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• OSX chown problems after creating users with dscl

  - by RandomInsano

  Alright, so I've made a user and a group using dscl as follows: dscl . -create /Users/deadline dscl . -create /Groups/deadline dscl . -append /Groups/deadline GroupMembership deadline Now I'm trying to chown things like so: mkdir /tmp/stuff chown deadline:deadline /tmp/stuff But the problem is that it sets the user and group to nobody instead of this user 'deadline'. What magic voodoo property do I need to add to the user and group to have it set the unix permissions properly? Also, why must Apple hate me and my Unix background :(

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• Bootable and remote controllable imaging software?

  - by stefan.at.wpf

  I am looking for an imaging software, that one can boot from CD or usb stick (therefore without installing anything on the system!) and then control by some kind of remote desktop. So something like a combination of Acronis TrueImage's Bootable Media and Windows Remote Desktop. I don't even need to be able to store the backup on a network drive, as an external usb hdd is attached for these purposes. Background: A system that is normally controlled by SSH / command line and therefore has no keyboard/mouse connected that I could use to control Acronis TrueImage.

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• A website hosted on the 1.0.0.0/8 subnet, somewhere on the Internet?

  - by Dave Markle

  Background I'm attempting to demonstrate, using a real-world example, of why someone would not want to configure their internal network on the 1.0.0.0/8 subnet. Obviously it's because this is not designated as private address space. As of 2010, ARIN has apparently allocated 1.0.0.0/8 to APNIC (the Asia-Pacific NIC), who seems to have begun assigning addresses in that subnet, though not in 1.1.0.0/16, 1.0.0.0/16, and others (because these addresses are so polluted by bad network configurations all around the Internet). My Question My question is this: I'd like to find a website that responds on this subnet somewhere and use it as a counter-example, demonstrating to a non-technical user its inaccessibility from an internal network configured on 1.0.0.0/8. Other than writing a program to sniff all ~16 million hosts, looking for a response on port 80, does anyone know of a directory I can use, or even better yet, does anyone know of a site that's configured on this subnet? WHOIS seems to be too general of a search for me at this point...

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• PDF Encrypted, Hidden Watermark

  - by Dave Jarvis

  Background Using LaTeX to write a book. When a user purchases the book, the PDF will be generated automatically. Problem The PDF should have a watermark that includes the person's name and contact information. Question What software meets the following criteria: Applies encrypted, undetectable watermarks to a PDF Open Source Platform independent (Linux, Windows) Fast (marks a 200 page PDF in under 1 second) Batch processing (exclusively command-line driven) Collusion-attack resistant Non-fragile (e.g., PDF - EPS - PDF still contains the watermark) Well documented (shows example usages) Ideas & Resources Some thoughts and findings: Natural language processing (NLP) watermarks. Apply steganography on a randomly selected image. http://openstego.sourceforge.net/cmdline.html The problem with NLP is that grammatical errors can be introduced. The problem with steganography is that the images are sourced from an image cache, and so recreating that cache with watermarked images will impart a delay when generating the PDF (I could just delete one image from the cache, but that's not an elegant solution). Thank you!

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• What tools can be used to download all images in a webpage?

  - by bobo

  I would like to download all images in a web page. The tool should be smart enough to examine the css and javascript files in the page source to look for the images. Ideally, it should also replicate the folder hierarchy, saving the images in the correct folder. For example, the web page may have some images for menu items stored in images/menu/ and for background images it may be stored in images/bg/. Is there such a tool that you know of? (preferably in Windows but Linux is still ok) Many thanks to you all.

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• Why are unicode characters not rendering correctly

  - by sw1nn

  Background: I have some unicode characters in my prompt (git status markers essentially) I'm running urxvt under xfce on arch linux. I'm using DejaVu Sans Mono for Powerline font, specified via .Xresources line: URxvt*font: xft:DejaVu Sans Mono for Powerline:pixelsize=14 When I start urxvt the unicode characters do not render correctly. For example ? renders as â However, if I then start a new urxvt from inside the first terminal everything renders correctly. There doesn't appear to be any difference in the environment between the two terminals. What could be the difference between the first invocation and the nested invocation? I suspect the font is not correct in the 'outer' instance, but I'm unsure how to check the font of a running X window screenshot demonstrates the problem: Note: I moved this question from serverfault.com - i hope this site is more appropriate

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• Unexpected network traffic?

  - by robwalker

  My internet connection is via a fixed wireless connection using a 900MHz Motorola Canopy module. The router reports a fairly consistent 32-64Kbps of incoming traffic on the WAN port. When I attached a PC directly to the port and run Wireshark, I get a dump showing a lot of chatter from other machines that I presume are connected to the same tower. This didn't include end-to-end traffic, but was there were a lot of ARP requests, SSDP traffic, ICMP and other network discovery type stuff. Is this 'normal' or does it suggest a misconfiguration somewhere? As far as I can tell there is no need for my modem to be receiving any of this traffic (other than wanting to know what the names of my neighbours machines and printers are!) Since the internet connection is slow at the best of time, having this amount of background noise seems very wasteful.

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• Massive amount of subfolders and long subfolders. ¿How can I delete all of them?

  - by Carlos

  Good day. We have a little problem here. We have a share with the backup of all the server's offices, Its a really big share with more than 8.000.000 files. Our users usually give long names to the folders they create, and then make subfolders (long too) and more subfolders... and more suboflders.... We have a new share with more capacity, and with a simpe robocopy bat we copied all the files and folders (some give problems, but we manually copied them) But the problem is deleting them. del command didnt work well when so long paths, neirder rmdir... I'm tried some commanders, but no luck. Can u recommend me any tool that can delete recursively or able to delete 255+ paths? Edited: The SO on background of the share it's NetApp OS. But I can access it from Windows Servers. 2000 and 2003 Thanks.

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• Windows 7 Taskbar disappears overnight

  - by eidylon

  Hello all, I've got this problem that started happening recently. Overnight, something is happening that makes my taskbar disappear on my laptop. The Start orb is still there, and if I click it, it pops up the start menu, but the whole rest of the taskbar, including the background behind the start orb, is just completely vanished: tray icons, running programs, clock, everything. I tried killing explorer.exe and restarting it, but it doesn't restart. And after killing it, Task Manager won't let me start ANY programs. It gives no errors, just ... doesn't run them. Anyone else see this or know what it might be? I'm running Windows 7 RC on an IBM ThinkPad R51 with 2GB ram.

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• Can a 32-bit RHEL4 userland work with a 64-bit kernel?

  - by James

  Is there a way to change an i386 RHEL4 machine to run an amd64 kernel, but ensure that it still builds software into same i386 binaries? On Debian this seems quite straightforward: just install an amd64 kernel (worst case, build one like this guy: http://www.debian-administration.org/users/jonesy/weblog/1) and prefix everything with "linux32". Then everything that considers uname -m will be unchanged, I just need to handle the few cases that consider uname -r. What is the Red Hat equivalent? Is the only way a full 64-bit installation on another disk and then chrooting back to the 32-bit system before anyone builds anything? (Even the best examples of that seem to be Debian-based.) Background: We make a large system that runs on (a variant of) i386 RHEL4. However, some of the larger RHEL build machines now have enough RAM that they might benefit from going 64-bit (for the kernel and maybe some of the bigger build steps). Our build system doesn't support cross-compilation.

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• BITS http download job fails to connect for owner Local SYSTEM account

  - by MikeT

  A service I have written that uses BITS (Background Intelligent Transfer Service) to auto update itself is having a problem on some machines (Windows 7 so far). I have been investigating and have discovered that some of the jobs that my service adds to the bits queue are failing immediately with the error code 0x80072efd (a connection with this server could not be established). The is not problem with connecting to the server for the download as it works fine on the same machine using IE (or any other web browser) and other clients can connect and update from the same server. I tried using the BITSADMIN.exe tool to add the jobs manually and they worked ok. I then changed the account my service was running under to the network service account so the bits jobs would be created with a different owner and the jobs completed successfully. My question is I don't want to run my service as this account as it wont have the required local permissions, so how to I change the permissions of the local system user to allow it to download from the HTTP source, I'm not aware of any way of this being restricted for this account but it obviously is.

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• Grant permission for specific other AD users to unlock/log out user from PC

  - by Simon Needham

  What I'm looking to do is permission a Windows PC (ideally XP but if a later OS version is required so be it) so that a select group of users can unlock the machine, logging the current user out. This something that a Local Admin for the machine would be able to do from a locked screen, however, I'd like to avoid granting Local Admin rights to this group of users if I can. The background here is that this machine is 80% used by one person but is treated as a 'shared machine' on days that the primary user is not around. It's usefull that everybody using the machine can carry on using their own accounts with all the personalisations they are used to. I'd also like to void logging the primary user out every night. No one else in the firm has to put up with that and she does use the machine herself most of the time.

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• Strange Unclearable Cache Issue with Gmail and Google Apps

  - by Brian

  I am having a strange issue with Gmail and Google Apps... have a look at this screenshot: http://cld.ly/f51ume notice the missing images for the rounded corners? Well this is not such a problem but something similar to a cache issue is causing this as well as no background image, but MOST IMPORTANTLY chat and other "clickable" features aren't working. I've already cleared my cache multiple times and quit and re-started Firefox with no change. Everything is OK in other browsers. Any other debug suggestions?

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• How do I perform an action if the upstart respawn limit is hit?

  - by Daniel Huckstep

  I have an upstart job: description "foreman" start on runlevel [2345] stop on runlevel [06] respawn respawn limit 3 60 chdir /home/deploy/app/current env RAILS_ENV=production exec sudo -u deploy bundle exec foreman start We ran into a case where a rogue character in an app file caused one of the background workers to fail but the app ran normally (weird). The app worked fine, but the workers were never working. I'd like upstart to do something (send an email) if it can't start this job, since it's not entirely obvious if everything went alright. Is there something built into upstart to handle this, or do I have to get creative?

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• Unlock file on Windows Server 2003 by remote desktop without rebooting

  - by BalusC

  We've several Windows Server 2003 machines running, each with its own purposes. There are scheduled jobs which synchronizes some files over SFTP using WinSCP. Very sometimes a newly copied file is left locked in the "inbox" folder without any reason. The machine's own background task (programmed in Java) can't move it to the "processed" folder anymore after processing it. Manually moving it only yields the well known error message Cannot move [filename]: it is being used by another person or program. The only resort is to reboot the machine, but we would of course like to avoid that. Any suggestions? I tried Unlocker which works fine locally at WinXP, but doesn't work at those Win2K3 machines by remote desktop (unlock option doesn't show up in rightclick context menu). I tried Process Explorer as well as described in this blog article, but it caused the server to crash (not sure if that's because it's executed through remote desktop).

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• TeamViewer: How to disable color dithering for low-bit-depth screen settings

  - by gogowitsch

  I am using Terminal Services and TeamViewer a lot to access other computers, partly over slow networks. The problem described below is not affected by which of the two remote access services I am using. When accessing Windows 7 Professional machines, a great deal of text is hard to read as the background is dithered. Even for exactly the same colors, Windows 2003 does not seem to dither at all, but to choose the closest available color. I strongly prefer the latter, as I don't care for the exact colors, I just want to be able to read easily. I am not sure whether this is operating system-related. The programs on the remote systems do not allow me to change the color choices for the various backgrounds to anything sane. Is there a way to disable this color dithering using some target operating system setting that will do the trick for both Terminal Services and TeamViewer?

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• Copy/move EBS volume from one Region to another

  - by Gnanam

  Background of our setup: We've hosted our web-based application in Amazon EC2 US East (Virginia) Region. Our instance is based on Linux distribution (CentOS) and AMI is S3-backed. 1 EBS volume (400 GB size) is attached to this instance. Question: We've planned to migrate our deployment to US West (N. California) Region. From AWS doc, I understood that for moving AMI, there is a command-line tool available - ec2-migrate-bundle. But for moving EBS volume across Region, currently there is no tool available. I'm looking for easiest and/or fastest way of copying/moving EBS volume from one Region to another. Also, are there any hidden risks involved during and/or after the migration? Experts ideas/suggestions/recommendations on this are highly appreciated.

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• What Commands Does Windows Startup Repair Run?

  - by user138284

  Background: I created a wim image that we are planning to deploy to some of our computers, but when I image a computer with it from a flash drive it continually reports that the BOOTMGR is missing (and no, it's not booting off the flash drive). I am able to resolve this by running Windows Startup Repair, but I would rather just add whatever command is resolving the issue to a script that runs after the image. I have already tried running fixmbr, fixboot, rebuildbcd, and nt60, but none of those resolve the issue. Basically, I would like to know what exactly is being done when I run Windows Startup Repair.

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• Invoking an MMC Snap-in function from Windows command shell: is it possible?

  - by robob

  Sorry for the cross post on Superuser, but I cannot see any answer to my question, so I try to ask the same question here. I need to execute a MMC Snap-in function from the Command Shell of a Windows computer. I need it to schedule this command in the same Windows PC and executes in background. Probably this questions could seem a little bit strange but I have a program that creates a debug log only through its MMC Snap-in console. And I need to automatise this task to programatically read this log! Dows anyone know how to do this? thanks

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• Is Dell's server software bundle necessary? (Poweredge 2950 in my case)

  - by bwerks

  Hi all, Dell includes a fair amount of software with its servers, but I'm having a hard time determining from the documentation what each of them does, and whether or not I should install it. Dell's support site (unless I'm doing it wrong) seems fairly opaque to me and its offerings fairly unstandardized in terms of their usage, so if possible I'd like to stray away from them. Specifically, I'm curious if any of the features offered are duplicated in something like Microsoft System Center. For additional background information, I'm working with a Poweredge 2950 that was just rebuilt with an expanded raid-6, but initially I just installed Server 2008 R2 directly instead of using the Build and Update utility. There's nothing of use on it at the moment so I'm totally open to wiping it again.

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• Group policy to disable notifications of particular errors?

  - by resolver101

  How do i disable the notifications of particular errors? A little background to my issue. During the installation of the Kaspersky, it disables all the windows firewall for all except the domain. I have remedied this by creating an offline policy in Kaspersky which enables the Kaspersky firewall when out of the office (ie not connected to the office network). The problem now is that users in the office now see a notification showing that the firewall is disabled even though it’s enabled in all scenarios. It’s just that work and home show as disabled when the clients are connected to the office LAN. I’ve looked into the notifications and you can disable the notification (not recommended) but I don’t want to do this incase other relevant messages are stopped from being displayed. http://blogs.technet.com/b/networking/archive/2010/12/16/disabling-firewall-alerts-in-the-action-center.aspx

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• How to see whats taking up space on your hard drive

  - by sam

  Im thinking of switching to one of the macbook pro retinas with a 256gb ssd, im making the move from a 512gb hd, which at the moment is split into a 60bg windows partition (which i dont think im going to have on my new machine) and a 440gb main partition of the main partition ive got 140gb free. So all in if i disregard the 60gb windows part ive got about 200gb free so im using 300gb, which is still a bit to much, ive had this machine 4/5 yrs so its likely to be clogged with files that i no longer need, is there a tool that i can use to view my current hd and see whats taking up the most room, so i can begin to see where i can cut down ? just for a bit of background my current machine runs osx.

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• external HDD with SATA & USB interface?

  - by Greg

  Anyone know of an external HDD that would have (in addition to USB) a SATA (eSATA) port/cable? i.e. Brand/Model. Preferably one of the name brands so I have a better change of finding it here or locally if possible. Background - In one location I want to use it is I would like to increase the performance by cabling it directly to the PC SATA port, HOWEVER I don't want to have to open up the PC to do this each time. I was thinking of running a SATA cable out through the PC case so I just plug it directly into the external HDD in question. Perhaps it should be also externally powered too so I don't need to run a power cable out from the PC power supply.

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• Setting up a lab with Windows 2003 server and windows 7 clients

  - by Tathagata

  We are overhauling a lab with new machines with Windows 7 (as clients - around 150 of them). In the current infrastructure we have students logging in using a generic student id (as having individual student accounts doesn't really serve any additional purpose). This account, as you would imagine is a locked down one that can run a few (age old) softwares required by students in the class. Currently, the individual machines have XP images created by BartPE. What should be an ideal infrastructure design to cater to such a need with Windows Server 2003 and Windows 7 clients? It would be great if you can give me pointers to what concepts and background I need to have (like GPO), any design guidelines, best practices?

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• Accessing local files through an http:// address

  - by RexE

  I would like to access a folder of mp3 files on my local Windows machine through http:// addresses. For example, typing http://localhost:9999/songs/test.mp3 into my browser would play test.mp3, which sits in a specified folder on my C: drive. What is the very simplest way to do this? (Background: a program I'm using wants me to enter the URLs of these files, but assumes they are remote and accessed over http. It doesn't accept URLs of the form file://C/Users.... So, I'd like to give these local files addresses that makes them "look" remote.)

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