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• In Linux, is it possible to get a listing of drives' disk space usage that also shows volume labels?

  - by DavidH

  I know about df, of course, but df does not output volume labels. I have 5 USB hard drives plugged into my NAS box, and would love to know which is which. Current df output: Filesystem Size Used Avail Use% Mounted on /dev/sda1 27G 2.2G 24G 9% / none 56M 476K 55M 1% /dev none 60M 0 60M 0% /dev/shm none 60M 332K 59M 1% /var/run none 60M 0 60M 0% /var/lock none 60M 0 60M 0% /lib/init/rw /dev/sde1 150G 102G 48G 68% /media/usb0 /dev/sdb1 299G 196G 103G 66% /media/usb1 /dev/sdc1 233G 183G 51G 79% /media/usb2 /dev/sdd1 233G 209G 25G 90% /media/usb3 /dev/sdf1 150G 101G 49G 68% /media/usb4

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• NetworkManager detects no networks with a RTL8188CE

  - by Cormac O'Brien

  I'm on a 2011 Lenovo Thinkpad T420i with a Realtek RTL8188CE WiFi adapter. Here's the scenario: I pop in the Ubuntu LiveCD to install. Laptop detects all networks in range, I connect to my home network, internet working great. Once Ubuntu finishes installing, the home network I am connected to is the only one which appears in the applet list. Upon restarting or waking from suspend, NetworkManager does not detect any networks – it simply displays "Disconnected" under the Wireless Network section of the menu. I am able to connect to my home network by using the "Connect to Hidden Wireless Network" option and it works immediately. I have yet to test if this works with other SSIDs. I have tried reinstalling the entire OS as well as NetworkManager and my wireless drivers. For hardware info, I ran: cormac@cormac-T420:~$ sudo lshw -c network Here is the output for my wireless card: *-network description: Wireless interface product: RTL8188CE 802.11b/g/n WiFi Adapter vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: 01 serial: d0:df:9a:08:73:50 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rtl8192ce driverversion=3.2.0-26-generic firmware=N/A ip=192.168.1.138 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn resources: irq:17 ioport:5000(size=256) memory:f2500000-f2503fff I can provide more information if required. This was not a problem in Natty or Oneiric. I hope this can be fixed, I don't want to have to ask for an SSID wherever I need to connect.

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• How to embed woff fonts for iframe source pages?

  - by Mon

  I am trying to make and embed a slideshow (of text, photo, audio, video, etc) in my site (HTML5) by loading webpages consecutively inside an iframe embedded in my first page. Most or all of the frame source pages, i.e. pages loaded inside first iframe are mine, but located in many different places. All of these pages are in an Indic language. Although I can use UTF-8 charset and lang="" declaration and that's probably enough functionally, but I also want to embed my preferred Indic unicode font in WOFF format via CSS3 @font-face rule , so the size and look of the text is uniform and the way I want it - throughout the slideshow. Problem is, there are many many pages in the slideshow all located in various places with many more linked pages, and it is next to impossible, or at least would be extremely tedious, to embed my custom WOFF font in every single page (which will also require separate css and uploading of fonts in every single instance). Besides, this may make the slideshow very heavy, sluggish and cumbersome for the user, since it will have to load the custom Indic font again and again everytime a new page is loaded in the iframe. I am not sure about this though. Is that how it works? I ask this, because I noticed that when I embedded my custom WOFF font in the 'first' page, it did not have any effect on the pages loaded inside the iframe. If I embed the font in some of the pages in the iframe, the next pages still don't get my font. Is there a way to embed my custom WOFF font only once, preferably in the first page where the first iframe is, and pass its effect on to all the pages embedded / loaded through the iframe and make their text show up as per my initially embedded woff font - without embedding my font in every single of them? Please help!

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• Is a memory upgrade a viable option to fix performance issues? [closed]

  - by ratchet freak

  I'm currently seeing my PC getting bogged down by Firefox 11.0 alone with only one hundred tabs open. Resulting in a memory use of over 530M , VM size of over 800M and an insane amount of page faults (easily reaching 100 million over the course of the day). The PF delta during normal operation easily reaches 7k with peaks to 15k sometimes reaching over 20k. This leads to a (real) deterioration to response time when switching, opening and closing tabs, opening menus, typing, ... My question is: Am I right in assuming that plugging in more RAM (either adding 2x1GB or replacing the existing RAM with 2x2GB or 4x1GB) will solve this problem? My specs: Windows XP Home Edition SP3 (32 bit) Intel Core Duo 2,4 GHz 2x512MB RAM 800MHz DDR2 (dual channel) 4MB unified cache 320GB HDD Intel G33 (X3100) onboard graphics (no graphics card but PCI express x16 slot is available)

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• SVN Checkout error on large repositories

  - by Brian Mitchell

  I wonder if anyone can help me. We have recently migrated our Subversion repository from a VisualSVN Server on Windows to a subversion server on CentOS. The migration was succesfull however we are getting the following error message Error REPORT of svn'/svn/MangoRepository/!svn/vcc/default': Could not read chunk size: Error connection was closed by server (http://servername) Now the workaround for this is simply to perform a update on the repo and it will contine where is left off. Im just wondering if anyone was a permanent fix for this as it can be quite frustrating to repeat my self to 60-70 developers.

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• Can't mount my USB Drive

  - by user996056

  ~> sudo mount /dev/sdb1 /media/Disk Did not find any restart pages in $LogFile and it was not empty. The file system wasn't safely closed on Windows. Fixing. I have a USB Hard Disk and Windows can't detect it. So I tried to open it up on Ubuntu using gparted. Gparted detects the NTFS partition, so everything seems to be fine (note, though, that the total size of the files in this disk is over 1 TB). I tried to mount it using: sudo mount /dev/sdb1 /media/Disk But I got: Did not find any restart pages in $LogFile and it was not empty. The file system wasn't safely closed on Windows. Fixing. Then, the process just sits there blinking. Any ideas on how to fix it? It's taking forever ( 10 minutes), should I wait or cancel it and do something else? Thank you in advance.

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• Postgres Remote Access

  - by boot-baby-boot

  I am trying to connect to postgres remotely.I have followed this tutorial http://www.cyberciti.biz/faq/howto-fedora-linux-install-postgresql-server/ and have executed the following commands to see if the remote access is possible. [root@printmyworld ~]# egrep -i "(listen_addresses|port|tcpip_socket).*=.+" /var /lib/pgsql/data/postgresql.conf #listen_addresses = '*' # what IP address(es) to listen on; #port = 5432 [root@printmyworld ~]# lsof +c0 -anPiTCP -upostgres COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME postmaster 9323 postgres 3u IPv4 2875987353 TCP 127.0.0.1:5432 (LISTEN ) postmaster 9323 postgres 4u IPv6 2875987354 TCP [::1]:5432 (LISTEN) I am suspicious of this line: postmaster 9323 postgres 3u IPv4 2875987353 TCP 127.0.0.1:5432 (LISTEN My server ip address is 1yy.000.1xx.000 .Should it be 1yy.000.1xx.000:5432

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• OBIEE Capacity Planning

  - by THE

  I can not even recall how many times I was asked by a customer what size the machine should be bought to run our Software. Unfortunately Tech Support is not even the right address to answer that question, as a purchase decision is closely tied to the answer. Hence, Tech Support has been limited to the answer: "The biggest machine you can afford" . Many Customers were unhappy with that and have tried to get us to be more precise and that causes a lot of explanation and lengthy discussion. In the end no one is wiser or happier.  Therefore I am happy to report that at least for OBIEE the decision has just been made a whole lot easier. Have a look at the note Oracle BI EE 11g Architectural Deployment: Capacity Planning (Doc ID 1323646.1) The document attached to that note gives you a good overview for teh sizing of the machines that Oracle recommends to run OBIEE (be it a small installation or a bigger distributed installation) If you have any more questions about this topic and what machines we recommend, then get in contact with  Oracle Consulting or speak to your sales representative.

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• Putting two physical hard drives in a single 2.5" bay?

  - by dgw

  My crazy brain came up with this ridiculous idea. "Why can't I have a single 2.5" drive device that actually contains two independent hard drives? I want RAID 1 data mirroring and the security of having redundant drives. This is a thing that must exist!" To be clear, I am not asking if I can somehow shoehorn two 2.5" drives into a single bay, replace an optical drive with an additional HDD, or anything like that. What I have in mind is a single 2.5"-form-factor device that houses two independent hard drives, with separate housings (likely) and distinct controllers. Probably all they'd need to share is the power & SATA connections. Probably no such thing exists, but because I know there exist hard drives the physical size of a stack of postage stamps (roughly), I have to ask.

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• My 386sx refuses to start in cold days

  - by Armadillo

  My old computer refuses to start in cold days. So, in really hot days (about 40ºC / 104ºF ) or even hotter, this PC usually starts, but in cold days, it wont. When the temperature is not in the "sweet-spot" the power light turns on for an half a second and then the computer turns off. But when it's really cold, not even the power light turns on, nor even a blink. Sometimes I use an Hair dryer, pointed directly to the PSU and that works great. 5 to 10 minutes is enough, depending on the ambient temperature. I think something is going wrong in my AT power supply. I can't replace this PSU for another because it has a non-standard size and connectors to power the motherboard. Does anybody have a clue about what it's failing in my PSU, so I can change that component (resistor, capacitor, ??, etc) and rock on with my 80386? Thanks

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• Installed Windows 7 without formatting disk? Possible?

  - by ile

  I've just installed Win7 but I'm little confused. When booting from XP cd, there is an option to format hard drive. After choosing which partition to format, format process takes usually not less than hour (depends on size of partition), but when I clicked on Format when in Windows 7 installation interface, I received some message (I cant remember what was it, but it was not any error message or something like that) and that was it. After that I choose to install Windows 7 and installation began. "Expanding Windows Files" was the longest process of installation. Was that the part when the hard drive was formatted? I don't understand what happened? Is it possible that my hard drive was not formatted but still installation was successful?

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• VPS showing low disk space despite there is nothing major on it

  - by SheoNarayyan

  Hello experts, On my VPS server I was trying to see the used disk space and when I open My Computer it shows 17.9 GB free out of 39.8 GB it means that 21.9 GB space is used. However, when I select all files and folders from C: and try to see the total size, it just count approximately 11 GB. The difference is around 10 GB. Where is this 10 GB going if I have not stored anything else here? I asked above question from my VPS provider and he responded below Check hidden files/system files/etc. This is default windows OS and its utilization and not specific to setup. If you want specifics of usage, you can go ahead and get in touch with Microsoft support team and they'll provide you with exact specification of the same. I am sure that Windows OS must not be taking up 10 GB space for hidden files and folders. My VPS has Windows Server 2008 R2 installed. Can anyone help me in this on who is right?

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• Master Boot Record

  - by Crystal

  I'm trying to understand what an MBR is. I know it is used to boot the device, like a compact flash card. If you had five 1GB CF card from SanDisk for a camera, would there be any reason for the manufacturer to have different MBRs? It seems like to me, if for some reason one CF card wouldn't boot, you could copy the MBR from a working CF card and write it to the non-working CF card. Would this MBR for a SanDisk card work on the same size Western Digital card for the same use? Thanks!

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• Recommendations for SSD for server and database use?

  - by Tony_Henrich

  SSDs are a new technology and they are constantly improving. A lot of the posts here were posted in 2009 when SSDs where less mature and not as fast. What was recommend back then is probably out of date today because of better options. The SSD is used to hold SQL Server databases. Size is probably 128G. The database is used with a CMS and web server so web pages need to get their data and render as fast as possible. Which modern SSD is recommended for such a use? Is there an SSD better than Intel X-25 E/M in terms of performance/cost? (I am also evaluating cost between : RAM + UPS (semi persistent) vs SSD for same amount of gigabytes. No RAID is involved)

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• bluray playback stuttering/choppy on mac

  - by smashtastic

  I have had a few issues with bluray playback on mac with the following details: 2.4 GHz Core 2 duo NVidia 8600 m GT 256 mb ram 4 GB ram OSX Lion 10.7.5 Using VLC 2.03 for playback Files either mounted as a disc or stored on hardisk. I have tried various sources and playback is always choppy and stutters. Where the video and audio pause for a few seconds before resuming ok. If I transcode the same bluray files into mkv files play back is seemless. I am not applying any compression and the resolution is the same as is the nominal file size. For a recent example 11.2 GB m2ts and 10.5 GB mkv file. This stuttering and choppy playback of bluray files through VLC has occured for a number of different sources. For each of these sources transcoding to mkv solves the stuttering/choppiness. Any ideas on how to resolve this?

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• df -h overreports disk space on VPS

  - by Rincewind42

  When I run the command df -h on my new Ubuntu linux vServer I get the following: # df -h Filesystem Size Used Avail Use% Mounted on /dev/hdv1 466G 33G 434G 7% / none 16M 0 16M 0% /tmp Running du -sh gives # du -sh du: cannot access `./proc/13624/task/13624/fd/4': No such file or directory du: cannot access `./proc/13624/task/13624/fdinfo/4': No such file or directory du: cannot access `./proc/13624/fd/4': No such file or directory du: cannot access `./proc/13624/fdinfo/4': No such file or directory 952M . The VPS should only have 5Gb of disk space but df reports 466Gb. How can I view the correct amount of disk space?

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• Windows 7 treating my third monitor as an extension to my second rather than detecting it as a stand alone

  - by user331837

  I am trying to attach a third monitor to my PC, however I am coming across a rather strange issue. Windows screen resolution is still only showing that I have two monitors connected, but the second has been extended over both the second and third monitors. Basically, it shows as the main display being a normal size, and the secondary as being twice as long as normal. I have my main connected via a the display port, and the second and third are using two of the three mini HDMI ports my video card provides. How do I get windows to accept my third monitor the same as it does my second?

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• Java single Array best choice for accessing pixels for manipulation?

  - by Petrol

  I am just watching this tutorial https://www.youtube.com/watch?v=HwUnMy_pR6A and the guy (who seems to be pretty competent) is using a single array to store and access the pixels of his to-be-rendered image. I was wondering if this really is the best way to do this. The alternative of Multi-Array does have one pointer more, but Arrays do have an O(1) for accessing each index and calculating the index in a single array seems to take one addition and one multiplication operation per pixel. And if Multi-Arrays really are bad, can't you use something with Hashing to avoid those addition and multiplication operations? EDIT: here is his code... public class Screen { private int width, height; public int[] pixels; public Screen(int width, int height) { this.width = width; this.height = height; // creating array the size of one index/int for every pixel // single array has better performance than multi-array pixels = new int[width * height]; } public void render() { for (int y = 0; y < height; y++) { for (int x = 0; x < width; x++) { pixels[x + y * width] = 0xff00ff; } } } }

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• background screen recording tool

  - by misha nesterenko

  I am searching for a tool that allows background recording of my pc screen. I it is nothing like a spy tool, I just need to be able to check what I was doing at the some time in the past. Small impact on the system, and relatively small size of recordings, as it is supposed to run all time pc is turned on. Some recording management as auto pruning of recordings older than x days. UPD This is not a problem if some scripting is necessary to achieve what is described in the question. So it could be a command line recording tool which could be used from batch, bash (cygwin, mingw) scripts.

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• How to solve the problem that Chrome doesn't obey "Show Window side by side" on Win7?

  - by Jian Lin

  If I bring out Firefox and Chrome, and right click on the task bar and choose "Show Windows side by side", Chrome will not be arranged side by side. But if it is Firefox and IE, then the 2 windows will in fact be arranged side by side. If it is Chrome showing and we press and hold "Window key" and LEFT ARROW, then in fact it does move to the left as a half size window. So Chrome partially work on Win7 for the expected behavior. Any method to make it work for the first case? thanks.

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• Can you resize all mac windows at once? (e.g. when docking)

  - by Ian Varley

  I've recently bought a Henge Dock, and like the ability to plug my MacBook in and instantly reconnect to all my peripherals (external monitor, keyboard, mouse, etc.). The only problem is that when I dock or undock, all of my windows are left at the wrong size (either too big or too small) and I have to manually resize them, one by one. Not the end of the world, but ... isn't there an easier way? I've seen Cinch and Sizeup, but they seem to only work on one window (the current app). I looked at the Automator as a possible way to do this, but it didn't seem to have any window operations. I also tried the AppleScript listed here, but it put the windows in wacky places.

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• Improving sound quality with remote ESD server

  - by cuu508

  Hi, I'm investigating low-budget ways to get audio from my PC (Ubuntu) to HiFi without wires. I'm currently testing a setup where Asus WL-500gP wireless router runs ESD daemon and has attached USB soundcard which is then plugged into HiFi. I'm testing playback on PC with mpg123-esd and Spotify under Wine. The sound is there, latency is unexpectedly low, but I also hear occassional clicks and some distortion from time to time. I suppose that's because of the low latency and wireless streaming of uncompressed audio--any packet drops, CPU temporarily being busy etc. will cause clicks in sound output. Is there a way around this problem, increasing latency / buffer size somehow perhaps? Streaming using shoutcast protocol seems to be a way out but I have feeling that would be a complex and brittle setup.

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• Random generation of interesting puzzle levels?

  - by monsterfarm

  I'm making a Sokoban-like game i.e. there's a grid that has some crates on it you can push and you have to get the crates on crosses to win the level (although I'm going to add some extra elements to it). Are there any general algorithms or reading material I can look at for how I could go about generating interesting (as in, not trivial to solve) levels for this style of game? I'm aware that random level generators exist for Sokoban but I'm having trouble finding the algorithm descriptions. I'm interested in making a game where the machine can generate lots of levels for me, sorted by difficulty. I'm even willing to constrain the rules of the game to make the level generation easier (e.g. I'll probably limit the grid size to about 7x7). I suspect there are some general ways to do level generation here as I've seen e.g. Traffic Jam-like games (where you have to move blocks around the free some block) with 1000s of levels where each one has a unique solution. One idea I had was to generate a random map in its final state (i.e. where all crates are on top of their crosses) and then the computer would pull (instead of push) these crates around to create a level. The nice property here is that we know the level is solvable. However, I'd need some heuristics to ensure the level was interesting.

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• Combine two or more tables into a third separate table

  - by Samuel

  Hi community, I have an excel workbook that has three pivot tables in it. What I am wanting to do is create a fourth table that combines the data from all three of the other tables. Essentially I want to concatenate the tables together but still preserve the source tables. Another criteria of what I am wanting to do is if I add a row to any of the source tables it must update the combined table and it must work with x amount of rows where x could be any size. I know I am asking a lot but I would be so grateful if I could get some help working this out. I am comfortable with using either VBA or native excel to solve this. If you guys need examples I will be happy to upload some.

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• Which is the recommended filesystem for VMware Server / ESXi?

  - by elitalon

  We have a couple of servers in office with VMware Server as virtualization solution. We are planning an upgrade of our infrastructure. Some servers will remain with VMware Server, but we want to migrate some others to VMware ESXi. In both cases we are making a fresh install, and I wonder if there any suggestion/guidelines regarding the host filesystem and its partitions. EDIT: We are using local storage instead of SAN/NAS external storage, because we are not sure if it is worth it to use them given our office size/requirements.

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