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• Incremental file system backups

  - by brunopereira81

  I use Virtual Box a lot for distro / applications testing purposes. One of the features I simply love about it is virtual machines snapshots, its saves a state of a virtual machine and is able to restore it to its former glory if something you did went wrong without any problems and without consuming your all hard disk space. On my live systems I know how to create a 1:1 image of the file system but all the solutions I'v known will create a new image of the complete file system. Are there any programs / file systems that are capable of taking a snapshot of a current file system, save it on another location but instead of making a complete new image it creates incremental backups? To easy describe what I want, it should be as dd images of a file system, but instead of only a full backup it would also create incremental. I am not looking for clonezilla, etc. It should run within the system itself with no (or almost none) intervention from the user, but contain all the data of the file systems.

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• how can i give other drives and partitions short, meaningful names (in nautilus)?

  - by honestann

  I have 4 disk drives in my 64-bit ubuntu 12.04 LTS computer at the moment, plus one external USB drive. In nautilus and unity the external drive has a nice short descriptive name "mcat", but all partitions on the 4 internal drives are displayed as a size (834GB filesystem) or a huge 32-character string form of a GUID: I'm guessing the external drive is nice, short, sweet and readable because that drive may have no partitions (well, just one I guess) and that name may be the drive label, whereas partitions usually don't have names. That may explain my problem, but doesn't solve it. Is there some way to give reasonable names to these partitions in nautilus and unity?

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• Unable to add host running ubuntu for nagios monitoring?

  - by karthick87

  I am unable to add ubuntu server in nagios monitoring. I am getting "CHECK_NRPE: Socket timeout after 40 seconds." error for few services "CPU Load, Cron File Check, Current Users, Disk Check, NTP Daemon, Time Check, Total Processes, Zombie Processes". Please find the snapshot for the same below, Details: Installed nrpe plugin in ubuntu host. On running the below command from remote host running ubuntu (not nagios server) am getting the following output, root@ubuntu-cacher:~# /usr/local/nagios/libexec/check_nrpe -H localhost NRPE v2.13 But in nagios server i am getting "CHECK_NRPE: Socket timeout after 40 seconds." error. Additional Information: Am running nrpe under xinetd, when i execute the following command i dont get any output, root@ubuntu-cacher:~# netstat -at | grep nrpe But getting the following output when checking, root@ubuntu-cacher:~# netstat -ant|grep 5666 tcp 0 0 0.0.0.0:5666 0.0.0.0:* LISTEN tcp 0 0 172.29.*.*:5666 172.29.*.*:33693 ESTABLISHED tcp 0 0 172.29.*.*:5666 172.29.*.*:33692 ESTABLISHED

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• no such partition, grub rescue

  - by David

  I am currently dual booting Win7 and Ubuntu. I created a new partition, on my c drive, to install windows 8 on (i did not want to do the upgrade). I inserted the windows 8 cd and restarted my computer. no such partition/ grub rescue is all that comes up now. I loaded ubuntu from disk and did boot-repair. It did not solve my problem but I got the following output Please let me know if anyone can fix this. I am lost.

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• Install a Wii Game Loader for Easy Backups and Fast Load Times

  - by Jason Fitzpatrick

  We’ve shown you how to hack your Wii for homebrew software and DVD playback as well as how to safeguard and supercharge your Wii. Now we’re taking a peek at Wii game loaders so you can backup and play your Wii games from an external HDD. Latest Features How-To Geek ETC HTG Projects: How to Create Your Own Custom Papercraft Toy How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk What is Camera Raw, and Why Would a Professional Prefer it to JPG? The How-To Geek Guide to Audio Editing: The Basics How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 Lord of the Rings Movie Parody Double Feature [Video] Turn a Webpage into an Asteroids-Styled Shooting Game in Opera Dolphin Browser Mini Leaves Beta; Sports New GUI, Easy Bookmarking, and More Updated Google Goggles Scans Faster; Solves Sudoku Puzzles Snowy Castle Retreat in the Mountains Wallpaper Fix TV Show Sorting Issues on iOS Devices

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• Make Your Own Paper-Craft Enigma Machine [DIY Project]

  - by Asian Angel

  If you love tinkering around with ciphers and want a fun DIY project for the upcoming weekend, then we have just the thing for you. Using common household items you can construct your own personal Enigma machine that will be completely compatible with all the settings of a real Enigma machine (models I, M1, M2 and M3). Visit the second link below for the step-by-step instructions and enjoy putting together this awesome DIY project! PDF Templates for the Enigma Machine Note: This is a direct link for the PDF file itself and the templates are sized for printing on 2 A4 sheets of paper. Enigma/Paper Enigma Instruction Homepage [via BoingBoing] HTG Explains: What Is RSS and How Can I Benefit From Using It? HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online

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• Wubi 12.04 installation error executing command command

  - by Erik Lau

  I have tried to install wubi but have not had luck because there is an error executing command: command=C:\Users\Me\AppData\Local\Temp\pyl4266.tmp\bin\resize2fs.exe-f C:\ubuntu\disks\root.disk 17744M retval=1 stderr= stdout=resize2fs1.40.6 (09-Feb-2008) Usage: /cygdrive/c/Users/Eriks/AppData/Local/Temp/pyl4266.tmp/bin/resize2fs.exe-f C:/unbuntu/disks.root.disk17744M [-d debug_flags][-f][-F][-p] device[new_size] I do not understand what is the problem. Here is my log file. https://skydrive.live.com/redir?resid=B4F19CA027FFAD89!324 Please let me know what can be done to fix this error.

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• How to encrypt php folder under /var/www?

  - by sirchaos

  I need to encrypt the folder /var/www/test. The folder contains PHP files. The goal it to prevent any user to read the php content AND if the HD is mounted on another computer, the /var/www/test should be encrypted AND if computer booted up without any user logged I would like anyone to be able to access data in /var/www/tests. What is the correct approach for this? I've tried "ecryptfs-setup-private" as advised in How to encrypt /var/www? yet it didn't work for me. I've might missed something - I've tested the folders while booting with ubuntu 12.04 installation disk and mounted the drive, than I was able to access /var/www/test content.. yet this is what I want to prevent. The gnome-encfs isn't the way to go since its decryption happens when users logs on to the system & I would like the system to be working after power failure etc' without any one logged in. Please advice.

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• HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows?

  - by Chris Hoffman

  If you’ve ever purchased a computer with a hard disk capacity of 500 GB and opened Windows Explorer only to find that its capacity looked more like 440 GB, you may be wondering where all those gigabytes went. There are several reasons Windows could display the wrong amount of available space, from invisible shadow files, formatting overhead, and hidden recovery partitions to misleading (though technically accurate) storage capacities advertised by hard drive manufacturers. Image Credit: Norlando Pobre HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How What Are the Windows A: and B: Drives Used For?

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• Kindle Paperwhite Jailbroken; Ready for Custom Screensavers

  - by Jason Fitzpatrick

  If you’re already longing for some custom screensavers on your new Kindle Paperwhite, you’re in luck. The new Kindle has been jailbroken, opening it up to all sorts of custom hacks and modifications. For extra guidance on what to do once you’ve jailbroken, check out our guide to adding the screensaver hack and creating/adding screensaver images–make sure to grab the updated screensaver hack while you’re at it. Kindle 5.1.x Jailbreak [via Hack A Day] 7 Ways To Free Up Hard Disk Space On Windows HTG Explains: How System Restore Works in Windows HTG Explains: How Antivirus Software Works

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• I can't figure out how to run ubuntu .iso from thumbdrive?

  - by Judge Cole Stanley

  I downloaded Ubuntu 12.04.1 and I can't find a solid way to run it from the disk version of Ubuntu 11.04 for a clean install. I think the hard drive is messed up, or else I would install 11.04, but it won't work. So I wanna install 12.04.1 from a thumbdrive, so I can actually use this computer without using the demo and installing everything when it dies, or shuts off... Please help? I want to make it at least bootable from a thumbdrive, just so I can lightly browse the internet and what not... it doesn't have to be a hard install.

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• Checking who is connected to your server, with PowerShell.

  - by Fatherjack

  There are many occasions when, as a DBA, you want to see who is connected to your SQL Server, along with how they are connecting and what sort of activities they are carrying out. I’m going to look at a couple of ways of getting this information and compare the effort required and the results achieved of each. SQL Server comes with a couple of stored procedures to help with this sort of task – sp_who and its undocumented counterpart sp_who2. There is also the pumped up version of these called sp_whoisactive, written by Adam Machanic which does way more than these procedures. I wholly recommend you try it out if you don’t already know how it works. When it comes to serious interrogation of your SQL Server activity then it is absolutely indispensable. Anyway, back to the point of this blog, we are going to look at getting the information from sp_who2 for a remote server. I wrote this Powershell script a week or so ago and was quietly happy with it for a while. I’m relatively new to Powershell so forgive both my rather low threshold for entertainment and the fact that something so simple is a moderate achievement for me. $Server = 'SERVERNAME' $SMOServer = New-Object Microsoft.SQLServer.Management.SMO.Server $Server # connection and query stuff         $ConnectionStr = "Server=$Server;Database=Master;Integrated Security=True" $Query = "EXEC sp_who2" $Connection = new-object system.Data.SQLClient.SQLConnection $Table = new-object "System.Data.DataTable" $Connection.connectionstring = $ConnectionStr try{ $Connection.open() $Command = $Connection.CreateCommand() $Command.commandtext = $Query $result = $Command.ExecuteReader() $Table.Load($result) } catch{ # Show error $error[0] | format-list -Force } $Title = "Data access processes (" + $Table.Rows.Count + ")" $Table | Out-GridView -Title $Title $Connection.close() So this is pretty straightforward, create an SMO object that represents our chosen server, define a connection to the database and a table object for the results when we get them, execute our query over the connection, load the results into our table object and then, if everything is error free display these results to the PowerShell grid viewer. The query simply gets the results of ‘EXEC sp_who2′ for us. Depending on how many connections there are will influence how long the query runs. The grid viewer lets me sort and search the results so it can be a pretty handy way to locate troublesome connections. Like I say, I was quite pleased with this, it seems a pretty simple script and was working well for me, I have added a few parameters to control the output and give me more specific details but then I see a script that uses the $SMOServer object itself to provide the process information and saves having to define the connection object and query specifications. $Server = 'SERVERNAME' $SMOServer = New-Object Microsoft.SQLServer.Management.SMO.Server $Server $Processes = $SMOServer.EnumProcesses() $Title = "SMO processes (" + $Processes.Rows.Count + ")" $Processes | Out-GridView -Title $Title Create the SMO object of our server and then call the EnumProcesses method to get all the process information from the server. Staggeringly simple! The results are a little different though. Some columns are the same and we can see the same basic information so my first thought was to which runs faster – so that I can get my results more quickly and also so that I place less stress on my server(s). PowerShell comes with a great way of testing this – the Measure-Command function. All you have to do is wrap your piece of code in Measure-Command {[your code here]} and it will spit out the time taken to execute the code. So, I placed both of the above methods of getting SQL Server process connections in two Measure-Command wrappers and pressed F5! The Powershell console goes blank for a while as the code is executed internally when Measure-Command is used but the grid viewer windows appear and the console shows this. You can take the output from Measure-Command and format it for easier reading but in a simple comparison like this we can simply cross refer the TotalMilliseconds values from the two result sets to see how the two methods performed. The query execution method (running EXEC sp_who2 ) is the first set of timings and the SMO EnumProcesses is the second. I have run these on a variety of servers and while the results vary from execution to execution I have never seen the SMO version slower than the other. The difference has varied and the time for both has ranged from sub-second as we see above to almost 5 seconds on other systems. This difference, I would suggest is partly due to the cost overhead of having to construct the data connection and so on where as the SMO EnumProcesses method has the connection to the server already in place and just needs to call back the process information. There is also the difference in the data sets to consider. Let’s take a look at what we get and where the two methods differ Query execution method (sp_who2) SMO EnumProcesses Description - Urn What looks like an XML or JSON representation of the server name and the process ID SPID Spid The process ID Status Status The status of the process Login Login The login name of the user executing the command HostName Host The name of the computer where the  process originated BlkBy BlockingSpid The SPID of a process that is blocking this one DBName Database The database that this process is connected to Command Command The type of command that is executing CPUTime Cpu The CPU activity related to this process DiskIO - The Disk IO activity related to this process LastBatch - The time the last batch was executed from this process. ProgramName Program The application that is facilitating the process connection to the SQL Server. SPID1 - In my experience this is always the same value as SPID. REQUESTID - In my experience this is always 0 - Name In my experience this is always the same value as SPID and so could be seen as analogous to SPID1 from sp_who2 - MemUsage An indication of the memory used by this process but I don’t know what it is measured in (bytes, Kb, Mb…) - IsSystem True or False depending on whether the process is internal to the SQL Server instance or has been created by an external connection requesting data. - ExecutionContextID In my experience this is always 0 so could be analogous to REQUESTID from sp_who2. Please note, these are my own very brief descriptions of these columns, detail can be found from MSDN for columns in the sp_who results here http://msdn.microsoft.com/en-GB/library/ms174313.aspx. Where the columns are common then I would use that description, in other cases then the information returned is purely for interpretation by the reader. Rather annoyingly both result sets have useful information that the other doesn’t. sp_who2 returns Disk IO and LastBatch information which is really useful but the SMO processes method give you IsSystem and MemUsage which have their place in fault diagnosis methods too. So which is better? On reflection I think I prefer to use the sp_who2 method primarily but knowing that the SMO Enumprocesses method is there when I need it is really useful and I’m sure I’ll use it regularly. I’m OK with the fact that it is the slower method because Measure-Command has shown me how close it is to the other option and that it really isn’t a large enough margin to matter.

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• Unable to Install GRUB in /dev/sda on raid drives

  - by Henry

  I'm trying to install 12.04LTS on a server but keep running into the unable to install grub error like so "Unable to Install GRUB in /dev/sda". The drives are in raid1 and I'm using fakeraid on a supermicro motherboard, which according to the manual is fully supported. I've tried installing both from USB and CD-R but still no luck. I'm not dual booting with any other OS, just using 2x320gb drives and have been choosing to install using the entire disk. Any ideas what I'm doing wrong or can do to fix this? Thanks

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• CD/DVD drive not mounted when inserted with Disc of any kind

  - by Cisco Sán

  I just noticed that if a insert a CD or a DVD of any kind, the Drive will start spinning but it will not show the mounted disc. Before it used to ask me what to do with the media inserted. Now it doesn't even do that. I ran in the terminal this code: eject -n and it displays this: " eject: device is `/dev/sr0'" what can I do to get the functionality back on my drive. also ran this command: sudo mount -o ro,unhide,uid=1000 /dev/cdrom /mnt/cdrom but in return i get this: " mount: mount point /mnt/cdrom does not exist" Running Ubuntu 11.10 HERE IS THE HISTORY UNTIL NOW thanks Waltinator: I ran the 'dmesg' but don't know what I'm looking for. Im a newbie on this. The same thing with the 'ls -rlt /var/log' command. Should I create the directory for the mount? at this point really don't know what to do. – Cisco Sán 7 hours ago Here are 3 lines from my dmesg after I successfully inserted a CD: [ 4804.416018] wlan0: no IPv6 routers present [ 8214.125450] ISdit ISO 9660 Extensions: Microsoft Joliet Level 3 [ 8214.136556] ISO 9660 Extensions: RRIP_1991A The first line is a previous event, my wireless going online. The next 2 lines are a good result. The number in square brackets is "seconds since boot", the rest of the line is usually helpful. And no, you should NOT create the mount point. Let's try to get the automatic mounting to work. – waltinator 7 hours ago ok this are my last 3 lines on the 'dmesg' [ 18.130819] init: plymouth-stop pre-start process (1396) terminated with status 1 [ 28.780011] wlan0: no IPv6 routers present [ 505.632119] CE: hpet increased min_delta_ns to 20113 nsec – Cisco Sán 6 hours ago It looks like your CD/DVD drive is not connected to the data bus, and not causing an interrupt when you insert a platter. – waltinator 6 hours ago Try dmesg | grep -A8 CD-ROM which should show you what the system thought was available when it came up. – waltinator 6 hours ago here is my printout [0.774351] scsi 0:0:0:0: CD-ROM HL-DT-ST DVD+-RW GSA-T40N A100 PQ: 0 ANSI: 5 [0.778117] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray [0.778122] cdrom: Uniform CD-ROM driver Revision: 3.20 [0.778282] sr 0:0:0:0: Attached scsi CD-ROM sr0 [0.778340] sr 0:0:0:0: Attached scsi generic sg0 type 5 [0.780416] Freeing unused kernel memory: 984k freed [0.780732] Write protecting the kernel read-only data: 10240k [0.780986] Freeing unused kernel memory: 20k freed [0.786331] Freeing unused kernel memory: 1400k freed [0.804912] udevd[90]: starting version 173 [0.874178] r8169 Gigabit Ethernet driver 2.3LK-NAPI loaded [0.874208] r8169 0000:02:00.0: PCI INT A - GSI 16 (level, low) - IRQ 16 OK, your system sees the drive. Can you open and close the tray with eject and eject -t? Run udevadm monitor while you insert a CD (type ^C when done) and see if you get "change" and "add" messages. – waltinator 6 hours ago ok, "eject" works perfectly "eject -t" does nothing. this is the message for "udevadm monitor": KERNEL[13771.009267] change /devices/pci0000:00/0000:00:1f.1/host0/target0:0:0/0:0:0:0/block/sr0 (block) UDEV [13773.878887] change /devices/pci0000:00/0000:00:1f.1/host0/target0:0:0/0:0:0 /block/sr0 (block) – Cisco Sán 6 hours ago sudo hwinfo --cdrom (the hwinfo package is installable through Software Center) describes my CD-ROM, try it. – waltinator 4 hours ago My read out from the "sudo hwinfo --cdrom" are the following: hal.1: read hal dataprocess 2753: arguments to dbus_move_error() were incorrect, assertion "(dest) == NULL || !dbus_error_is_set ((dest))" failed in file ../../dbus/dbus-errors.c line 280. This is normally a bug in some application using the D-Bus library. libhal.c 3483 : Error unsubscribing to signals, error=The name org.freedesktop.Hal was not provided by any .service files 22: SCSI 00.0: 10602 CD-ROM (DVD) [Created at block.247] Unique ID: KD9E.JgkxTS4hgl2 Parent ID: 3p2J.gdUMCD83e+E SysFS ID: /class/block/sr0 SysFS BusID: 0:0:0:0 SysFS Device Link: /devices/pci0000:00/0000:00:1f.1/host0/target0:0:0/0:0:0:0 Hardware Class: cdrom Model: "HL-DT-ST DVD+-RW GSA-T40N" Vendor: "HL-DT-ST" Device: "DVD+-RW GSA-T40N" Revision: "A100" Driver: "ata_piix", "sr" Driver Modules: "ata_piix" Device File: /dev/sr0 (/dev/sg0) Device Files: /dev/sr0, /dev/scd0, /dev/disk/by-id/ata-HL-DT-ST_DVD+_-RW_GSA-T40N_K048BJ74257, /dev/disk/by-path/pci-0000:00:1f.1-scsi-0:0:0:0, /dev/cdrom, /dev/cdrw, /dev/dvd, /dev/dvdrw Device Number: block 11:0 (char 21:0) Features: DVD Config Status: cfg=new, avail=yes, need=no, active=unknown Attached to: #17 (IDE interface) Drive Speed: 31 Volume ID: "Movie" Publisher: "INTERVIDEO" Creation date: "20050424162207000" Thanks for the help. To Castro, hope this is what you meant and sorry for the comments..

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• How to create a bootable Clonezilla usb with Tuxboot that work?

  - by Feanor

  I'm trying to create a bootable clonezilla usb with tuxboot, the application that is recommended by clonezilla site. I installed it via Ubuntu PPA and follow the instructions on the site to put files on usb. Everything went well and then I restarted the system. Now when I'm trying to boot from usb it says: "This is not a bootable disk. Please insert a bootable floppy and press any key to try again ..." What is causing this problem? I really appreciate any help you can provide. My laptop model is Dell studio-1558 and I'm running Ubuntu 14.04

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• How can I copy/paste files via RDP in Kubuntu?

  - by Dai

  I recently installed the latest Kubuntu (x64) on my work machine as I am trying to migrate away from Windows. Unfortunately I use RDP very frequently to connect to customer's servers and need to be able to copy files across. I have tried the following packages with no luck: remmina rdesktop xfreerdp My latest attempt to solve this involved connecting one of my folders to the remote server, here is the command I used to launch rdesktop: rdesktop -5 -K -r disk:home=/home/dai -r clipboard:CLIPBOARD -r sound:off -x l -P 192.168.0.2 -u "administrator" -p pass The servers are not all running the same version of Windows, the one I've been trying so far is running Server 2003 R2. Customer servers range from Server 2000 to Server 2008. I've been Googling this like mad but all the solutions I find seem to fail, maybe because almost all the help out there assumes that I'm running Gnome. Sorry if this is a stupid question. Thanks in advance for your help. Edit: Copying and pasting text seems to work just fine, but that's not what I need.

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• Unable to boot either Ubuntu or Windows after kernel panic

  - by Josh Taylor

  Hi, Today I have been unable to boot into my Ubuntu (10.10) or Windows (7) partition. Ubuntu kernel panics on boot with the error: init: hash.c:296: Assertion failed in nih_hash_search: hash != NULL I can boot into a LiveUSB environment, and from there can access all my files on my 3 partitions (1 ext4, 2 NTFS). I have also ran fsck on the ext4 partition and ntfsfix on the 2 NTFS partitions, both not finding any errors at all. And Grub is intact and have also tried a reinstall of it. So at the moment I'm currently stuck using a LiveUSB, and would like to see if there are any other options other than reinstalling. Thanks. Update I've now ran chkdsk using my Windows recovery disk, and it found errors and fixed them, but I am still unable to boot into either Windows or Ubuntu Update #2 I've decided to just re-install Ubuntu and start again as I didn't really want to spend any more time looking around whilst I need this computer for work. Thanks for all your help though.

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• Cannot mount one usb disc, although other mounts automatically after 12.10 upgrade

  - by Allen Williams

  Since upgrading to 12.10, switching on or attempting to mount one of my usb hard drives gives this error message: Error mounting system-managed device /dev/sdg1: Command-line `mount "/mnt/usb-ST350041_8AS_60CAFFFFFFFF-0:0-part1"' exited with non-zero exit status 32: mount: wrong fs type, bad option, bad superblock on /dev/sdg1, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so dmesg | tail gives (inter alia): [ 1080.727830] sdg: sdg1 [ 1080.732003] sd 8:0:0:0: [sdg] Attached SCSI disk [ 1081.383633] FAT-fs (sdg1): Unrecognized mount option "x-gvfs-show" or missing value [ 1871.160973] sdg: sdg1 The drive cannot be mounted, but is recognized by the system as a "place". I am not a technical bod; I cannot take this further myself and any help would be much appreciated.

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• How to use Btrfs with compression on external USB hard drive?

  - by Andre

  I would like to make use of Btrfs' transparent compression on an external drive. Which tool is best for formatting the drive? Disk Utility or GParted? How do I activate the compression? During formatting or when I mount the drive? I guess at mount time. I'm using usbmount to automatically mount newly attached devices, because nobody is logged in on the desktop. Would I have to set general default options somewhere in a system configuration file to get Btrfs mounted with compression, or would I specify this via FS_MOUNTOPTIONS in /etc/usbmount/usbmount.conf and how? Thanks!

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• Install unetbootin on Ubuntu 12.04

  - by Matteo

  I'm trying to install UNetbootin on Ubuntu 12.04 LTS. I downloaded the executable file from this link and followed the instructions below: If using Linux, make the file executable (using either the command chmod +x ./unetbootin-linux, or going to Properties-Permissions and checking "Execute"), then start the application, you will be prompted for your password to grant the application administrative rights, then the main dialog will appear, where you select a distribution and install target (USB Drive or Hard Disk), then reboot when prompted.\ So I typed on my terminal sudo chmod +x unetbootin-linux-584 and tried to execute the binary file with ./unetbootin-linux-584 but got this output: ./unetbootin-linux-584: error while loading shared libraries: libXrandr.so.2: cannot open shared object file: No such file or directory However when I checked for libraries libXrandr on my system I actually found them $> locate libXrandr /usr/lib/x86_64-linux-gnu/libXrandr.so.2 /usr/lib/x86_64-linux-gnu/libXrandr.so.2.2.0 /usr/lib/x86_64-linux-gnu/libXrandr_ltsq.so.2 /usr/lib/x86_64-linux-gnu/libXrandr_ltsq.so.2.2.0 so I really don't have a clue of what's the problem and how can I fix it, any ideas?

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• Migrating from GlassFish 2.x to 3.1.x

  - by alexismp

  With clustering now available in GlassFish since version 3.1 (our Spring 2011 release), a good number of folks have been looking at migrating their existing GlassFish 2.x-based clustered environments to a more recent version to take advantage of Java EE 6, our modular design, improved SSH-based provisioning and enhanced HA performance. The GlassFish documentation set is quite extensive and has a dedicated Upgrade Guide. It obviously lists a number of small changes such as file layout on disk (mostly due to modularity), some option changes (grizzly, shoal), the removal of node agents (using SSH instead), new JPA default provider name, etc... There is even a migration tool (glassfish/bin/asupgrade) to upgrade existing domains. But really the only thing you need to know is that each module in GlassFish 3 and beyond is responsible for doing its part of the upgrade job which means that the migration is as simple as copying a 2.x domain directory to the domains/ directory and starting the server with asadmin start-domain --upgrade. Binary-compatible products eligible for such upgrades include Sun Java System Application Server 9.1 Update 2 as well as version 2.1 and 2.1.1 of Sun GlassFish Enterprise Server.

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• Save BIG on Storage &mdash; with Oracle Advanced Compression

  - by [email protected]

  Recently, we published a podcast revealing just how much Oracle benefits from its internal use of Oracle Database 11g and Advanced Compression. With hundreds of TB and millions of dollars saved, Oracle Advanced Compression is dramatically reducing storage costs and substantially improving efficiency across the company. Now, here's your chance: Meet the experts, have your questions answered by them and immediately start using your storage more efficiently: On April 14th, join me for a live Webcast with Oracle's Tim Shetler, Vice President of Product Management and Bill Hodak, Principal Product Manager, to learn just how Oracle Advanced Compression can Reduce disk space requirements for all types of data Improve query and storage performance Lower storage costs throughout the datacenter Register here! var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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• Ubuntu - Black Screen After Suspend

  - by EssAm

  I used Ubuntu with no problems and I upgraded to 11.10 and everything was fine. But when I did my first suspend I was not able to boot again, all I got was a black screen no bios screen, nothing just blank, I tried doing hard reset but when I power on again same happens. I tried ctrl+alt+delete F1-F12 but i think the keyboard is not working, also tried booting from CD but all I got was blank screen, the hard disk light is not blinking at all so i'm assuming it's not trying to boot. My laptop is Toshiba satellite with ATI Radeon graphics. Hibernate was working fine though. I searched the net for solutions but with no luck. Any ideas?

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• Changing file permissions on USB external hard drive

  - by pacomet

  I am using an external USB hard drive for a long time in Ubuntu 10.04, both at work and at home. Now I've installed 12.04 at home. Today I used the USB drive for the first time. I can read the disk but can't change the permissions of a file I wanted. Output of "mount" /dev/sdb1 on /media/FREECOM HDD type vfat (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077, utf8=1,showexec,flush,uhelper=udisks) What I try sudo chmod u+w bsst-hdf_to_bsst-h5 and what I get -rw-r--r-- 1 paco paco 2956 dic 19 10:27 bsst-hdf_to_bsst-h5 Any idea would be appreciated. Thanks in advance

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• Limited resource practice problems?

  - by Mark

  I'm applying for some big companies and the areas I seem to be getting burned on is problems involving limited memory, disk-space or throughput. These large companies process GBs of data every second (or more), and they need efficient ways of managing all that data. I have no experience with this as none of the projects I have worked on have grown that large. Is there a good place to learn about or practice these sorts of problems? Most of the practice-problem sites I've encountered only have problems where you have to solve something efficiently (usually involving prime numbers) but none of them limit your resources.

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