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• How to speed up rsync/tar of large Maildir

  - by psusi

  I have a very large Maildir I am copying to a new machine ( over 100 BaseT ) with rsync. The progress is slow. VERY SLOW. Like 1 MB/s slow. I think this is because it is a lot of small files that are being read in an order that essentially is random with respect to where the blocks are stored on disk, causing a massive seek storm. I get similar results when trying to tar the directory. Is there a way to get rsync/tar to read in disk block order, or otherwise overcome this problem?

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• Shared Layout, Style, Images and Javascript

  Nowadays it's very common for a medium/large scale company to have many websites. Users should be presented with the same look and feel in all the wesites for better user experiences. This article shows how to define the common layout, images and styles once and how to use them for all web sites using ASP.NET.

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• Shared Layout, Style, Images and Javascript

  Nowadays it's very common for a medium/large scale company to have many websites. Users should be presented with the same look and feel in all the wesites for better user experiences. This article shows how to define the common layout, images and styles once and how to use them for all web sites using ASP.NET.Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• My Hard Disk Drive is not visible until I use it

  - by Matthew

  So, suddenly something went wrong. At the beggining of my Ubuntu usage it was all right, but from about 2-4 weeks I've got this problem: Whenever I try to reach my HDD, i have to open it first by files explorer. Example: I use text editor. Last file fails to load, so I got to open it manually. It's in bookmarked file. I want to reach my bookmark, which is on HDD(partition for both Ubuntu and Windows , NTFS). If i want to reach my bookmark, i have to go there manually(or at least to HDD, then bookmarks pops up). It also doesn't appear at my side bar until i use it. It kinda looks like it wasn't mounted till then, I don't know. It would be nice if I could deal with it, let's say, automatically. Thanks in advance.

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• How to delete old pagefile.sys and hiberfile.sys on secondary disk (old windows install)

  - by Silvermist

  A while ago I swapped my main hard disk for a SSD. Now the old one is used as a secondary hard disk, and my OS is a fresh windows install on the main SSD disk. Nevertheless, there are still huge pagefile.sys and hiberfile.sys on that secondary hard drive. Those are not the ones used by the current windows, as those do exist on C:. I tried to attrib -s -h them, but it refused with "Access denied". Any idea how to delete those old unused system files and reclaim the space?

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• can I display a JPG or PNG to the framebuffer (/dev/fb*)?

  - by ndmweb

  I know I can capture the framebuffer in linux using something like cp /dev/fb0 ~/myimage and re-display that by coping back to the device like so cp ~/myimage /dev/fb0. What format is the framebuffer image data in? and how would I go about displaying a pre-made image (jpg, png) to the framebuffer? Can I convert to this format using imagemagick? p.s. Im using a raspberry pi running raspbian. Update 11-12-2012 I ended up using pygame to display images in my application. Not sure if this uses the frame-buffer to display the images. But it meets my needs quite well.

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• Creating Ubuntu bootable disk on my phone

  - by Aerus

  I want to install Ubuntu 12.04 on my laptop but because I have a complete shortage of writable CDs and DVDs, I wan't to create a bootable USB stick (on Windows). However, the only USB stick I currently have lying around is my HTC phone (HTC Touch HD with 8Gb memory). I was following the Ubuntu guide to create a bootable usb stick with pendrivelinux, however in the last step it shows me that it wants to do more than just copying the .iso file to the USB drive: My question: can I safely proceed without wiping the current OS off my phone (Windows Mobile 6.1) and use it to install Ubuntu?

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• WUBI installation can no longer boot, UUID disk not found

  - by Joel Heenan

  Yesterday my Wubi/Vista installation was working fine. I shut it down at the train station, all good then when I attempted to boot ubuntu at home I got a message saying the UUID for root could not be found. By booting with the Ubuntu live CD I found that the C:\ubuntu\disks folder stat structure was broken, reported as "??? ??? ??" kinda thing. I booted into Windows, scheduled a CHKDSK, ran that on boot which found some errors and rebooted. Still no dice. I am not stressed because it appears my home directory is still there with all my content so I don't mind re-installing the OS (probably will clean it up some). What is the best path from here to repair the WUBI installation? Is there anything else I should do to repair it? I'm looking at whether the drive is dying now to work out why this occured. Possibly I moved the laptop before shutdown had completed.

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• How do I change the canvas size of a PNG with ImageMagick (GraphicsMagick)? (How to pad with transparency?)

  - by Pistos

  Alternatively: How do I take a non-square PNG and "fill out" the "rest" of the image with transparency so that the resulting square image has the original image centered in the square? ULTIMATELY, what I want is to take any image of any GM-supported format of any size, and create a scaled-down PNG (say, 40 pixels maximum for either dimension), with aspect ratio maintained, transparency-padded for non-square original images, AND with an already-prepared 40x40 PNG transparency mask applied. I already know how to scale down and keep aspect ratio; I already have the command for applying my composite. My only missing piece is square-alizing non-square images (padding with transparency). Single command preferred; multi-command chain acceptable. (edit) Extra info: Here's the composite command I'm using: gm composite -compose copyopacity mask.png source-and-target.png source-and-target.png where mask.png has white pixels for what I want to keep of source-and-target.png and transparent pixels for what I want to remove (and become transparent) of source-and-target.png.

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• Is there a limit that a folder can store how many files and folders?

  - by deadman

  I have this folder, called it 'X'. Currently, it has 40k folders and 70k files. I am abit worried, inside are the images. Is there a limit that the folder 'X' can store? That folder is important, it stores my current users images. Please advise? Or should I store in database (BLOB)? I am using mysql. Please advise.

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• Can't install Ubuntu using Wubi on a Windows dynamic disk [closed]

  - by Tharindu

  Possible Duplicate: I can't able to install ubuntu alongside with Win7 ..: When I try to install ubuntu 12.04 - 64 bit alongside win 7 prof. 64 bit it generated the following error. How could I proceed without having this? I - An error occurred: Error executing command command= C:\Windows\sysnative\bcdedt.exe /set {1 bO4672f-5969-11)-a75c-d3d3Od877b8O} device partition= F: retval=1 stderr=An error has occurred setting the element data. The request is not supported. stdout For more information, please see the log file c\users\dell\appdata\local\temp\wubi-12.04

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• .htaccess ReWrite wildcard folder paths from host

  - by JHuangweb

  My desired result is change a file to root / from a N number of paths. For example: www.host.com/a/b/c/e/f/g/images/1.jpg, where A~G is not always given. Result: www.host.com/images/1.jpg This is what I have so far: www.host.com/a/images -- www.host.com/images Using: RewriteRule ^a\/images/$ images/$1 [L] What I need is a wildcard in front of /images/ Like this: RewriteRule ^*/images/$ images/$1 [L] How can I do this correctly in .htaccess?

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• Win Server 2008 R2 SP1 Repair Disk

  - by Horst Walter

  Is there nothing like "creating a repair disk" for Win Server 2008 R2 SP1. Or am I just missing it? Under Win7 I do just enter "Repair" and it finds "create a repair disk". Sorry - but I am not a professional Admin. Just using the server for my development environment. If there is no repair disk, is there something similar or something I should create in case I do have a system failure? Sure, a full backup is done, but anything else?

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• Is it reasonable to make a RAID-1 array with a ram disk and a physical disk to maximize read performance and protect data?

  - by Petr Pudlák

  In one of the answers on SO (I forgot which one) I've seen a suggestion to make a RAID-1 array composed of a RAM disk and a physical partition. By adding the physical partition with --write-mostly and enabling --write-behind the system should read everything instantly from the RAM disk but still save all data to the physical partition so that the data are preserved and the RAID array can be assembled again after reboot. Is such a setup reasonable? Will it perform any better in some scenario than having just the physical partition and perhaps tweaking the kernel to favor disk cache (swappiness and vfs_cache_pressure)?

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• Resize a 2TB partition on a 3TB disk created with fdisk

  - by mR_fr0g

  I recently added a new 3TB hard drive to a headless media server (HP proliant microserver) running Ubuntu server 12.04. I followed this tutorial, which uses fdisk to create a single partition of the maximum size reported by fdisk. I have choosen ext4 format. I then copied across all my media, which took some time. I am guessing that fidisk has a 2TB limit, because du is reporting this as the size. Is there any way to increase the size of the partition to 3TB without having to copy all my media over again?

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• Uploading images to a post like on the stackexchange websites [on hold]

  - by Loko

  Stackexchange uses imgur link to show the image to their website, but how do I do this? I am really curious on what ways I can upload an image to a file and show it immediatly again. Like webshops where you can post your products are also uploading images to show them immediatly. What way are there to do this and what is the best / most secure?(I assume how stackexchange does it), but I also have no idea how to do that.

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• Do you lose everything when you have a hard disk failure in a multi-hard disk LVM that does NOT use RAID?

  - by user72630

  I'm debating about using LVM for a media/file server because I would like to combine multiple physical hard disks into one volume. I do not wish to use any RAID in my LVM so my question is: If one of the multiple hard disks in my volume were to go down would I lose all my data or would I just lose the data that was stored on that individual disk? Also, if I were to just lose the data on the individual disk, would it be as simple as replacing that disk and restoring what was on it from a backup to recover? Thanks everyone.

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• Tools for tracking disk usage

  - by Carey

  I manage a number of linux fileservers. These all run applications written from 0-10 years ago. As sometimes happens, a machine will come close to, or run out of disk space. Reasons include applications not rotating log files, a machine with 500GB of disk producing 150GB of new files every month that were not written to tape, databases gradually increasing in size, people doing silly things...generally a bit of chaos. Anyway, when a machine unexpectedly goes from 50% to 100% full in a couple of hours, I figure out what broke (lots of "du") and delete files or contact someone. I also can look at cacti graphs to figure out what the machine's normal disk usage is (e.g. for /home). Does anyone know of any tools that will give finer grained information on historial usage than a cacti/RRD graph? Like "/home/abc/xyz increased 50GB in the last day".

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• GZipped Images - Is It Worth?

  - by charlie

  Most image formats are already compressed. But in fact, if I take an image and compress it [gzipping it], and then I compare the compressed one to the uncompressed one, there is a difference in size, even though not such a dramatic difference. The question is: is it worth gzipping images? the content size flushed down to the client's browser will be smaller, but there will be some client overhead when de-gzipping it. Please advise.

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• My hard disk does't get recognized

  - by SteveL

  For a few days now I have a problem with my 500GB internal hard disk. I am on Linux Mint 13 but I have the same problem with my Windows installation. When running fdisk -l I can see my hard disk (same on BIOS) but I can't mount it even via the disk utility program. In Windows XP I can see it on the My Computer menu but when I click it, it say's: D:\ is not accessible The file or directory is corrupted and unreadable Is there a way to fix it? Or at least save some of my files and format it? Should I be thinking about the worst-case scenario e.g. my HDD is dead? Edit: The filesystem is NTFS.

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• How to extend a partition in Windows 2000 Server

  - by user999684

  I have a Windows 2000 Server set up with RAID 5. I initially defined 2 136 GB logical disks 0 and 1. I have a small utility partition on disk 0 along with the C drive. I wish to extend the C drive to use disk 1 as well, which is now configured to drive D. I deleted drive D, but it is still in disk 1. I download partdisk.exe from MS, but am not sure how to accomplish what I want to do. I know I need to use extend, but I think I need to remove disk 1 and somehow add the unallocated space to disk zero, but am not at all confident on how to do it.

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• Change filtering method used by Firefox when zooming

  - by peak

  I often zoom in a step or two when reading long texts in Firefox, but when I do so the images become super blurry. It's not really a big deal but when reading text on images (mathematical equations mostly), it's a bit distracting. It seems as if they are scaled using only bilinear interpolation. If I scale an image the same amount in for example Paint.NET or Photoshop the result is much better. Is there any way to change the filtering method used by Firefox to bicubic or another better method? I am Using Firefox 3.5 on Windows BTW.

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• Images on the Fly in ASP.NET

  Learn how to combine text and images on the fly as a single output image. The example scenario is a website that offers printing services with specific fonts and colors.

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• Installed Ubuntu 11.10, getting hard disk health warnings

  - by Brad

  I'm getting hard disk health problem warnings... When I click the "examine" button the disk utility pops up. None of my drives are reporting any major issues, and the very first drive doesn't even have a SMART button. I don't really care if one of the drives is crashing, I've got everything backed up, but I just want to know how to stop these god forsaken message boxes from popping up randomly. I have already gone into the Disk Utility and checked "do not notify me if this drive is failing" on all of them except the one that doesn't have the SMART button. I've googled about as much as I can for one day.

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• Change permission of raw device by UUID

  - by Omid Kosari

  I am using "Apache Traffic Server" which may and it is better to use raw device like /dev/sdb without mounting it as a directory . So i should change the permission of /dev/sdb from root to user "trafficserver" to allow it formatting whole device as it likes . The problem starts after each reboot because /dev/sdb changes randomize so i should use UUID . But i can not change the permission of /dev/disk/by-uuid/48c2fac6-06eb-42c7-8b8a-3b83b781f28c . Is there a way to permanently change permission of disk drive by UUID ?

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