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• Making Google Talk messages appear on all logged in clients

  - by Ryan Hayes

  We're using Google Talk as our unofficial-official chat client around the office at work. One thing that poses a big problem almost every day is the fact that Google Talk only sends a message to the clients that you last used. Even though you may be logged into GTalk on 3 different machines, if you start talking on one machine, that becomes your "active" machine, and if you go to another machine, you will still only get messages on the last active machine. Is there a way that you can force Google Talk to send messages to ALL logged in clients, regardless of which client you are actively using? That way, you don't miss any messages during the time between when you get up from the active machine and then make the new client "active".

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• Sendmail delivering locally instead of to MTA in MX record

  - by CreativeNotice

  Ok, so I've got a box named websrv1.mydomain.com. It's a web server running ubuntu, apache2, sendmail, etc. My email is outsourced to a third party. So in my DNS I've got MX set to mx.thirdparty.net. I've no reason to accept incoming mail on my web server, every email should be sent to the third party. This works correctly accept with sending mail from the webserver (aka via cron or console). So from my web server, if I send an email to [email protected], it just disappears. No errors, nothing in dead.letter, nothing. I can send to any other address with no issues. If I send to [email protected] it's delivered locally which is fine. 1) Doing an nslookup shows the mx record is correct. 2) Running /mx mydomain.com from sendmail -bt returns the correct result. 3) Running sendmail -bv [email protected] returns: sudo sendmail -bv [email protected] [email protected]... deliverable: mailer esmtp, host mydomain.com., user [email protected] 4) Running 3,0 [email protected], returns: 3,0 [email protected] canonify input: me @ mydomain . com Canonify2 input: me Canonify2 returns: me canonify returns: me parse input: me Parse0 input: me Parse0 returns: me Parse1 input: me MailerToTriple input: me MailerToTriple returns: me Parse1 returns: $# esmtp $@ mydomain . com . $: me parse returns: $# esmtp $@ mydomain . com . $: me So I'm at a loss. Sendmail seems to see the mx record, but it's not using it.

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• Centos livecd of current installation

  - by mplacona

  I'm trying to create a liveCD of my current Centos installation. i want it to be almost like a backup, so whenever I want to copy my current installation to another computer I would simply install from my custom liveCD. I know this is possible, and found some resources in the nets, but they all seem to only create a minimal version of CENTOS, and I'm wanting to have all the current functionalities available to me at present, including all of my development functionalities, Apache and samba settings, etc. I have done (on Debian though) it a few years ago, but can't remember how. could anyone please shed me a light on this? Thanks in advance

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• Apache mpm-itk Performance

  - by Matt Beckman

  I manage a bunch of VPSs with memory ranging from 1GB to 8GB. Most of these websites are Joomla websites, and the servers must support multiple sites/users/S-FTP. I use mpm-itk almost exclusively (mostly due to it's convenience in these shared environments). However, I'm aware it isn't known for performance, so I need some advice on making it faster. Due to the lack of documentation when I first went the way of mpm-itk, I included only one setting in the config, and that was to limit each user to 50 clients (the rest I left up to defaults): <IfModule mpm_itk_module> MaxClientsVHost 50 </IfModule> Are there any better alternatives available? Are there any settings supported in mpm-prefork or mpm-worker that are also supported in mpm-itk? Thanks!

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• apache performance improvements and maxclients

  - by updog

  I know this has been asked a few (thousand) times around the internet but I was hoping someone whose in the know might be able to comment on my particular setup. I have a web server hosting one site (php/codeigniter) with a wordpress blog in a sub directory. The server has 2GB RAM, 3GHz CPU and I have offloaded the static assets to CloudFlare which is has reduced bandwidth for the actual server by almost 75%. The problem I have is when an email campaign is sent out that links to the site or blog, it slows down. Below is my settings in apache2.conf. Average apache process size is 80M and there is 1.5GB available for apache. <IfModule mpm_prefork_module> StartServers 8 MinSpareServers 5 MaxSpareServers 20 MaxClients 20 MaxRequestsPerChild 2000 </IfModule> I have already setup and installed apc and built some caching into the site and used w3totalcache on the blog. The number of concurrent users is around 2-300 when there is a campaign, are there any further optimisations before

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• Which linux distro for a laptop in windows environmet?

  - by Dev er dev

  I just got new laptop at work. What would you recommend as a linux distribution for it? All other developers are working under windows, and use windows tools. I'm currently using ArchLinux, but want to change it. I don't want to waste time configuring wireless, windows network shares, network pritners, projector, etc ... I want this stuff to just work, while still having sane and stable development evironment and tools. Is Ubuntu a good choice for this? I use gentoo at home, but don't think it is a good match for work environmet. EDIT: Note that we are working on cross platform apps, and deployment platform is almost always linux. There are very few windows apps that I have to use (like MS Project). It is just that everything else is windows centric. I use linux because I feel more productive with it, even if I have to dual boot to edit MS Project files.

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• Linux & Windows Boot Up Times in Amazon Web Service and Windows Azure

  - by Adron

  I've been working with Windows Azure and Amazon Web Services EC2 for a good many months now (almost getting to the years range) and I've seen something over and over that seems troubling. With AWS & Linux I commonly get instance startup times with EC2 around the 1-3 minute range. With AWS & Windows OS on an EC2 instance it often takes 10-20 minutes. With Windows Azure Web or Service Role I often get anywhere from 6-30 minutes waiting for a role to startup. I assume of course this involves booting up a windows instance somewhere in the fabric. I know there has always been tons of FUD about windows vs. Linux, but I'd really like to know why it is that Windows 08 or 03 boots so much slower in the cloud than Linux. Any specific technical information regarding this would be greatly appreciated! Thanks.

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• Can't edit an account in MySQL Administrator on OS X

  - by Wavy Crab

  I'm running MySQL 5.5.20 on OS X 10.6.8. Using MySQL Administrator 1.2.12 (the latest) I am unable to edit any accounts. After successfully connecting to the database in MySQL Administrator, I go the Account tab, expand a user, and it just says "Loading...". It will stay on "Loading..." indefinitely. The symptoms are almost identical to user's experience and this MySQL bug from 2006, which has since been closed (fixed?). If I create a user and grant permissions to a schema, I get the error "Could not save changes to the use", which came up in 2005 as a bug (now closed). How do I edit MySQL accounts using MySQL Administrator?

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• Understanding the memory consumption on iPhone

  - by zoul

  Hello! I am working on a 2D iPhone game using OpenGL ES and I keep hitting the 24 MB memory limit – my application keeps crashing with the error code 101. I tried real hard to find where the memory goes, but the numbers in Instruments are still much bigger than what I would expect. I ran the application with the Memory Monitor, Object Alloc, Leaks and OpenGL ES instruments. When the application gets loaded, free physical memory drops from 37 MB to 23 MB, the Object Alloc settles around 7 MB, Leaks show two or three leaks a few bytes in size, the Gart Object Size is about 5 MB and Memory Monitor says the application takes up about 14 MB of real memory. I am perplexed as where did the memory go – when I dig into the Object Allocations, most of the memory is in the textures, exactly as I would expect. But both my own texture allocation counter and the Gart Object Size agree that the textures should take up somewhere around 5 MB. I am not aware of allocating anything else that would be worth mentioning, and the Object Alloc agrees. Where does the memory go? (I would be glad to supply more details if this is not enough.) Update: I really tried to find where I could allocate so much memory, but with no results. What drives me wild is the difference between the Object Allocations (~7 MB) and real memory usage as shown by Memory Monitor (~14 MB). Even if there were huge leaks or huge chunks of memory I forget about, the should still show up in the Object Allocations, shouldn’t they? I’ve already tried the usual suspects, ie. the UIImage with its caching, but that did not help. Is there a way to track memory usage “debugger-style”, line by line, watching each statement’s impact on memory usage? What I have found so far: I really am using that much memory. It is not easy to measure the real memory consumption, but after a lot of counting I think the memory consumption is really that high. My fault. I found no easy way to measure the memory used. The Memory Monitor numbers are accurate (these are the numbers that really matter), but the Memory Monitor can’t tell you where exactly the memory goes. The Object Alloc tool is almost useless for tracking the real memory usage. When I create a texture, the allocated memory counter goes up for a while (reading the texture into the memory), then drops (passing the texture data to OpenGL, freeing). This is OK, but does not always happen – sometimes the memory usage stays high even after the texture has been passed on to OpenGL and freed from “my” memory. This means that the total amount of memory allocated as shown by the Object Alloc tool is smaller than the real total memory consumption, but bigger than the real consumption minus textures (real – textures < object alloc < real). Go figure. I misread the Programming Guide. The memory limit of 24 MB applies to textures and surfaces, not the whole application. The actual red line lies a bit further, but I could not find any hard numbers. The consensus is that 25–30 MB is the ceiling. When the system gets short on memory, it starts sending the memory warning. I have almost nothing to free, but other applications do release some memory back to the system, especially Safari (which seems to be caching the websites). When the free memory as shown in the Memory Monitor goes zero, the system starts killing. I had to bite the bullet and rewrite some parts of the code to be more efficient on memory, but I am probably still pushing it. I

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• Old HP computer powers off after seconds, hard drive still spins. Power supply? Motherboard?

  - by Chase

  Someone called me saying their computer keeps shutting off. I brought it home to troubleshoot. It's an HP Pavilion 513c. The computer powers on normally but almost immediately powers off. Sometimes it manages to make it to a fully loaded desktop and other times it powers off during the boot process. The hard drive still spins but there is no video and the CPU fans quit spinning. The power has to be unplugged before you can turn it back on again. I'm thinking it's either a motherboard or power supply issue. I don't have a spare of either component laying around to test with. Any guess on which part is more likely to be the culprit? Thanks.

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• EEE PC Keyboard malfunctioning - Ctrl key "sticks" after 10 seconds

  - by DWilliams

  I was given a EEE PC belonging to a friend of a friend to fix. The keyboard did not appear to work at all. I spent a while testing out various things, blowing the keyboard out, checking for damage, and so on. Nothing appeared to be physically wrong. At first I noticed that the keyboard appeared to work just fine for 10 seconds (on average, sometimes more sometimes less) after being powered on. It had been restored to the factory default xandros installation with no user set up, so I couldn't get in to mess with things since I couldn't type to make a user. I made an ubuntu live USB to boot it from, and managed to get the boot order changed to boot from USB in the ~10 seconds of working keyboard I had (I don't think I've ever had to rush around BIOS menus that quickly). After I got Ubuntu up on it, I played around a bit more and determined that apparently the ctrl key is stuck down (not literally, but it's on all the time). If I open gedit, pressing the "o" key brings the open dialog, "s" opens the save dialog, and all other behaviour you would expect to see if you were holding down the control key. The only exception that I noticed is the "9" and "0" keys. They function normally. Figuring that out I made a xandros user with a name/password consisting of 9's and 0's. I couldn't find any options in Xandros that could potentially be helpful. I'm not familiar with EEE PCs. Is it safe to assume that the keyboard is simply dead or could there be another problem? I don't want to purchase another keyboard for him if that isn't going to fix the problem. The netbook doesn't show any obvious signs of damage but the owner is a biker and very often has it with him on the road so it's been subjected to a good bit of vibration.

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• Windows Server 2008 R2 SP1 Drivers Missing Would Not Install?

  - by bleepzter

  I am building my dev machine with WS2008R2SP1. I consider Windows Server as the best development environment for C# since I tend to focus on server-centric (integration) applications. The desktop flavor of Windows (7) doesn't play nicely with things like Commerce Server or BizTalk... so I to like stick to the environment I develop for. Previously I used to develop inside of VM's but I've found that it is super inefficient and tends to take a toll on the laptops. (I've gone through two of them in 6 months). Problem is that I multiple devices that do not want to be recognized by Windows: My machine is Dell Precision M4500: Intel Core i7-Q740, 1TB HDD, 8GB RAM, Dell re-branded Broadcom DW1501 802x11n Half-Mini Card, Dell re-branded Broadcom DW375 Bluetooh Module, Intel 82577LM Gigabit Network connection NVidia Quadro FX1800 Graphics The devices in question are the Dell rebranded broadcom network and bluetooth adapters: Broadcom USH: USB\VID_0A5C&PID_5800&REV_0101&MI_00 USB\VID_0A5C&PID_5800&MI_00 DW375 Bluetooth Module USB\VID_413C&PID_8187&REV_0517 USB\VID_413C&PID_8187 When I ran the broadcom installers I get "Operating System not supported" which I think is a big oversight on Broadcom's part. Why check for system version string? UGHGHGH Moreover if I try to manually force the driver in windows... I get an error: Driver Management concluded the process to install driver FileRepository\btwampsecfl.inf_amd64_neutral_d8fc2b85d035ed47\btwampsecfl.inf for Device Instance ID USB\VID_0A5C&PID_5800&MI_00\7&66DE6C9&0&0000 with the following status: 0xe0000217. '- or - Driver Management concluded the process to install driver FileRepository\btwampfl.inf_amd64_neutral_d4c4acf036c61299\btwampfl.inf for Device Instance ID USB\VID_413C&PID_8187\90004EEEF5A6 with the following status: 0xe0000217. I googled the 0xe0000217 error code and it says Bad service install section in the driver inf file... Any ideas on how to fix this? I also tried the post by BetaIQ on MSDN Forum, unfortunately the links to the driver package included in the post were dead :( PS. On a side note I also do mobile development for Android, iOS, and Windows Phone, and BB. Having the bluetooth is quite useful with mobile devices.

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• Cisco SG 300-28P PoE switch appears to have damaged my domain server's network IF

  - by cdonner

  I just replaced the old HP ProCurve switch with a new Cisco SG 300-28P managed switch. It has PoE on all ports. Everything works, except for my domain server that went offline and the network interface appears to be dead. Windows says the network cable is disconnected, and no lights blink on the switch. Tried different cables and different ports on the switch. The Cisco PoE ports are supposed to be auto-sensing, i.e. not to send power to a device that cannot handle it. Is this technique not 100% reliable? The server is a SHUTTLE XS35V2 with an onboard network chip, so it is probably fried. My questions: is this plausible? who's fault is it - Shuttle or Cisco (i.e. which support line should I try first)? UPDATE: I did go back and tried another switch between the server and the Cisco switch, and indeed, the connection came back to live. When everything is powered down and I start fresh, with the server connected to the Cisco switch, the port light will blink for a while and the connection status is "No Internet connection" at first until it goes off after about 20 seconds and the connection status changes to "Network cable disconnected". On the other switch it works. Clearly not a PoE issue now. I will start looking into the Cisco's onboard diagnostic functions, but so far I have not noticed anything unusual in the log.

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• Why is my ogg bigger then my m4a?

  - by acidzombie24

  i am using ffmpeg.exe -i 0123456789 -ab 192k out.m4a ffmpeg.exe -i 0123456789 -f wav - | oggenc2.exe - -r -q 6 -o out.ogg (0123456789 has no extension). My m4a output is 14,608kb while my ogg output is 19,809kb why? AFAIK -q 6 is roughly 192kb. So it should be about even. I could see one file being 1-3mb bigger then the other but 5 is pretty large. the m4a is almost 75% of the ogg! thats a lot! Why is this?

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• Macbook Pro suddenly lagging video playback + Flash sites

  - by Mathias

  I have a Macbook Pro, OSx Lion, Intel Core2 Duo, 4GB Ram, NVidia Geforce 8600M GT 128 MB Ram, Intel x25m SSD. Approximately 4 years old. I've been running Flash sites and playing videos without any problems for years. Then suddenly 3 months ago, a flash site like http://thefwa.com is lagging in all browsers. Even mouseover animations - anything. Also video playback in e.g VLC and Quicktime is now lagging. Same videos I used before, I tried installing an older version of VLC without any luck. Playing back video in VLC utilizes the CPU almost 100%, and Flash sites like thefwa.com easily takes up 50-60%. It's as if the hardware acceleration stopped working, or the GPU lost its magic. UPDATE: Same issues also occurred on Snow Leopard Has anyone experienced something similar, or do you know what might be wrong?

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• Difference between XeTeX and LuaTeX

  - by Konrad Rudolph

  I have a hard time contrasting XeTeX and LuaTeX. At the moment, I am using XeTeX almost exclusively, mainly because it uses UTF-8 as the native input encoding and because it supports TTF and OTF fonts. However, the lack of support for pdftex’ microtyping is mildly annoying. LuaTeX, on the other hand, does support this, as well as UTF-8 input and (rudimentary?) fontspec support. So my question boils down to: Is there any advantage in using XeTeX over using LuaTeX? Has anybody used both and can compare them? In particular, LuaTeX sounds very experimental and unstable – but is this really the case?

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• Connectivity good between VMs, but no connectivity between host and VM

  - by Greg Sansom

  I have a strange situation where connectivity (ie ping, access shared folders and services) is fine between virtual machines, but not between the host and the virtuals. I've been using Hyper-V almost every day for years and have never had a problem like this. Note the following: The host machine and all virtuals are running Windows Server 2008 r1. All machines can connect to the web, and the gateway router. Subnet mask and gateway reported in ipconfig are identical for all machines. I can access virtuals via the Hyper-V snap-in only. Doea anyone have suggestions about what might be wrong, or what diagnostic steps I can take?

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• Google images sometimes terribly slow when using dnsmasq

  - by Joril

  Hi everyone! I am the admin of a small LAN of 10+ computers. I've set up a dnsmasq server for DHCP and DNS resolution, and it's working almost fine.. My problem is that when I try to use Google images, sometimes it takes ages to show the actual images. I get just the textual part of the page (menus and so on) while the images themselves are shown as the still-loading-white boxes.. When I use the DSL router directly as DNS, the site works fine all the time. The problem sometimes presents itself with Google maps too.. The map takes ages to load. Any idea on what I could try to troubleshoot this? (dnsmasq 2.47 on CentOS 5.2 64bit, our outside connection is an asymmetrical 4Mbps DSL)

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• Google images sometimes terribly slow when using dnsmasq

  - by Joril

  Hi everyone! I am the admin of a small LAN of 10+ computers. I've set up a dnsmasq server for DHCP and DNS resolution, and it's working almost fine.. My problem is that when I try to use Google images, sometimes it takes ages to show the actual images. I get just the textual part of the page (menus and so on) while the images themselves are shown as the still-loading-white boxes.. When I use the DSL router directly as DNS, the site works fine all the time. The problem sometimes presents itself with Google maps too.. The map takes ages to load. Any idea on what I could try to troubleshoot this? (dnsmasq 2.47 on CentOS 5.2 64bit, our outside connection is an asymmetrical 4Mbps DSL)

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• Sleep/Suspend and WOL on FreeNAS

  - by Timothy R. Butler

  I am trying to figure out how to get FreeNAS 8 to sleep when inactive and, ideally, wake on lan activity (or, less ideally, wake on a WOL magic packet). However, as I've tried to search for information on how to do this, almost all discussions seem to be centered on FreeNAS 7. Also, the tools included in FreeBSD to do this seem to be missing (i.e. acpiconf, etc.). Is there a way to get FreeNAS 8 to sleep and wake so that I don't have to leave the server running all the time? Given its usage level, it seems a waste to have the server running constantly.

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• Opinions on NTFS for Mac solution?

  - by AngryHacker

  I am currently using the free NTFS-3G to access my NTFS drive from the Mac. It seems pretty stable (except once in the very beginning, it locked up the Mac and corrupted my NTFS drive, which I then fixed with chkdsk from a PC). However, speed is NOT one of its virtues. In fact, it's painfully slow I've been looking at buying Paragon NTFS for Mac OS X 8.0. Their product comparison PDF claims nearly double the speed (vs NTFS-3G) in almost every category (read, write, etc...). In addition, there is now an unsupported native solution with the snow leopard. Can folks here share their experiences. Is the native solution stable enough to be used for daily work? Should I just go with Paragon?

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• Can't create new folder from anywhere in Windows 7

  - by ymasood

  I have this problem on two of my new laptops and can't seem to find a decent workable solution elsewhere in forum land. The problem is that on my Windows 7 Professional machines the right mouse button doesn't show the New Folder option and elsewhere as well (via Explorer) I'm unable to create new folders. I'll be happy to get this tiny problem resolved and declare that Windows 7 is almost perfect! Thanks to all of you in advance for your contribution! PS: None of the Vista solutions seem to work here!

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• Can't bind spawn-fcgi to address

  - by Xeoncross

  Following some nice instructions I am almost through setting up PHP to run on nginx. However, every time I try to start spawn-fcgi I get an error message demo@desktop:/usr/bin$ sudo /etc/init.d/php-fastcgi start spawn-fcgi: bind failed: Cannot assign requested address My /etc/init.d/php-fastcgi startup script is: #!/bin/bash PHP_SCRIPT=/usr/bin/php-fastcgi FASTCGI_USER=demo RETVAL=0 case "$1" in start) su - $FASTCGI_USER -c $PHP_SCRIPT RETVAL=$? ;; stop) killall -9 php5-cgi RETVAL=$? ;; restart) killall -9 php5-cgi su - $FASTCGI_USER -c $PHP_SCRIPT RETVAL=$? ;; *) echo "Usage: php-fastcgi {start|stop|restart}" exit 1 ;; esac exit $RETVAL console output which loads /usr/bin/php-fastcgi #!/bin/sh /usr/bin/spawn-fcgi -a 127.0.0.1 -p 9000 -C 6 -u demo -f /usr/bin/php5-cgi One thing to note is that I am running the PHP cgi as the user "demo" which is my account.

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• Belkin Flip KVM keyboard skip problems

  - by Craig

  I have just bought a Belkin Flip 2 port KVM. Functionally it is almost there except I have a keyboard sticking problem. So if I type the word 'Hello' it will often (about 25% of the time) output 'Hellooooooooooooooooooooo'. If I plug the keyboard directly into the USB on the computer I don't have this problem, only when plugged into the KVM. I feel like it is a USB speed problem. Followup It appears I have the same problem with the mouse, it will jump from one side of the screen to the other as I move it. The mouse is annoying but half as much as the keyboard.

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• Slow network file access with VMWare Server and Windows 7

  - by garethm

  I have Windows 7 32-bit virtual machine running in a VMWare Server virtual machine. The host is Windows 7 64-bit. When I copy files between them it is extremely slow - it will take several minutes to copy even a 1 MB file. I can upload the file to an website and then download it again almost instantaneously by comparison. Browsing the network is quite zippy and has no problems. I have been unable to set up a HomeGroup between the computers though - the guest always times out without managing to get setup. Any ideas on how I should go about tracking down where the problem is?

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