETFL, O_RDONLY) = 0 fcntl64(14, F_GETFL) = 0x2 (flags O_RDWR) setsockopt(14, SOL_SOCKET, SO_RCVTIMEO, "\36\0\0\0\0\0\0\0", 8) = 0 setsockopt(14, SOL_SOCKET, SO_SNDTIMEO, "<\0\0\0\0\0\0\0", 8) = 0 fcntl64(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0 setsockopt(14, SOL_IP, IP_TOS, [8], 4) = -1 EOPNOTSUPP (Operation not supported) futex(0xb786a584, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0xb786a580, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0xb7869998, FUTEX_WAKE_PRIVATE, 1) = 1 poll([{fd=10, events=POLLIN}, {fd=12, events=POLLIN}], 2, -1) = 1 ([{fd=12, revents=POLLIN}]) er... now I totally don't get it x_x help

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• Create a wifi hotspot in a place where an authentication is required

  - by SoftTimur

  I live in a residence where Internet is provided via cable. Once the computer is connected to the cable, launching a browser will trigger an authentication, I have a username and password to enter, then the internet will be connected. With a gateway (e.g. Wireless Cable Voice Gateway Model CBVG834G) and 2 cables, two PCs can connect to the Internet with my account at the same time. Now the question is, I don't like the cable, and would like to create a wifi hotspot. It seems realizable with the same gateway. According to the instruction on page 2-4 of the manual: Enter http://192.168.0.1 in the address field of your Internet browser. Log in to the gateway with either of the default user names, MSO or admin... However, while connecting to the Internet successfully via cable and the gateway (e.g. google works), opening 192.168.0.1 oddly gives me an error on the browser: Does anyone know what happened? Is it due to the authentication required by my residence? Is there any other way to build a hotspot of wifi? PS: My system is MAC OS

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• Clarification on signals (sighup), jobs, and the controlling terminal

  - by asolberg

  So I've read two different perspectives and I'm trying to figure out which one is right. 1) Some sources online say that signals sent from the controlling terminal are ONLY sent to the foreground process group. That means if want a process to continue running in the background when you logout it is sufficient to simply suspend the job (ctrl-Z) and resume it in the background (bg). Then you can log out and it will continue to run because SIGHUP is only sent to the foreground job. See: http://blog.nelhage.com/2010/01/a-brief-introduction-to-termios-signaling-and-job-control/ ...In addition, if any signal-generating character is read by a terminal, it generates the appropriate signal to the foreground process group.... 2) Other sources claim you need to use the "nohup" command at the time the program is executed, or failing that, issue a "disown" command during execution to remove it from the jobs table that listens for SIGHUP. They say if you don't do this when you logout your process will also exit even if its running in a background process group. For example: http://docstore.mik.ua/orelly/unix3/upt/ch23_11.htm ...If I log out anyway, the shell sends my background job a HUP signal... In my own experiments with Ubuntu linux it seems like 1) is correct. I executed a command: "sleep 20 &" then logged out, logged back in and pressed did a "ps aux". Sure enough the sleep command was still running. So then why is it that so many people seem to believe number 2? And if all you have to do is place a job in the background to keep it running why do so many people use "nohup" and "disown?"

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• Autologin 2 Windows users OR Login another user from the desktop

  - by fpdragon

  I'm using two windows users on my HTPC at the same time. One is just for watching videos and one for administration via remote. This setup is quite ideal for me since windows can handle multiple concurrent logins and the win "rdp concurrent hack" (Google). The problem is, I want both users to be logged in automatically when the pc was started. It shall be possible to watch tv and also the admin user shall be automatically logged in to start my scripts and other tasks, even if I haven't logged in via remote desktop manually. Later, when I want to admin my htpc I can just rdp connect the admin user without interrupting the video playback on the actual HTPC's screen and check my cleanup tasks, downloads, ... witch already executed for this admin user. But right now I found no solution to automatically login user A from a user B desktop and I also found no solution to autologin both users immediately at startup. As a workaround I have to fire up my other notebook machine and login one time with the remote user via rdp. From this time on the remote admin user is running concurrent with the main user in the background of the machine. The other workaround would be... after startup switch user from main user to admin user and then back again. But that also requires manual steps. I'm on a Windows 8 System right now but all infos for Win7 or XP would be also interesting. thanks a lot for all ideas. PS: just to prevent useless posts... don't tell me that only one user can be logged in to windows. ;)

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• Apache crashes a few seconds after the start.

  - by Nacho

  Hi, i've got a problem with apache. When i try to start it (/etc/init.d/apache2 start) it dies after a few seconds. It shows up on "ps aux" consuming a lot of memory and then dies. I don't know what could be causing apache to consume this amount of memory: USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 13379 1.0 0.3 14376 3908 ? Ss 22:31 0:00 /usr/sbin/apache2 -k start www-data 13383 0.0 0.4 197316 4196 ? Sl 22:31 0:00 /usr/sbin/apache2 -k start www-data 13390 0.0 0.3 172728 4172 ? Sl 22:31 0:00 /usr/sbin/apache2 -k start www-data 13396 0.0 0.3 156336 4160 ? Sl 22:31 0:00 /usr/sbin/apache2 -k start www-data 13400 0.0 0.3 148140 4156 ? Sl 22:31 0:00 /usr/sbin/apache2 -k start www-data 13403 0.0 0.3 131748 4148 ? Sl 22:31 0:00 /usr/sbin/apache2 -k start Here is a htop screenshot: http://i.imgur.com/N4Chh.png It happened suddenly, no change had been made to server config, so i don't know whats causing it. The error log of my virtual servers shows this: [Sun Jan 30 22:19:50 2011] [alert] (11)Resource temporarily unavailable: mod_wsgi (pid=9685): Couldn't create worker thread 11 in daemon process 'fb.ebookmetafinder.com'. [Sun Jan 30 22:19:55 2011] [alert] (11)Resource temporarily unavailable: mod_wsgi (pid=9685): Couldn't create worker thread 19 in daemon process 'fb.ebookmetafinder.com'. [Sun Jan 30 22:29:40 2011] [alert] (11)Resource temporarily unavailable: mod_wsgi (pid=12009): Couldn't create worker thread 18 in daemon process 'fb.ebookmetafinder.com'. [Sun Jan 30 22:31:06 2011] [alert] (11)Resource temporarily unavailable: mod_wsgi (pid=13396): Couldn't create worker thread 15 in daemon process 'fb.ebookmetafinder.com'. [Sun Jan 30 22:35:02 2011] [alert] (11)Resource temporarily unavailable: mod_wsgi (pid=14009): Couldn't create worker thread 16 in daemon process 'fb.ebookmetafinder.com'. [Sun Jan 30 22:35:07 2011] [alert] (11)Resource temporarily unavailable: mod_wsgi (pid=14009): Couldn't create worker thread 17 in daemon process 'fb.ebookmetafinder.com'. I'm on a ubuntu server vps and i use mod_wsgi with django. Thanks.

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• Why java -version returning a different version than the one defined in JAVA_HOME?

  - by Shekhar

  I am trying to set JAVA_HOME in Ubuntu OS. I have copied jdk 1.7 in /usr/lib/jvm and set JAVA_HOME in /etc/profile file. Contents of /usr/lib/jvm folder are as follows : shekhar@ubuntu:~$ ls /usr/lib/jvm/ default-java java-1.6.0-openjdk java-6-openjdk java-6-openjdk-i386 jdk1.7.0_01 java-1.5.0-gcj-4.6 java-1.6.0-openjdk-i386 java-6-openjdk-common java-7-openjdk-i386 and last few lines of /etc/profile file are as follows : export JAVA_HOME=/usr/lib/jvm/jdk1.7.0_01 export PATH=$PATH:$JAVA_HOME/bin After finishing all this when I run java -version command I get following output : shekhar@ubuntu:~$ java -version java version "1.6.0_24" OpenJDK Runtime Environment (IcedTea6 1.11.4) (6b24-1.11.4-1ubuntu0.12.04.1) OpenJDK Server VM (build 20.0-b12, mixed mode) and when I run ls -lah command I get following output : shekhar@ubuntu:~$ ls -lah /usr/bin/java lrwxrwxrwx 1 root root 22 Sep 29 09:58 /usr/bin/java -> /etc/alternatives/java shekhar@ubuntu:~$ ls -lah /etc/alternatives/java lrwxrwxrwx 1 root root 45 Sep 29 09:58 /etc/alternatives/java -> /usr/lib/jvm/java-6-openjdk-i386/jre/bin/java Can anyone please tell me which thing I am missing? Why Ubuntu is still pointing to open jdk and not to my jdk 7? PS : I have seen this similar question and its answers but that question is related to Windows OS and not for Ubuntu so I am reposting this similar question for Ubuntu.

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• The SSL certificate doesn't established

  - by Andrey Eagle

  situation following: Windows Server 2008 R2 platform. Certificate installation in the IIS Manager occurs successfully with *.cer file but if I refresh the manager (F5), the certificate vanishes from the list. And, respectively in the Bindings window, at https addition, the certificate is absent in the menu. Thus if to open certificates via the MMS console, it can be seen in the Personal store. Whether there is any possibility to make so that the web server could "see" this certificate or how to make so that it didn't disappear from the list? Prompt how to solve this problem, thanks in advance! P.S. The certificate is acquired in tawte. In total that to me provided, these are account data where it is possible simply with save-pastit the certificate in 2 options: PKCS#7 and X.509. Here is the manual I used. P.S.2 If Complete Certificate Request with *.p7b I get an error: Cannot find the certificate request that is associated with this certificate file. Acertificate request must be comleted on the computer where the request was created.

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• Keep permalinks in Wordpress

  - by Remus Rigo

  Is there any way to set my permalinks to keep their exact link. If I have a post like this one http://blog.rigo.ro/?p=11, then I would like that every time I edit the post to keep this link. I have installed the Revision Control plugin and I set it to do not keep revisions. Any ideea how to do this? I want to keep this format of links. Edit: I took a look again, the permalinks keep their links, but every time I edit it adds a new version to the database and the next post will have a higher number. If I edit my current post for 3 times (blog.rigo.ro/?p=11) the next post will be blog.rigo.ro/?p=14. Now, my question is how can I keep all my post and edits clean, one post/more edits = one entry in the database, so if I have. 10 post on my site and I edit them, I would like that my permalinks to be from 1 to 10. PS: I don't want to edit my database manually, is there any plugin to do this?

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• Windows Firewall Software to Filter Transit Traffic

  - by soonts

  I need to test my networking code for Nintendo Wii under the conditions when some specific Internet server is not available. Wii is connected to my PC with crossover ethernet cable. PC has 2 NICs. PC is connected to hardware router with ethernet cable. The hardware router serves as NAT and has an internet connected to its uplink. I set the Wii to be in the same lan as PC by using Windows XP Network bridge. I can observe the WII network traffic using e.g. Wireshark sniffer. Is there a software firewall that can selectively filter out transit traffic? (e.g. block outgoing TCP connections to 123.45.67.89 to port 443) I tried Outpost Pro 2009 and Comodo. Outpost firewall blocks all transit traffic with it's implicit "block transit packet" rule. If the transit traffic is explicitly allowed by creating the system-wide low level rule, then it's allowed completely and no other filter can selectively block it. Comodo firewall only process rules when the packet has localhost's IP as either source or destination, allowing the rest of the traffic. Any ideas? Thanks in advance! P.S. Platform is Windows XP 32 bit, no other OSes is allowed, Windows ICS (Internet Connection Sharing) doesnt work since the Wii is unable to connect, becides I don't like the idea of adding one more level of NAT.

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• Jobs with anacron won't run

  - by mareser

  I would like to run two bash scripts daily using anacron in order to backup some data. Unfortunately I can't figure out why said scripts are not executed. For test purposes I let cron execute the scripts and it worked fine. cat /etc/anacrontab gives # /etc/anacrontab: configuration file for anacron # See anacron(8) and anacrontab(5) for details. SHELL=/bin/sh PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin # These replace cron's entries 1 5 cron.daily nice run-parts --report /etc/cron.daily 7 10 cron.weekly nice run-parts --report /etc/cron.weekly @monthly 15 cron.monthly nice run-parts --report /etc/cron.monthly 1 5 TB_bak /bin/sh /home/vasco2/Dropbox/Scripts/backup_TB.sh 1 5 key_db_bak /bin/sh /home/vasco2/Dropbox/Scripts/bak_key_db.sh The output of ls ~/Dropbox/Scripts/ is backup_TB.sh bak_key_db.sh I use Linux Mint Katya. uname -a gives Linux vasco2 2.6.38-8-generic-pae #42-Ubuntu SMP Mon Apr 11 05:17:09 UTC 2011 i686 i686 i386 GNU/Linux I would be very happy if somebody could point me in the right direction on why those scripts won't get executed. P.S.: There is no anacron tag on superuser.com. Maybe somebody wants to change that.

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• My home box as my own host?

  - by Majid

  Hi all, I have a 512 kb/s DSL service at home. I do not have a static IP but I can get one if I pay some extra to my ISP. Now, if I get the static IP, can I make my home box act as my internet host? What else do I need? Thanks P.S. I know that if at all possible, the site I make available this way might be slow, that is alright, my question is if it is possible at all. Edit: I need this for very small traffic. I am a php developer and for my projects I am often asked to provide a demo. I currently use a free hosting for this purpose but it is down most of the time and support is non-existent. So I thought to set-up my home computer as my test server. With this please note that: I will only occasionally have 'visitors' and that will be one or possibly two visitors at any time. These demos, are to showcase functionality, so no big images are served and page views will normally generate under 100KB of traffic.

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• A-2-Z web hosting on Amazon AWS

  - by JDelage

  All, I am studying web dvp, and one of my classes is project-based. We have to build a functional site that demonstrate our understanding of: HTML, CSS, Javascript, php, MySQL, And potentially Ajax or some other web component. For the project, we can use a local server using WampServer and basically build the site entirely on our laptop. If I have time, I would like to create a real site, and I thought it would be a good way to familiarize myself with Amazon's AWS services. So if I purchase a domain name, can I rely on AWS to host the site from A-to-Z? I understand I can use AWS to host content, the database, and do the background computations, if needed. What else do I need and what are the parts that AWS cannot help me with? Second, is there good documentation for a beginner to navigate AWS and learn how to use it (either on Amazon, or some 3rd party sites, or even a good book, as long as is up to date). The ideal documentation would be a tutorial on creating a web site from a-to-z on AWS, as detailed as possible. As you can guess, I have limited understanding of the IT issues. I have 0 Linux or sysadmin experience, but this is a good opportunity to change that. I hope you can help me. Thank you, JDelage PS: Please keep the answers AWS-specific. At this point, I am only interested in alternative services to the extent that they plug a hole in Amazon's offering.

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• Can't connect to vsftpd on Ubuntu 10.04

  - by Johnny

  I started the vsftpd on Ubuntu 10.04, but can't connect to it. The error says(FTP Client): Status: Connecting to 124.205.xx.xx:21... Error: Connection timed out Error: Could not connect to server I've checked the server status, and vsftpd is running: $ ps ax | grep vsftpd 23646 ? Ss 0:00 /usr/sbin/vsftpd 23650 pts/1 S+ 0:00 grep --color=auto vsftpd port 21 is under listening as well: $ netstat -tlnp | grep 21 (No info could be read for "-p": geteuid()=1000 but you should be root.) tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN - I can connect to localhost: $ ftp localhost Connected to localhost. 220 (vsFTPd 2.2.2) Name (localhost:jlee): 331 Please specify the password. Password: 230 Login successful. Remote system type is UNIX. Using binary mode to transfer files. ftp> Here is iptables output $ sudo iptables -vL Chain INPUT (policy ACCEPT 191 packets, 144K bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 124 packets, 28502 bytes) pkts bytes target prot opt in out source destination What's the problem here?

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• Problems compiling coreutils-8.5 on Solaris 5.10 on Intel platform

  - by PP

  I am having trouble compiling coreutils-8.5 on Solaris 5.10 on the Intel platform using cc. Firstly I had the following error during ./configure: checking whether <wchar.h> uses 'inline' correctly... no configure: error: <wchar.h> cannot be used with this compiler (/tool/sunstudio12.1/bin/cc -xc99=all -g -D_REENTRANT). This seemed similar to the problem in this question. The solution was to edit configure and replace the reference of -xc99=all to -xc99=all,no_lib. This permitted the configure to complete. Then I ran /usr/sfw/bin/gmake and it progressed until I received the following message: Making all in src gmake[2]: Entering directory `/home/peterp/src/coreutils-8.5/src' gmake all-am gmake[3]: Entering directory `/home/peterp/src/coreutils-8.5/src' CCLD chroot Undefined first referenced symbol in file eaccess ../lib/libcoreutils.a(euidaccess.o) ld: fatal: Symbol referencing errors. No output written to chroot What could cause this problem? PS I was only compiling coreutils because I wanted colour ls.

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• Webserver python update script

  - by ThePyCoder

  So i have made this website on which you can trade stocks based on real stock quotes with virtual money. The stock quotes are in a MySQL database and are updated using a python script which runs every minute or so. Now, this works fine on my local machine with xampp but how about moving the project to a commercial web server? Basically I want my page hosted by a professional company but do those kind of servers support python scripts running in the background? Because a dedicated server would be to expensive and the script does some other sql tasks too so it can't be replaced by PHP or so... So, are there any good web hosting services out there who give me the possibility of running a script in the background and hosting a website in the foreground? For what server specifications do i have to look for? Thnx in advance! PS: I've done some research, and I found a python supporting web host WITH ssh support. Is that what I need? Or is the ssh not allowed to start processes?

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• Need to have access to my office PC from my laptop hopping through two VPN servers

  - by Andriy Yurchuk

  Here's the illustration of what I have ( http://clip2net.com/s/2fvar ): My office PC with it's IP of 123.45.e.f. Office VPN, which I will connect to from my VPS to get to my office PC. My own VPS, which I use as a: client to connect to office VPN (through vpnc, which creates a tun0 with 123.45.c.d IP address); VPN server my laptop can connect to (OpenVPN, tun1, 10.8.0.1) My own laptop I will use as a VPN client to connect to VPS OpenVPN server (will create a tun0 with 10.8.0.2 IP address) Now what I have to do is to allow my laptop to connect to at least my office PC, but preferably to all the 123.45.x.x subnet. Please advice on how to best configure OpenVPN, routing, iptables or whatever else is needed on my VPS so that my laptop could gain access to my office PC. P.S. The reason I'm hopping through my VPS is that being connected to the office WiFi I cannot access my office PC and I cannot connect to office VPN (which is another way to access my office PC). The only way to access my PC from office WiFi I have is hopping though an outside network.

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• IPtables: DNAT not working

  - by GetFree

  In a CentOS server I have, I want to forward port 8080 to a third-party webserver. So I added this rule: iptables -t nat -A PREROUTING -p tcp --dport 8080 -j DNAT --to-destination thirdparty_server_ip:80 But it doesn't seem to work. In an effort to debug the process, I added these two LOG rules: iptables -t mangle -A PREROUTING -p tcp --src my_laptop_ip --dport ! 22 -j LOG --log-level warning --log-prefix "[_REQUEST_COMING_FROM_CLIENT_] " iptables -t nat -A POSTROUTING -p tcp --dst thirdparty_server_ip -j LOG --log-level warning --log-prefix "[_REQUEST_BEING_FORWARDED_] " (the --dport ! 22 part is there just to filter out the SSH traffic so that my log file doesn't get flooded) According to this page the mangle/PREROUTING chain is the first one to process incomming packets and the nat/POSTROUTING chain is the last one to process outgoing packets. And since the nat/PREROUTING chain comes in the middle of the other two, the three rules should do this: the rule in mangle/PREROUTING logs the incomming packets the rule in nat/PREROUTING modifies the packets (it changes the dest IP and port) the rule in nat/POSTROUTING logs the modified packets about to be forwarded Although the first rule does log incomming packets comming from my laptop, the third rule doesn't log the packets which are supposed to be modified by the second rule. It does log, however, packets that are produced in the server, hence I know the two LOG rules are working properly. Why are the packets not being forwarded, or at least why are they not being logged by the third rule? PS: there are no more rules than those three. All other chains in all tables are empty and with policy ACCEPT.

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• smartctl short test doesn't seem to complete

  - by Cédric COPY

  I am working on project which involve automated HDD testing through smartctl. The station is working fine on most product, but I have two specific products that fail the smartctl test. Those two product are both WD product (WD2500BUDT series) Smartctl behaviour is quite strange, in fact the test is launched without any problem, i wait about 2min (test length), and when i check the smartctl, i have got no result at all. It's like I hadn't launched any test (no fail, no success in smartctl result). No error return on command, nothing in syslog, .. As i said before, the test is working for other product, thousands products worked well with this test. The main smartctl command used are : smarctl -t shortest /dev/sdX #Launch test smartctl -l selftest /dev/sdX #Look at test result I have tried to use: smartctl -s on /dev/sdX or smartctl -o on /dev/sdX But doesn't change anything. The system is using Debian 6.0, smartctl v5.40 (rev 3124) x86_64, HDD are plug through SATA to PCI controller. I have 4 HDD connected at a time. Well if anyone has some hints to give with this problem, because I have no idea how can i fix this. Thanks in advance. PS: Not sure if it was a serverfault topic, sorry if i was wrong!

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• Unable to get ejabberd prebind to work

  - by cdecker

  I'm trying to get the prebind of BOSH sessions to work. I want to be able to authenticate a user in my CMS and then log him in when he accesses the chat, for this I found https://github.com/smokeclouds/http_prebind, it all works find and I was able to compile it with the following steps: rake configure sed -i 's/AUTH_USER/a_user/g' src/http_prebind.erl sed -i 's/AUTH_PASSWORD/a_password/g' src/http_prebind.erl sed -i 's/EJABBERD_DOMAIN/jabber.my.tld/g' src/http_prebind.erl rake build rake install And then adding the http request bindings to the configuration: {5280, ejabberd_http, [ {request_handlers, [ {["http-prebind"], http_prebind} ]}, %%captcha, http_bind, http_poll, http_prebind, web_admin ]} ]}. As far as I understand it I should now be able to simply request a new session like this: curl -u a_user:a_password http://jabber.my.tld:5280/http-prebind/some_user But no matter what I always get Unauthorized as response. Any idea about this one? PS: I also tried Mod-Http-Pre-Bind, but as it does not require a password I would prefer to use http_prebind. PPS: Does the user with username AUTH_USER and password AUTH_PASSWORD actually have to exist? I'm currently using an admin account.

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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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• issue in installing postgresql 9.3.4 on Windows server 2003 x64

  - by randydom

  Hello i really did all what i know to install the PostgreSQL 9.3.4 on my windows 2003 server x64, but i'm always stopped with this error : please see the error : http://oi57.tinypic.com/s4tb8i.jpg I really don't know what to do , if i click OK then when i go to the windows services list i don't find the PostgreSQL service so i can't Start the service . can any one please help me to install it correctly . PS: i've followed all steps in the : wiki.postgresql.org/wiki/Troubleshooting_Installation many thanks . here's the installer log * where i get " Failed to initialise the database cluster with initdb " : Called IsVistaOrNewer()... 'winmgmts' object initialized... Version:5.2 MajorVersion:5 Ensuring we can write to the data directory (using cacls): Executing batch file 'rad22ADE.bat'... processed dir: C:\Program Files\PostgreSQL\9.2\data Executing batch file 'rad22ADE.bat'... The files belonging to this database system will be owned by user "Administrator". This user must also own the server process. The database cluster will be initialized with locale "English_United States.1252". The default text search configuration will be set to "english". fixing permissions on existing directory C:/Program Files/PostgreSQL/9.2/data ... initdb: could not change permissions of directory "C:/Program Files/PostgreSQL/9.2/data": Permission denied Called Die(Failed to initialise the database cluster with initdb)... Failed to initialise the database cluster with initdb Script stderr: Program ended with an error exit code Error running cscript //NoLogo "C:\Program Files\PostgreSQL\9.2/installer/server/initcluster.vbs" "NT AUTHORITY\NetworkService" "postgres" "****" "C:\Program Files\PostgreSQL\9.2" "C:\Program Files\PostgreSQL\9.2\data" 5432 "DEFAULT" 0 : Program ended with an error exit code Problem running post-install step. Installation may not complete correctly The database cluster initialisation failed. Creating Uninstaller Creating uninstaller 25% Creating uninstaller 50% Creating uninstaller 75% Creating uninstaller 100% Installation completed Log finished 05/02/2014 at 04:04:04

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