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  • Maximise network transfer speed of various applications

    - by Alex
    When using nc, scp, wget to transfer files between 2 machines on a dedicated 2Mbps link, I get speeds between 0.5 and 1 Mbps. However, when I use iperf -c 10.0.1.4 -t 20 -P 12 (for example) I can maximise the speed of the link (getting stable 2Mbps). Is there a way to make single stream transfers (such as those done by scp) to utilise all/most of the link? Some kind of tcp settings, or iptables...?

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  • Chef command to create new ec2 instance with second ebs volume attached and mounted instead of the default ephemeral volume?

    - by runamok
    We currently use this command to create a new ec2 instance with chef: knife ec2 server create --node-name=prod-apache-1 --availability-zone us-east-1c --image ami-3d4ff254 --distro ubuntu12.04-gems --groups "default" --ssh-key foo --identity-file ~/.ssh/id_rsa --ssh-user ubuntu --flavor m1.small After this command we then run further chef commands to finish provisioning the server. I was wondering if it would be possible while first setting up the instance I wanted a 100 gb volume created and mounted at /mnt and to have the ephemeral storage mounted at /tmp or /mnt-ephemeral instead. If not what further commands in chef would you advise running? I know how to do this via the aws console and can probably figure out how to do it via the ec2 command line tools but I am knew to chef and a bit overwhelmed.

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  • computer plays movie fine but ps3 plays it with no sound?

    - by kacalapy
    i have a movie that plays fine on my computer but when i copy it to an SD card and play it in my PS3 it has no sound. the audio format is mpeg layer-3 bit rate is 128 frame rate is 25frames/ second data rate is 1068 kbps video sample size is 12 bit video compression is DivX i got these stats by right clicking the file and viewing properties. can i open it in some editor and re-save it? what editor? thanks all

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  • How to include duplicate values when setting environmental variable SET in dos

    - by Sachin
    I am trying to get the values from a file which has duplilcates also. But while setting the values in environmental variable SET, it is not considering the duplicate values. I am using below code: for /f "tokens=1,2 delims=@" %%a in (test.txt) do ( set size=............%%b call set %%size:~-12%%=%%a ) for /f %%a in ('set .') do >>outfile.txt echo %%a Format of test.txt: "C\ab"@12345678 "C\ab\we"@345678905 "C\ad\df"@345678905

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  • Setup IPv4 local on IPv6 VPS

    - by A.D.
    I have a dedicated server running multiple IPv6 only OpenVZ containers. I want them to be able to communicate with the IPv4 internet, but I realized that isn't going to be possible with IPv6 only. So they need to have an IPv4 address as well, not sure if a local address will work for it, but pretty sure it should. I added 169.254.1.100 in the container .conf file, but when I try to start it, I get this : Adding IP address(es): (the IPv6 address) 169.254.1.100 arpsend: 169.254.1.100 is detected on another computer : 00:04:9b:f2:b0:00 vps-net_add WARNING: arpsend -c 1 -w 1 -D -e 169.254.1.100 eth0 FAILED I did a lot of research, and searched serverfault before posting this, but found nothing relating to this.

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  • Beginner server local installation

    - by joanjgm
    Here's the thing I own a small business and currently my emails are being managed by some regular hosting using cpanel and that I bought a small server and installed windows server and exchange Can you tell what I did wrong here Installed and configured my current existing domain Configured all email address Installed noip in case my public address change In the cpanel of the domain I've added an MX record to the noip domain of the server with priority 0 so now emails are being received by my own server Now whenever I send an email to anyone gmail hotmail etc I get a response that cannot be delivered since may be junk This didn't happen when I sent emails from the hosting What's missing what did I do wrong heres the code mx.google.com rejected your message to the following e-mail addresses: Joan J. Guerra Makaren ([email protected]) mx.google.com gave this error: [186.88.202.13 12] Our system has detected that this message is likely unsolicited mail. To reduce the amount of spam sent to Gmail, this message has been blocked. Please visit http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for more information. cn9si815432vcb.71 - gsmtp Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept e-mail from certain senders, or another restriction may be preventing delivery. Diagnostic information for administrators: Generating server: SERVERMEGA.megaconstrucciones.com.ve [email protected] mx.google.com #550-5.7.1 [186.88.202.13 12] Our system has detected that this message is 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail, 550-5.7.1 this message has been blocked. Please visit 550-5.7.1 http://support.google.com/mail/bin/answer.py?hl=en&answer=188131 for 550 5.7.1 more information. cn9si815432vcb.71 - gsmtp ## Original message headers: Received: from SERVERMEGA.megaconstrucciones.com.ve ([fe80::9096:e9c2:405b:6112]) by SERVERMEGA.megaconstrucciones.com.ve ([fe80::9096:e9c2:405b:6112%10]) with mapi; Thu, 29 May 2014 11:32:19 -0430 From: prueba <[email protected]> To: "Joan J. Guerra Makaren" <[email protected]> Subject: Probando correos Thread-Topic: Probando correos Thread-Index: Ac97V1eW4OBFmoqJTRGoD7IPTC2azg== Date: Thu, 29 May 2014 16:04:35 +0000 Message-ID: <[email protected]> Accept-Language: en-US, es-VE Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: Content-Type: multipart/alternative; boundary="_000_000f42494487966276f7b241megaconstruccionescomve_" MIME-Version: 1.0

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  • RSync over SSH hangs and fails with timeout

    - by tx2
    Client: Gentoo, GCC 4.3.4, RSync 3.0.9 Server: Ubuntu 10.04.4 LTS, RSync 3.0.7 Client and server connectet through is Internet, about 2Mbps. Ping is ok. RSync called on any files in any direction hangs on random file, then, after timeout, fails with: [sender] io timeout after 30 seconds -- exiting rsync error: timeout in data send/receive (code 30) at io.c(140) [sender=3.0.9] [sender] _exit_cleanup(code=30, file=io.c, line=140): about to call exit(30) In 1/10 trys is pass correctly. I've tryed to add SSH options TcpRcvBufPoll=yes, KeepAlive=yes; disable and enable rsync compression -- no changes. How can i make rsync works properly?

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  • How do I convert ms/line to ppm

    - by user4941
    I'm looking at buying a scanner with a document feeder. The feeder can feed in 30 ppm, but the scanner can only can at 12 ms/line. So how fast is the scanner scanning? Is having such a fast document feeder useless?

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  • Complete machine freezes...at a loss

    - by user28818
    Guys, We built around 12 machines a few months ago to run Ubuntu. They each have the following specs: ASUS Z8NA-D6 motherboard Dual quad core Intel(R) Xeon(R) CPU E5520 @ 2.27GHz OCZ Mod Extreme Pro 500W power supply 12 GB Kingston RAM Nvidia GeForce 9800 GT graphics card My machine ran well for awhile. However, it started experiencing random lockups. These lockups are not X lockups, they are complete system freezes. The nic stops responding, the magic sysrq buttons won't work. The machine is dead. I first suspected RAM. Memtest86 didn't find anything, but I replaced the RAM anyway. Still, lockups. So I replaced the graphics card. Still, more lockups. They became more and more frequent and started to happen 2-3 times a day. So I replaced the motherboard and power supply in one fell swoop. Suddenly, no more lockups! Woohoo! Except, a week later, in the morning, the machine wouldn't wake up. I reset it, started it up, and the log files showed the last entry at around 11 pm the evening before. This has started occurring with more frequency...now just about every morning I come in, the machine is locked up, and has been since the night before. Yesterday, in the 3 weeks since I replaced the motherboard and power supply, the machine actually locked up on in in mid-work. This is the first time since replacing the two (MB and PS) that this happened while I was using it. All others occurred while I was away. I'm at a loss. Nothing is in syslog or message that would indicate a problem around the time of the lockup. Temps are good...I use lmsensors to monitor and have a script that writes the output to file every minute. They never get that high. The only thing I haven't replaced at this point is the case and the harddrives. I doubt either could be the cause. What would you do if you were in my shoes? Is there a troubleshooting approach I'm missing? For the record, all of the other machines, all eleven of them, don't have any problems. They're all running the same version of Ubuntu (Lucid) that I am. Thanks!

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  • How do I disable Aero transparency in Firefox 4?

    - by Titus
    I noticed that the transparent interface in Firefox 4 for Windows 7 is really curbing performance. After Googling for a method to disable Aero for Firefox, however, I got no results. There just doesn't seem to be a straight forward (such as a simple Boolean to turn it off in about:config) method to get rid of Aero effects. Is it even possible in the Firefox 4 beta? I'm using Firefox 4 beta 12 (soon to be beta 13 after the update).

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  • Rename X11 input devices with hotplugging?

    - by buergi
    Is it possible to change the X11 input device identifiers, as they are for example listed by xinput? Preferably without switching to a static xorg.conf configuration, I'm using xorg-server 1.12.4 (archlinux). I need to do that since, as it seems Blender identifies the Pen and Eraser of a graphics tablet using the hardcoded names "stylus" and "eraser" but by default the names of my tablet are prefixed with the type e.g. "Wacom Bamboo 16FG 4x5 Pen stylus".

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  • Mac OSX DHCP Stopped Working [on hold]

    - by Jesse James Richard
    Tethering a Raspberry PI to a MacBook (Mavericks) via ethernet is proving to be a real pain. This worked for about a day. My MacBook required a rare reboot and once it came back up the Pi won't get an address. I've confirmed it's not a problem with the Pi. It's a problem with the MacBook for sure. It's basically just stopped giving out IPs. I've read as much as I've found about how to fix this friggin' problem, but I've thus far come up blank. Internet sharing Wi-fi Ethernet enabled, and/or Edited /etc/bootpd.plist as described here (http://www.jacquesf.com/2011/04/mac-os-x-dhcp-server/ - this worked initially and now no longer does) Pi connected directly to the router has no problems. My MacBook DHCP server will no longer give out addresses. Any help would be much appreciated.

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  • EasyVPN client Access mutiple subnet behind cisco 5510

    - by zatrac
    I need help with the following scenario Main network ASA 5510 (one inside 192.168.10.1 connection and one outside connection). This ASA 5510 connect to switch 3570 with 3 VLANS configured (192.168.10.0, 10.10.11.0, 10.10.12.0). On the remote site I have ASA5505 ( 10.10.13.0) connected to this ASA5510 through EZVPN, but all it can see is the 192.168.10.0 subnet. What do I need to do to get the subnet 10.10.13.0 to see all 3 internal subnets.

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  • Unable chage IP address for eth0 without restart in Ubunto

    - by Rodnower
    I have Ubuntu 12.04.1 installed. I try to change IP address of the interface eth0 in /etc/network/interfaces from 192.168.1.3 to 192.168.1.4: auto lo iface lo inet loopback pre-up iptables-restore < /etc/iptables.up.rules auto eth0 iface eth0 inet static address 192.168.1.4 gateway 192.168.1.1 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 sudo service networking status Now I issue: sudo service networking restart I have response: stop: Unknown instance: networking stop/waiting And IP remains 192.168.1.3: eth0 Link encap:Ethernet HWaddr 00:1e:33:71:cd:a4 inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::21e:33ff:fe71:cda4/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:3861 errors:0 dropped:0 overruns:0 frame:0 TX packets:3291 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:3423285 (3.4 MB) TX bytes:521854 (521.8 KB) Interrupt:45 Base address:0x4000 Only after restart IP changing... Any ideas?

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  • gpg4win PGP Error occured

    - by ffffff
    I use gpg4win in Mailer and want to use a PGP email. but I cant solve this pgp error. "The input pass phrase meets neither of the listed key" [Environment] OS: Vista Business SP2 GnuPG 2.0.12(gpg4win) decrypt and encrypt are possible.

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  • IIS7 is gzipping files but not serving the gzipped version.

    - by ptrin
    By following a number of helpful blog posts I have configured IIS to gzip my static files. I have even enabled Failed Request Tracing and filtered to the 200 status code, and I can see the successful compression events taking place as well as the finished headers, which look like this: Headers="Content-Type: text/css Content-Encoding: gzip Last-Modified: Mon, 04 Oct 2010 17:35:08 GMT Accept-Ranges: bytes ETag: "02ef37cea63cb1:0" Vary: Accept-Encoding Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET " However, when I test in Fiddler and Firefox the Content-Encoding header is missing, and the file is not gzipped. This is a similar issue to this question which was never resolved. IIS is generating the gzipped files which I can see in C:\inetpub\temp\IIS Temporary Compressed Files . Does anyone know how I can troubleshoot this?

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  • Take a screenshot of an entire webpage in Opera

    - by robertc
    Is there some tool within Opera, or possibly an add-on, which will let me take a screenshot of an entire web page? I usually use Screengrab to do this with Firefox, but in this situation I want a screenshot of the page as Opera renders it (because I want to show the page as rendered with HTML5 form controls like date and time). I am currently using Opera 10.60 x86_64 on Fedora 12, so solutions that work in browser would be preferable rather than external programs.

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  • advice on memory purchase for AMD 6134 2P server

    - by maruti
    HP DL165G7 with 2x AMD 6134 target RAM: 48GB options: 2GB dual rank registered DIMM - 24 Qty HP-2GB 2Rx8 PC3-10600R-9 Kit 4Gb single rank registered DIMM - 12 Qty HP-4GB 1Rx4 PC3-10600R-9 Kit which of the above is recommended for performance (ESX server)? AMD CPUs suffer any downgrade on mem bandwidth like Xeons?

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  • downgrading the php version

    - by aadiahg
    I used to upgrade my php from 5.3.5-1ubuntu7.11 to 5.3.18-1~dotdeb.0 I got a lot of problems after the upgrading process . My localhost/phpmyadmin displaying the blank screen. apache2 show me a warning message waiting [Sun Nov 04 12:11:21 2012] [warn] The Alias directive in /etc/apache2/conf.d/phpmyadmin.conf at line 3 will probably never match because it overlaps an earlier Alias. most of CMS cant installed and show me this error Required MySQL version for CMS is 5.x but this server has: mysqlnd 5.0.8-dev the Scripts that has been already installed some of there functions doesn’t work i've googled a lot to fix this problems also i ve googled about downgrading the php version from 5.3.18 to 5.3.x but it doesn’t work with me Can you help please Many thanks

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  • Can IOS be upgraded on a Cisco Catalyst 6509 switch without downtime?

    - by Massimo
    There's this Cisco Catalyst 6509 switch with 2 (two) supervisor modules; one of them is active, the other is (almost always) in standby. We need to upgrade IOS; current version is 12.2.something (I can check exactly which one, if this does matter). Can this be done without service interruption? Something like "upgrade the standby supervisor, activate it, upgrade the other one"?

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  • linux permission for windows mounted partition

    - by monucool
    I have installed windows 7 and linux opensuse in my laptop. In linux the windows is mounted under /windows/A OR B OR C OR D When ever i write or do a touch in any of this location it says permission denied The permission for /windows on running ls -l on root partition is as follows : drwxr-xr-x 1 root users 32768 Nov 12 11:00 Windows what should i do to get the permissions for writing or deleting a file?

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  • How to secure a new server OS installation

    - by Pat R Ellery
    I bought (and just received) a new 1u dell poweredge 860 (got it on ebay for $35). I finished installing Ubuntu Server (Ubuntu Server 12.04.3 LTS), install apache/mariadb/memcache/php5 works great but I am scared about security. so far I am the only one using the server but eventually more people (friends, friends of friends) will use this server, use ssh etc... I want to know what can I do to secure all the information and not get hacked, both from the web or ssh or ddos and any other attack possible. Does Ubuntu Server does it for you right away? or I have to fix it my self? Thank you EDIT: I installed (so far): All dev tools ssh server LAMP I didn't install: Graphical interface

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  • Exclude localhost from htt_proxy

    - by Chilloutman
    I'm trying to access a server that is running locally on my machine (localhost). I'm using the "wget"-command to download the servers http-response. I've also tried using the "curl"-command to do this, but both (wget and curl) are trying to get through my proxy-server and failing at it: --2010-05-04 09:05:34-- http://localhost:8080/api/getplist ... Proxy request sent, awaiting response... 503 Service Unavailable 2010-05-04 09:05:35 ERROR 503: Service Unavailable. Obviously they shouldn't need to go through the proxy, right? So I disabled the http_proxy: export http_proxy="" And then it worked fine. Disabling the the http_proxy every time or permanently are no options. How can I set it to ignore the proxy settings when accessing "localhost"?

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  • How long would this file transfer take?

    - by CT
    I have 12 hours to backup 2 TB of data. I would like to backup to a network share to a computer using consumer WD 2TB Black 7200rpm hard drives. Gigabit Ethernet. What other variables would I need to consider to see if this is feasible? How would I set up this calculation?

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