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• How to convert poor quality bitmap image to vector?

  - by Macha

  I'm designing a website for a group which has lost the original digital image for their logo. The only file they have of it is a jpg which was embedded into a word document. The image has everything possible wrong with it: Anti-aliased onto a white background where it should be transparent Image artefacts Resized downwards poorly. Lines that should be straight and solid aren't. I've currently used the wand tool to get rid of the white background, and stuck it on the website, but it's poor quality makes it stick out like a sore thumb. I need a few different sizes of it to use, so how would I go about creating a vector image based on it?

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• What can go wrong with a GLIBC upgrade?

  - by Sevenless

  I recently installed a piece of software that my group needs for a research project starting next September. Turns out the software has a known crash bug when used with glibc 2.12.1. My boss asked if we can upgrade glibc on the server that's supposed to run it. Cue my skeptical silence.... At some point, I got it into my brain that messing with glibc was about as good an idea as messing with a hungry puma; however, I've been unable to determine the source of this belief. So, if I go ahead with this: Am I doing something flagrantly stupid (e.g. I won't fix my problem, I will brick my server, or I will initiate a zombie apocalypse)? What can go wrong? What is likely to go wrong? How do I avoid the answers to 2 and 3?

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• Disable the Taskbar in Windows 7

  - by ToastMan

  Hi all, I got Windows Server 2008 and Windows 7. We need to run an application on certain computers with very restricted access to other windows functions. Is there a way to disable the taskbar for client users on W7 computers? I looked in the Group Policies but it's not there. Also, I am aware of Taskbar Eliminator, but it doesn't remove the Start button which is not good for me. Any suggestions are very appreciated. Thank you. Toast

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• CREDSSP 500 errors

  - by Andy Milsark

  Hello all, We are experience a 500 http error when trying to run remote powershell on a win 2008 R2 server. I have run enable-wsmancredssp for both client and server roles on this machine. I have also run "winrm quickconfig". Also the allowfreshcredentials delegation group policy is setup correctly as well. There are active listeners running and credssp is enabled for client and service. I can connect with kerberos (by not specifing authentication type), but the following remote powershell command fails: Enter-PSSession -ComputerName serverX -credential domain\user -Authentication Credssp Error: Enter-PSSession : Connecting to remote server failed with the following error message : The WinRM client received an HTTP server error status (500), but the remote service did not include any other information about the cause of the failure. For more information, see the about_Remote_Troubleshooting Help topic. At line:1 char:16 I have not been able to find any useful information on how to troubleshoot this. I have restarted Winrm, rebooted, disabled and re-enabled credssp. Please help.

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• Mounting FTP as filesystem in debian using curlftpfs

  - by Karel Bílek

  I am trying to mount a FTP as filesystem in debian using curlftpfs. What I get after running curlftpfs -o allow_other username:[email protected] /mnt/myftp/ is just: fuse: failed to open /dev/fuse: Permission denied even when run as root. What am I doing wrong? (curlftpfs is in version curlftpfs 0.9.2 libcurl/7.21.0 fuse/2.8) edit: When I write ls -lah /dev/fuse, I see crw-rw---- 1 root fuse 10, 229 Apr 9 00:34 /dev/fuse ...but even when I add both myself and user root to group fuse, neither me (as a user) or user root can mount ftp, I still see fuse: failed to open /dev/fuse: Permission denied edit2: Even if I write this fairly insecure and crazy line: sudo chmod a+rwx /dev/fuse I still get the permission denied message. Which permissions could be denied? edit3: I forgot to mention I am on VPS with OpenVZ. I thought that there is no issue with this, but apparently, there is! I am adding the resolution as the answer.

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• Exchange 2007: relay only from selected servers based on rDNS

  - by Frank

  I'm looking for a way to make Exchange 2007 only accept mail from a certain group of hosts. These hosts all use the same identifying rDNS entry. Exchange 2003 uses a whitelist based on the reverse DNS, there we could add the hostname to the to the "Domain" field. However, in Exchange 2007 this option seems to be removed. Is there a way to do this? IP's however tend to change. These changes can occur at any time, and it is impossible to keep all the servers up-to-date to the new IP's. Running a script that resolves the hostname and whitelists them accordingly is my last-resort option, but this is not fool-proof. Does anyone know whether this is possible and if so, how? Thanks!

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• I will need a formula showing counts, totals and sub-totals for data set from different sheet

  - by Sapthagiri

  I am using MS2003 EXCEL. I have a cell in Sheet 1 with a color value and totals, with sub-totals. On sheet 2, I have a data set with 3 columns (colors, dress, type). On Sheet 1, I will need a tabulation showing Totals for Colors, with totals at sub-group of dress (shirt,pants) split by type totals (Full, Half, Tee) Below table represents my Data set in Sheet 2 Colors Make Dress Type -------------------------------- Red Arrow shirt full Red Levi shirt half blue Rugger Pant full yellow Wrangler shirt tee yellow Rugger Pant half yellow Arrow shirt tee yellow Wrangler Pant half Green Rugger Pant full Red Levi shirt tee blue Rugger Pant full blue Arrow shirt full blue Wrangler Pant half Green Levi shirt full I will need a formula showing counts, totals and sub-totals on Sheet 1 for data set from Sheet 2. Refer my table below which represent my expected data on Sheet 1, total Shirt Full Half Tees Pants Full Shorts Red 10 8 4 3 1 2 1 1 Blue Green Yellow Please note I am not looking for a Pivot table solution.

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• Storing large amounts of small files into bigger files on Windows

  - by asmo

  Let's say I have 50 GiB of files that weights around 500 KiB each. My guess is that having, for example, 5 large files of 10 GiB each with the same content archived in them would be better for hard drive performance. Am I correct? Will there be a noticeable gain on an NTFS filesystem? ===================================================================== Finally, which tool could I use to group the files together while retaining the ability to modify the content of the archive with zero or minor performance loss? For example, I like TrueCrypt archiving because after mounting an archive file, it creates a drive which I can use seamlessly as if it was a normal drive. The only thing with TrueCrypt is that I don't need encryption/compression, only archiving.

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• Is there a way to delay a forced reboot?

  - by jduff

  I realize this is more appropriate for our company's admin group to field. However, pretend they are unresponsive just for the sake of discussion =) If my system is prompting me to reboot now or in a set time (say in 15 mins) is there a way to delay that even further? It is usually just an inconvenient time and I would like to delay beyond the stated time. (ex) System Restart Required: A newly installed program requires this computer to be restarted. Please save your work and restart your computer. Your computer will automatically be restarted in: xxmins... Thanks for any responses in advance!

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• BitNami LAMP stack on ubuntu

  - by Desmond Liang

  I just installed BitNami LAMP stack on ubuntu. When I visit localhost/127.0.0.1 Apache returns "403 Forbidden. You don't have permission to access / on this server." I try repointing Apache's home directory to another folder (same hard drive, same partition) that's set to 777 recursively. Still getting 403. And then I change the ownership of the directory to under my username and daemon group from root/root. Same error. Am I missing something here?

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• Simple one-way synchronisation of user password list between servers

  - by Renaud Bompuis

  Using a RedHat-derivative distro (CentOS), I'd like to keep the list of regular users (UID over 500), and group (and shadow files) pushed to a backup server. The sync is only one-way, from the main server to the backup server. I don't really want to have to deal with LDAP or NIS. All I need is a simple script that can be run nightly to keep the backup server updated. The main server can SSH into the backup system. Any suggestion? Edit: Thanks for the suggestions so far but I think I didn't make myself clear enough. I'm only looking at synchronising normal users whose UID is on or above 500. System/service users (with UID below 500) may be different on both system. So you can't just sync the whole files I'm afraid.

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• Why can't I copy files from a mac to a samba share?

  - by chris

  I have a share set up on my ubuntu 10.04 box, and the mac can see it, connect to it, and sort of write to it. When I try to copy a whole tree to the share, I get an error saying "The operation cannot be completed because you don't have access to some of the items". If I zip the directory, and copy that over, it succeeds. Any explanation? My smb.conf: [global] workgroup = wg netbios name = ubuntu security = user [Wife Debris] path = /home/wife/wifedebris read only = no guest ok = no force user = wife force group = wife

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• windows service log on as user a/c on different PC on same workgroup

  - by maruti

  trying to run a service (logon as admin@PC2) from PC1, when both are in work-group fails. why could this happen? OS is win-2003 and please let me know if any windows remote services have to be turned on or firewall configuration? does having PC's on same workgroup help? let me clarify the question: I am unable to see other computers from "Services Logon Tab select User" Object types available are only "users, built in security principals" Location is only local computer. But this is available from mmc console..add snap in how can this be available on services control panel?

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• What is the EGG environment variable?

  - by Randall

  A user on our (openSuSE) linux systems attempted to run sudo, and triggered an alert. He has the environment variable EGG set - EGG=UH211åH1ÒH»ÿ/bin/shHÁSH211çH1ÀPWH211æ°;^O^Ej^A_j<X^O^EÉÃÿ This looks unusual to say the least. Is EGG a legitimate environment variable? (I've found some references to PYTHON_EGG_CACHE - could be related? But that environment variable isn't set for this user). If it's legit, then I imagine this group has the best chance of recognizing it. Or, given the embedded /bin/sh in the string above, does anyone recognize this as an exploit fingerprint? It wouldn't be the first time we had a cracked account (sigh).

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• Router's ssid changes from infrastructure to ad-hoc

  - by waldo

  For a period of time the router's ssid is shown (on various computers) as a normal infrastructure network - computers connect fine and everything works however after a few minutes / hours all computers see the same ssid as an ad-hoc network (not infrastructure). At this point a computer that was already connected continues to work - a computer that isn't cannot connect. Rebooting the router temporarily restores the visibility of the correct infrastructure ssid. Is something interfering? Connecting computers: macbook (2009), iphone 3g, windows vista desktop, windows xp desktop. Details: - D-Link DSL-2740B router set to WPA2-PSK (Personal) - Enable Wireless : Yes - Wireless Network Name (SSID) : ###### - Country : Australia - Wireless Channel : 1 - 802.11 Mode : Mixed 802.11n, 802.11g and 802.11b - Channel Width : Auto 20/40 MHz - Transmission Rate : Best (automatic) - Hide Wireless Network : No - Group Key Update Interval : 0 (seconds)

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• MPEG2-TS streaming: UDP or RTP?

  - by Juan Jose Polanco Arias

  Hello I'm working on an IPTV streaming server in Linux (Ubuntu Server 12.04 LTS) that has a DVB-S/S2 card to obtain satellite channels. Then with MuMuDVB I map all channels in the transponder to a multicast group, for multicast transmission. Now for the MuMuDVB software I can either use UDP for transmission or I can add the RTP header. I was wondering what would be the most convenient for MPEG2-TS because I've heard that RTP is used primarily for MPEG4, but It's also said that RTP can be used for MPEG2-TS. Thanks for your help.

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• Python: Check existence of shell command before execution

  - by Gabriel L. Oliveira

  Hi all. I'm trying to find a way to check the existence of a shell command before its execution. For example, I'll execute the command ack-grep. So, I'm trying to do: import subprocess from subprocess import PIPE cmd_grep = subprocess.Popen(["ack-grep", "--no-color", "--max-count=1", "--no-group", "def run_main", "../cgedit/"], stdout=PIPE, stderr=PIPE) Than, if I execute cmd_grep.stderr.read() I receive '' like the output. But I don't have the command ack-grep on my path. So, why Popen is not putting the error message on my .stderr variable? Also, is there a easyer way to do what I'm trying to do?

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• Choosing a Wiki for an academic institute

  - by abhishekgupta92

  I need to choose a Wiki. Please someone help. Following are my requirements: 1) Need good control to the access variables 2) LDAP integration support 3) User Group Support 4) Good Themes and Templates Mediawiki has the problem that it does not support Users Groups that intutively. Twiki and Foswiki have a problem that any authenticated user that has write permissions for a topic also have the write to change the particualar permissions for the topic. Else, can someone suggest me where to look for the answer. I know about the WikiMatrix

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• Choosing a Wiki for an academic institute

  - by abhishekgupta92

  I need to choose a Wiki. Please someone help. Following are my requirements: 1) Need good control to the access variables 2) LDAP integration support 3) User Group Support 4) Good Themes and Templates Mediawiki has the problem that it does not support Users Groups that intutively. Twiki and Foswiki have a problem that any authenticated user that has write permissions for a topic also have the write to change the particualar permissions for the topic. Else, can someone suggest me where to look for the answer. I know about the WikiMatrix

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• Remote desktop connection issues in windows server 2003

  - by rboorgapally

  Hi all, We are running windows server 2003 at our work place. I have enabled the remote desktop connections. I have also added all the users who connect to the server(three to four people) to the RDC group of users. Many of these users are also having Administrator access. The problem we are facing is that the connection is suddenly lost when we are working on something. Also, at times the system restarts by itself. Is this issue related to the limit on the number of users able to connect to the system? If so, why does the system accept new connections and/or terminate the existing connections? Has this anything to do with the users having administrator access so that all have equal prority and that is why existing connections are stalled? Also, please differentiate between console remote desktop and non console remote desktop.

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• Why aren't Heroku syslog drains logging to rsyslogd?

  - by Benjamin Oakes

  I'm having a problem using syslog drains as described in https://devcenter.heroku.com/articles/logging. To summarize, I have an Ubuntu 10.04 instance on EC2 that is running rsyslogd. I've also set up the security groups as they describe, and added a syslog drain using a command like heroku drains:add syslog://host1.example.com:514. I can send messages from the Heroku console to my rsyslogd instance via nc. I see them appear in the log file, so I know there isn't a firewall/security group issue.  However, Heroku does not seem to be forwarding log messages to the server that heroku drains lists. I would expect to see HTTP requests, Rails messages, etc. Is there something else I can try to figure this out? I'm new to rsyslogd, so I could easily be missing something.

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• How to prevent unison syncronize file when file process uploading

  - by user134600

  I use CentOS 5.8 Final. My situation is I running unison with cron where script below : */1 * * * * /usr/bin/unison /dev/null 2&1 and default profile like below : root = /var/www root = ssh://web02.example.com//var/www auto=true batch=true confirmbigdel=true fastcheck=true group=true owner=true prefer=newer silent=true times=true So in every minutes will syncronized www folder . My problem are : I upload file with size bigger than 10 MB to www from client with user1 permission where www folder is user1 owner. file in processing uploading then unison running in that minute and suddenly file upload owner changed to root:root When I editing file in www folder then I save when unison running, file owner changed to root:root where should be user1:user1 Is there anyone know about this problem?

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• Monitoring System for the cloud?

  - by Maxim Veksler

  I need a monitoring system, much like ganglia / nagios that is build for the cloud. I need it to support : Adding / removing nodes dynamically. (Node shuts down, dose not imply node failure...) Dynamic node based categorization, meaning node can identify them self as being part of group X (ganglia gets this almost right, but lacks the dynamic part...) Does not require multicast support (generally not allowed in cloud based setups) Plugins for recent cool stuff such as Hadoop, Cassandra, Mongo would be cool. More features include: External API, web interface and co. I've looked at Ganglia, munin and they both seem be almost there (but not exactly). I would also go for reasonably priced Software as Service solution. I'm currently doing research, so Suggestions are highly appreciated. Thank you, Maxim

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• Accept incoming L2TP connections on Windows 7

  - by Greg

  Windows 2003 can be configured as a VPN server that uses L2TP with a preshared key. Windows 7 can be configured to accept incoming VPN connections, presumably using PPTP. Is there a way to configure Windows 7 to accept incoming L2TP connections? The configuration settings for incoming connections is extremely sparse; I don't see any place to enter a preshared key or specify the protocol to use. Perhaps it is beyond the capabilities of Win 7, but I hold out hope that I'm overlooking some Group Policy settings or registry edits that allow it.

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• Best practice Raid groups for EqualLogic PS6510X

  - by 20th Century Boy

  We are thinking about purchasing 4 x EqualLogic PS6510X SANs (the Sumo boxes). Each has 48 x 600GB 10k SAS drives. They will be stacked to form a logical pool of storage (all in the same location). I understand that when you create a RAID group its done on a "per box" basis. So one box could be Raid 50, another Raid 10 etc. My question is, should I make one box a "performance" box ie Raid 10, and the other boxes "standard" ie Raid50? How do people configure their EQL arrays in the real world?

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