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• How can you invert the colors of a PDF?

  - by legr3c

  I need to invert all the colors of a PDF document (background, text, graphics, and images). I want it persistent in the file so the inverted viewing options, that some viewers offer, won't help. Rasterizing the document and using image manipulation software is also not an option. I read somewhere that this can be done with the Enfocus PitStop plugin for Acrobat. However I didn't see a corresponding command anywhere. Am I missing something? Then I read that the ARTS PDF Crackerjack plugin for Acrobat offers negative printing so I tried that, too. The option is there but it simply doesn't work. I have been searching for very long for a way to do this. It seems like a common enough task but I just can't find out how to do it. Are there maybe any virtual printer drivers or something of the sort that support negative printing? Can anyone help?

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• Low-cost, Flexible Log Aggregation [closed]

  - by Dan McClain

  I'm starting to have quite the collection of Ubuntu VMs that I must manage. I'm starting to investigate Puppet for managing the configuration of all of them, and apticron to let me know what's out of date. But the issue I feel I should deal with sooner than later is log aggregation. I'd like to stay in the free/open source realm for now, seeing that we don't have much budget for something like splunk yet. In addition to syslog, I would like to collect application specific logs (We are running different apps on different machines, from nginx+passenger for rails, to Apache+Tomcat for java, to PHP for expression engine, and mysql/postgresql database server), so that we can analyze the relavent data. For now, I'm just looking to get all the logs one place.

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• Installing Windows XP sp3 into USB 2.0 WD 320Gb Hard Drive

  - by NetKabuki

  I have a HP laptop with support for 3 USB 2.0 ports. I also have a clean 320Gb WD USB 2.0 drive. The HP can boot from USB (Bios options). I used the install disk (XP SP3 bootable) and after a few stutters, was actually able to load up a partition on the 320Gb drive with Windows. I cannot consistently get the system to boot up off the USB drive. I am able to drop Ubuntu on that same WD drive and boot up. I can even get Grub2 on Ubuntu to recognize the Win OS. But booting the Win OS is an impossible task. What can I do differently - if anything?

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• Firefox does not load certificate chain

  - by TimWolla

  I'm running lighttpd/1.4.28 (ssl) on Debian Squeeze. I just created a http://startssl.com certificate, I runs fine at all of my Browsers (Firefox, Chrome, Opera), but my users are reporting certificate-errors in Firefox. I already nailed it down to a failing of loading of the certificate chain: Certificate at my Firefox: http://i.stack.imgur.com/moR5x.png Certificate at others Firefox: http://i.stack.imgur.com/ZVoIu.png (Note the missing StartCOM-certificates here) I followed this tutorial for embedding the certificate in my lighttpd: https://forum.startcom.org/viewtopic.php?t=719 The relevant parts of my lighttpd.conf look like this: $SERVER["socket"] == ":443" { ssl.engine = "enable" ssl.ca-file = "/etc/lighttpd/certs/ca-bundle.pem" ssl.pemfile = "/etc/lighttpd/certs/www.bisaboard.crt" } ca-bundle.pem was created like this: cat ca.pem sub.class1.server.ca.pem > ca-bundle.pem I grabbed the relevant files from here: http://www.startssl.com/certs/ www.bisaboard.crt was created like this: cat certificate.pem ssl.key > www.bisaboard.crt Where certificate.pem is my StartSSL-Class1 Certificate and ssl.key my SSL-Root-Key. Do you have any idea why the second Firefox does not correctly load the certificate-chain?

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• XFCE: active panel buttons when mouse is on screen edge

  - by Dave Vogt

  I'm using XFCE 4.6.1 (Xubuntu distribution) on my laptop and main computer; the settings are approximately the same. so far for the intro. What I'm experiencing is that when going to the screen edge over the task bar on the laptop, the button under the mouse is active. On the main machine however, having the mouse on the screen edge, the button below it doesn't react at all! Only if I move the pointer towards the center a bit, the hover highlight starts and the button becomes clickable. I've tried to change the panel size, desktop theme and a few other settings, but none seems to cure that problem. Is there something that causes this problem? (Googling also seems to give no results)

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• Unable to understand a line in Google CodePreview's README

  - by Masi

  The README is in Google's codepreview which uses Google-appengine. To run the app locally (e.g. for testing), download the Google App Engine SDK from http://code.google.com/appengine/downloads.html. You can then run the server using make serve I run make serve in my terminal after moving Google-appengine.app to my Application -folder in OS X Leopard. I get make: *** No rule to make target `serve'. Stop. How can you run the make serve to run the server for Google AppEngine?

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• Windows 2003 Enterprise Server becomes unresponsive occasionally

  - by Derek Ivey

  We're experiencing issues with our Windows 2003 server, which runs SQL Server 2005 SP1. We notice that sometimes the entire server becomes unresponsive and I captured a screenshot of the task manager when this happened. I noticed that the processes are not displayed during this time and all of the memory information and handles disappear (as shown in the screenshot). Does anyone have any ideas as to what could be wrong with this sytem? I'm planning to take it down over the weekend to run Memtest86. Screenshot: http://dl.dropbox.com/u/2058/windows_screenshot.png The issue is resolved by a reboot, but I'd like to figure out the cause of this and get it fixed. I also tried to run a ping when this occurred and I got the following error in the event log: "Application popup: ping.exe - Application Error: The application failed to initialize properly (0xc0000142). Click on OK to terminate the application." Thanks, Derek

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• multiple wildcard entries

  - by Murali

  my client has around 300,000 domains and they just have a wildcard for all of them * A 12.12.12.12 Now they want to create a sub domain that points to a different IP and still have the flexibility of wildcard, something like ww1.* A 24.24.24.24 * A 12.12.12.12 Looks like in BIND, the lower "*" is catch-all and taking over every query and hence ww1 is not working. One of solutions offered by IT folks was to create seperate 300K zones for just "ww1" and leave the "*" wildcard. Are there any other DNS software's that can achieve this task easily? Any other ways to deal?

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• Windows 7 randomly installs an "Unknown Device" successfully

  - by Amazed

  Rarely (several days to weeks between occurrences,) and seemingly at random, I get a balloon notification from Windows 7 (x64 SP1 Home Premium) that it is installing hardware for me. Whatever is being installed does so without error. However, no new hardware has been installed or plugged in! When I click the balloon it doesn't give me any useful information: Looking in the event log, I find this entry: Event ID: 20001 Source: UserPnp Task Category: 7005 Message: Driver Management concluded the process to install driver FileRepository\usb.inf_amd64_neutral_153b489118ee37b8\usb.inf for Device Instance ID USB\VID_0000&PID_0000\6&3AF9A177&0&0060&&02 with the following status: 0x0. It appears to be USB related. My motherboard has both USB 2.0 and 3.0 controllers. My keyboard and mouse are plugged into the 2.0 slots and the data/recharge cable for a tablet (but not the tablet itself) was plugged in to the 3.0 slot. No other USB devices have been attached for several days/reboots. Why is Windows doing this?

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• "File does not exist" in apache error log.

  - by Samuurai

  Hi, This is an example of an error in out log file: File does not exist: /var/www/website/female, referer: http://www.website.com/female/dresses/A-Dress-Black "/female" doesn't exist, because we use friendly urls via our .htaccess file which looks like this: RewriteEngine On # Turn on the rewriting engine RewriteBase / RewriteCond %{http_host} !^www.website.com$ [nc] RewriteRule ^(.*)$ http://www.website.com/$1 [r=301,nc,L] RewriteRule ^News/?$ news.php [NC,L] RewriteRule ^About/?$ about.php [NC,L] RewriteRule ^Contact/?$ contact.php [NC,L] RewriteRule ^Sign-In/Create-Account?$ sign_up_in.php [NC,L] RewriteRule ^Logout?$ sign_up_in.php?l=1 [NC,L] RewriteRule ^Your-Bag?$ your_bag.php [NC,L] RewriteRule ^Help?$ help.php [NC,L] RewriteRule ^Profile?$ profile.php [NC,L] RewriteRule ^Create-Profile?$ profile_create.php [NC,L] # ITEM RewriteRule ^([A-Za-z-]+)/([A-Za-z-]+)/([A-Za-z0-9-]+)/?$ store_focus.php?sex=$1catName=$2&permalink=$3 [NC,L] # PAGE RewriteRule ^([A-Za-z-]+)/([A-Za-z-]+)/page/([0-9]+)/?$ store.php?sex=$1&catName=$2&page=$3 [NC,L] # CATEGORY RewriteRule ^([A-Za-z-]+)/([A-Za-z-]+)/?$ store.php?sex=$1&catName=$2 [NC,L] # SEX RewriteRule ^([A-Za-z-]+)/?$ store.php?sex=$1 [NC,L] Every request for a page results in an error. Has anyone encountered this before? Thanks! Beren

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• How to change image to this color?

  - by askmoo

  I have this image And I need to change it to the color #D21108 (type of RED). Of course, I do not want to paint it to this color, but to change the color to #D21108 and its shades (like I do in Photoshop via Brush Colour Replacement). I have all info about this color, values of RGB, CMYK, Lab and HSV if you need them. Now, I guess I can easily change it via GIMP's menu "Colors". I tried options Color Balance, Hue-Saturation, Colorize, but I did not find a way to enter the starting color I need. I was closest to my aim via Hue-Saturation, but I could not get this red value, no matter what I tried. As I am not a graphics expert, please tell me how to accomplish this task. PS. What's the meaning of Lab and HSV in the color scheme? I know the meaning of RGB and CMYK.

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• Is there a way to capture the "network user name" and the "host name" during a "login failed" alert

  - by Jorge Rivera

  I am a SQL Server 7 DBA and I would like to "improve" the default "Login failed" alert that brings SQL 7. I need a way to know what "user" (network user name) was trying to connect to the server (not only the SQL user account) and I would like to know from where the user was trying to connect (the hostname). Does someone know if this is possible? Using the SQL Profiler is not the best way since is a resource consuming task. Would be a way to setup an alert for doing this? Thanks in advance.

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• easy Switching to open folders on a mac

  - by Charles

  How do I easily switch to an open folder on a mac? In windows, which I'm used to using, I can see all my opened folders in my vertical taskbar, all i need to do to switch to another window is click on the folder in the task bar. There's no taskbar in mac, and when i have a lot of folders opened, ie, lots of finder windows, how can I switch between them? The way i'm doing it is, i put expose on an active corner and switch that way. However that's still damn hard, because first i have to bring up expose, and then find my window. The folders are placed in a random position between opened apps, the folders are not in a list, and on a big screen i have to scan the whole screen in order to find the one i want... etc. Is it really this hard just to switch to a different folder on a mac? :(

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• I split partition in Windows 7 home edition but the Windows doesn't reboot

  - by Samnan

  I Have Geniune Windows 7 home edition and my Laptop is Pavilion HP DV6 . I had only 1 partition of 500+ GB i Wanted to make another partition. I read somewhere in forum that I have to make my C: logical and then I'd be able to split C: I did the same thing using Partition Wizard. I made C: of 125 GB and shift rest of the space in New drive. I made a bootable disk, performed all the task using partition Wizard After that I have not been able to boot my windows. Even after running system restore several times.

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• Idiomatic way to invoke chef-solo?

  - by kerkeslager

  What is the idiomatic way to invoke chef-solo? Most sites do this: chef-solo -c ~/solo.rb -j ~/node.json -r http://www.example.com/chef-solo.tar.gz But that's long. There are a few shorter ways to do this that I can think of: A rake task (rake chef-solo). A small shell script (run-chef-solo). An alias (can override the name, like chef-solo). What is the idiomatic way to do this? How are other chef users invoking chef?

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• I can't run uwsgi as normal user

  - by atomAltera

  I want to run uwsgi server as www user, but if I write: uwsgi --socket $SOCKET --chmod-socket 666 --pidfile $PIDFILE --daemonize $LOGFILE --chdir $CHDIR --pp $PYTHONPATH --module main --post-buffering 8192 --workers 1 --threads 10 --uid www --gid www A socket creation error occurs: Log: 1 *** Starting uWSGI 1.4.1 (64bit) on [Mon Dec 10 22:15:23 2012] *** 2 compiled with version: 4.4.5 on 17 November 2012 23:31:14 3 os: Linux-2.6.32-5-amd64 #1 SMP Sun Sep 23 10:07:46 UTC 2012 4 nodename: autoblog 5 machine: x86_64 6 clock source: unix 7 pcre jit disabled 8 detected number of CPU cores: 2 9 current working directory: / 10 writing pidfile to /tmp/uwsgi_mysite.pid 11 detected binary path: /usr/local/bin/uwsgi 12 setgid() to 1002 13 set additional group 1004 (files) 14 setuid() to 1002 15 *** WARNING: you are running uWSGI without its master process manager *** 16 your memory page size is 4096 bytes 17 detected max file descriptor number: 1024 18 lock engine: pthread robust mutexes 19 unlink(): Operation not permitted [core/socket.c line 109] 20 bind(): Address already in use [core/socket.c line 141]

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• Restoring an Exchange 2010 user's calendar without rest of mailbox

  - by AlamedaDad

  I am trying to restore a user's calendar from backup, which was deleted by a sync problem on her mobile device. I've been able to restore her mailbox without a problem but I had to link it to a new AD user since she deleted the calendar several days before she reported the problem and the current backups of her account didn't include any calendar events, but all of her current email. I had to restore the mailbox from the day before she deleted everything. I've tried sharing the calendar and opening it in her account, then copying or moving the contents, but I get an error that outlook can't do the task because there are personal items. I tried bringing up the "Recovery User" I created, in Outlook and exporting the calendar events to a .pst, then importing them into the user's real account, but they all get created in a sub-folder called "Recovery User." In case it matters, she's running Outlook 2010 and we're using Exchange 2010 SP1. Thank in advance for help with this problem...Michael

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• Windows 2008 terminal server - How to restrict access to DVD/floppy?

  - by test1839

  I has a very simple task. I need to block access to removable media (CD, DVD, floppy, USB drives etc.) on a Windows 2008 R2 Terminal Server for users and allow it for admins. I tried to enable the following policy in GPO: User Configuration/Administrative Templates/System/Removable Storage Access All Removable Storage classes: Deny all access = Enabled But it did not work. I tried different physical and virtual 2008 servers with the same result. It works on Windows 7 but not on Windows 2008. Has anyone had success with this parameter on Windows 2008? Thank you

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• Unable to logoff, disconnect, or reset terminal server user in production environment

  - by l0c0b0x

  I'm looking for some ideas on how to disconnect, logoff, or reset a user's session in a 2008 Terminal Server (unable to login as the user either as it is completely locked-up). This is a production environment, so rebooting the server or doing something system-wide is out of the question for now. Any Powershell tricks to help us with this? We've tried killing the session's processes too, directly from the same terminal server (from the task manager, Terminal Services Manager and the Resource Monitor) with no results. Help!

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• Accessing localhost on my iPhone

  - by mohabitar

  I've found similarly titled questions, but none that directly address my issue. I'm running Google App Engine server on my Macbook, and it was configured to use port 8080 on localhost. And so anytime I wanted to run my site, I'd just go to localhost:8080/saveuser and everything worked fine. Now, I want to access this same site on my iPhone. I can't just do localhost on my iPhone, so I set up Web Sharing on my mac, and it's set up to http://192.168.1.106/~mohabitar. I can access this from my iPhone, but it only displays a directory of my files, and doesn't actually run the Python script. The only way my Python scripts actually run is if I do localhost:8080 on my computer. What can I do about this?

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• tool for monitoring network traffic on Windows 7 Home

  - by Xah Lee

  for Windows 7 Home Edition: can anyone recommend a tool to monitor network traffic? either build-in or 3rd-party. I like to have a graph view (e.g. as in Task Manager) but also nice are tool that lets me see what IP/port that's incoming/outgoing. Command line is fine. Or even some tutorial. Thanks. (am old unix sys admin and web app dev. Though not much of a network admin and don't know much Windows. I need this tool just for my home PC, not in any pro capacity.)

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• Coldfusion deployment under Apache Tomcat with Virtual Hosts

  - by smalltiger85

  Hello, I'm looking for the proper way to share the Coldfusion engine for all my Virtual Hosts. This is how I have the virtual hosts configured on server.xml in the Tomcat conf: <Host name="localhost" appBase="webapps" unpackWARs="false" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> <Context path="" docBase="cfusion/" reloadable="true" privileged="true" antiResourceLocking="false" anitJARLocking="false" allowLinking="true"/> </Host> <Host name="mysite1" appBase="webapps" xmlValidation="false" xmlNamespaceAware="false"> <Context path="" docBase="/mnt/webroot/mysite1" /> </Host> This is not valid for me because I'm instantiating one Coldfusion process for every virtual host, and it requires me to copy the WEB-INF folder in every site. My question is, is there any way to share the same Coldfusion instance for every virtual host, mantaining the sites webroot outside of the cfusion folder? I'm using Apache Tomcat 6 and Coldfusion Enterprise edition 8. Many thanks.

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• If using eMule, how to keep current downloading files while adding a hard drive?

  - by the searcher

  If there are still downloading files (ones that will need extra 2 week or unknown time because they are rare files) but need to use a new hard drive because no space is left in hard drive, then is there a way to use new hard drive while keeping existing downloads ongoing? That's because if we change the folder in eMule from G: to H:, then all existing downloads will disappear too... Update: I can move the completed files over to the new hard drive... but it is going to be a never ending task... (old hard drive gets full... move some... and repeat)

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• windows server 2012 remote desktop - Send messages between standard users

  - by Scott Kramer

  Does anyone know the policy, or registry change, etc. for allowing messages (on the same server) between standard users... an elevated cmd prompt or task manager works of course... but need it to work on standard accounts. H:\>msg scott hi Error sending message to session RDP-Tcp#0 : Error 5 Error [5]:Access is denied. (This is windows server 2012) Also I recall setting something on server 2008 r2, but just can't remember what it was, so it can be done-- Thanks!

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• Good Books About Scaling Up Databases/Servers/etc.?

  - by Mehrdad

  I've applied for an internship at a startup company that expects its user base to grow by a large factor in a small amount of time, and so part of their project is to scale everything up so that they're ready: handling more/larger requests efficiently, handling server failures, load balancing, getting more JavaScript to run faster on the client computers, etc. Part of my job will also be figuring out what to do, so it's not obvious what my exact task will be at the moment. I was told that I should start reading up a little more about this so that I would have a little bit of an idea of what to do. What are some good books for me to read on this topic? I have a little bit of experience with the usage of MySQL (and also a little experience with web development), but in no way do I claim any knowledge on the internal workings of databases or distributed systems, so I might need readings more on the introductory side.

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