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• How Can I Edit Google Chrome's 'History Provider Cache' File?

  - by dissolved

  I'm interested in editing (not completely deleting) contents of some of Google Chrome's cache files. In particular, the 'History Provider Cache' (found in ~/Library/Application Support/Google/Chrome/Default on Mac). As this other question suggests, it appears to simply be a SQLite file. Unfortunately, when I try to open it using a SQLite browser (MesaSQLite) I'm asked for an encryption key. So, I'd welcome any suggestions on how to either (1) determine the encryption key, or (2) an alternate way to edit this file. The end goal is to be able to remove specific annoying suggestions in the Omnibar. I've read countless other techniques, but none seem to remove suggestions that have the clock icon next to it. Some say deleting this file entirely will do the trick (and I imagine it will), but I don't wish to trash my entire browsing history. I find most of the suggestions to be useful and helpful, and I'd like to preserve that.

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• Host forwarding fails, server is up, domain name tests ambiguous

  - by jayunit100

  I have a domain name registered with http://www.registryrocket.com/ The "main" site, which is called rudolfcode.net, is registered under godaddy, and forwards to a heroku site (rudolfcode.herokuapp.com). I have found that the main site, rudolfcode.net works, but the hostgator forwarding has stopped working (firefox simply fails when you point to http://www.rudolflabs.com, which is the domain name registered by hostgator). How can I debug this issue ? Finally, I have tried to run some DNS tests, and here are the results : Im not sure what the failures mean .... But Im pretty sure that "Conecting to WWW Home Page" failed is a pretty bad sign ! Thanks.

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• Windows 7 Permissions

  - by Scott

  I have an odd problem with a windows 7 laptop. It's a single user installation currently. This is a fresh install on an Asus laptop. I have a svn repo checked out on my second partition. I have a directory which I have added to svn:ignore list, because it is for tmp files. This specific directory shows as read-only. I need write access on this directory for my project to function properly. If I right click and modify the directory to be not be read only and run this recursively, it simply is immediately reverted back to a read-only directory. I have also modified apache's service to run as myself to no avail. I'm stumped... Any ideas?

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• Why do most routers not include local DNS?

  - by user785194

  I need to change my firewall/router, and I'd prefer something with built-in DNS to resolve queries on the local subnets. I've got a mixed Linux/Windows system, often with only one computer turned on, and I frequently have problems resolving local names. I don't want to keep a Linux box permanently on just for DNS, and I'd prefer to have DNS in my router appliance, which is always on. I search Google for this occasionally but never find anything. You always get the obvious answers - it's not possible, put everything in /etc/hosts, NetBIOS, dedicated box, etc. So what am I missing? Why don't "cheap" routers let you do this? I'm pretty sure that Cisco kit does this. Almost all cheap routers will let you do MAC address reservation, to let them assign static IP addresses for DHCP. So why can't they simply do DNS as well for everything on the local subnets, just passing through remote domains to the ISP?

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• What can impact the throughput rate at tcp or Os level?

  - by Jimm

  I am facing a problem, where running the same application on different servers, yields unexpected performance results. For example, running the application on a particular faster server (faster cpu, more memory), with no load, yields slower performance than running on a less powerful server on the same network. I am suspecting that either OS or TCP is causing the slowness on the faster server. I cannot use IPerf , unless i modify it, because the "performance" in my application is defined as Component A sends a message to Component B. Component B sends an ACK to component A and ONLY then Component A would send the next message. So it is different from what IPerf does, which to my knowledge, simply tries to push as many messages as possible. Is there a tool that can look at OS and TCP configuration and suggest the cause of slowness?

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• cat contents of one file into another file

  - by Attila O.

  I have a large (binary) file that has some corruption near the beginning. Then, I have a second, smaller file that I obtain by starting to download the same file again, but interrupt after I have enough bytes to fix the original one. My question is, how do I simply overwrite the beginning of the large file with the contents of the second, smaller file? I could use cat, tail and head, but that would create a copy of the file. There must be a more efficient way. Oh yes, and I'm looking for a linux command-line solution, if that wasn't obvious. I'm using bash, but I have other shells if that helps.

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• Icon on user account desktop before the user has logged in.

  - by JHamill

  Currently working on a Windows 7 deployment project and I have a requirement to place an RDP icon on a specific users desktop, lets call this user 'Guest'. The image itself will be completely vanilla and all user accounts will be created using commands in the Unattend file. The 'Guest' account will not be a local admin and so it will not be the account used for autologon during the application of the unattend file. As a result of this, the 'Guest' profile will not have been created so I'm unable to simply place the icon at C:\Users\Guest\Desktop. Is there a way to place an icon on this specific users desktop prior to logging in with it? I know there are ways around this i.e. include this account in the base image and log in with it in order to create the profile but I'd like to keep the base image as vanilla as possible. Any ideas or pointers would be greatly appreciated. Thanks in advance.

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• How to backup metro "app" data, manually

  - by ihateapps

  I'm a PC tech and I have been getting more and more Windows 8 issues. First off I hate metro, and secondly I hate "apps". I like to do fresh installs of Windows8. I backup my user's data and then fresh install. Assuming there is no recovery partition how can I manually backup the user's app data so that in the event of a reformat I simply redownload their apps (dumb, I wish there was a way to actually back them up too) and plop the data back in. Do most normal people even use "apps", or do they use Windows8 like a desktop OS? I totally dropped metro with ClassicShell.

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• How to change internal page numbers in the meta data of a PDF?

  - by YGA

  I have a pdf document I created through non-Acrobat means (printing to pdf, then merging a bunch of pdfs), but I'd like to manually change the page numbers (i.e. the first several pages are simply title pages, the page that is labeled "page 1" is really the 7th sheet of the pdf). What's the simplest (and ideally, free) way to do this? To be clear, I am not trying to change the numbers on the pages themselves, but the page numbers in the "metadata" that the pdf stores (the pages themselves are already numbered correctly; I just want "go to page 1" to go to the page labeled 1, which could be sheet 7). For what it's worth, I'm on Windows, though I have access to Macs as well.

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• How to move an existing Win7 setup to a RAID-1 array?

  - by Matthew Scharley

  Currently I have a the following setup: Drive A/B: Identical HDD's Drive C: 2TB external drive with plenty of space currently. Hardware RAID controller Currently I have Drive A which is my boot drive (Win7), and Drive C which is a data drive, and Drive B which I only recently received and is blank. What is the best way of moving off of Drive A, setting up the hardware RAID and then migrating my data back onto the RAID array? I'm proficient with Linux, but I'm not sure if I can get away with simply using dd here. There is currently enough free space on Drive C to take 5-6 copies of a disk image of Drive A, so space isn't an issue.

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• apt - Remove not configured package

  - by madflow

  I have a Linux-Mint Debian Edition System. When I install sendmail I get an infinite loop. Reading configuration from /etc/mail/sendmail.conf. Validating configuration. Creating /etc/mail/databases... Reading configuration from /etc/mail/sendmail.conf. Validating configuration. Creating /etc/mail/databases... When I try dpkg --configure -a it is the same. Now I want to simple remove sendmail from the installation queue - but I can't simply do that, because apt-get always wants to configure sendmail first. Is there a way to force apt-get to remove sendmail or set it to "configured" - even though the package is not properly configured?

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• Network Block Device (NBD) clients for Windows or similar solutions

  - by przemoc

  Are there any NBD clients for Windows? Strangely, I cannot find any, or I am searching for them in a wrong way. Such client should be possibly a driver with front-end tool (may be a command-line one) allowing to create virtual drives and associate them with given hosts (or simply localhost) and ports where NBD servers are listening. From user perspective virtual drive should be close to what physical drive is, so it should be accessible as something like \\.\PhysicalDriveX (maybe \\.\VirtualDriveX?), be visible in Disk Management (diskmgmt.msc) and mountvol tools at least. (The only thing I found remotely close to NBD on Windows is ImDisk's proxy mode and companion tool devio, but AFAIK ImDisk only works at partition level (so no virtual drive) and devio uses different protocol.) Secondary question is: Are there any (preferably simple) Windows-specific solutions allowing creation of virtual drive delegating read/write request to user-space via some explicit way (like via TCP, IPC, DLL implementing given API, etc.)?

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• Is there an encrypted write-only file system for Linux?

  - by Grumbel

  I am searching for an encrypted file system for Linux that can be mounted in a write-only mode, by that I mean you should be able to write/append files, but not be able to read the files you have written. Access to the files should only be given when the filesystem is mounted via a password. The purpose of this is to write log files and such, without having the log files themselves be accessible. Does such a thing exist on Linux? Or if not, what would be the best alternative to create encrypted log files? My current workaround consists of simply piping the data through gpg --encrypt, which works, but is very cumbersome, as you can't get easy access to the file system as a whole, you have to pipe each file through gpg --decrypt manually.

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• Web Site Monitoring/Tracking Freeware

  - by jsmith

  I need to be able to track Web Sites visited on a computer and send them to an email address on a daily basis. Keylogger software seems like too much, I want something lightweight that simply monitors websites visited and forwards them on. I was hoping for freeware, but if it's cheap/simple and easy to use I'm willing to pay. I know similar questions have been asked about website traffic monitoring, but it's not quite the same thing, and I can't seem to find an answer to this question anywhere. Thank you ahead of time.

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• Monitor status while using VNC

  - by kumar

  So after connecting to a vnc server via vnc viewer to my desktop (remotely), Is it possible to know whether the monitor connected to the CPU is switched ON or not. Simply put, from command prompt how do you know whether monitor is ON/OFF from command line. Here, Basically I am bit worried about privacy as my monitor can be viewed by anyone while accessed remotely. Any solution? Obviously there is a option to switch off the monitor while starting the vnc server at remote side but I am looking for a better solution to control monitor(possible??) remotely. Thanks!

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• Tuning MySQL to consume less memory

  - by Alex

  I have a VM which has 2GB Ram, (full specs) And I am setting up a site which has one table in particular with over a million records. There's little or no usage of this particular database (perhaps once or twice a day) but simply running mysql grinds the whole server to a halt. I've looked through the top results but nothing is really denting the CPU however the memory seems to be the issue. The site isnt even live of taking requests yet. the memory situation looks like this: # free -m total used free shared buffers cached Mem: 2006 1880 126 0 3 53 -/+ buffers/cache: 1823 183 Swap: 2047 345 1702 Are there any good pointers to tune mysql to stop hogging the system memory? Thanks very much EDIT: (requested by 8bit): http://tny.cz/b41a0b12

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• How can I start an X11 session on my headless Fedora 13 server?

  - by DR

  I have a small home server using Fedora 13 as operating system. Since the upgrade to Fedora 13 I cannot start the X11 server. (I need it to use vnc) When I try to start the server, both the nouveau and the original NVIDIA driver claim that there's no physical monitor attached (which is true) and that the X server cannot start because the initial display modes cannot be probed. I tried to manually add the display modes to xorg.conf but they seem to be ignored. Some forums suggest to simply use the VESA driver in this situation, but since I can't get it run either (different, more obscure message) I want to get it working with the nouveau driver as a matter of principle. Temporarily attaching a monitor would mean a lot of work for me ( 1 hour and currently it's almost 35°C/95°F in my home) I want to try that only if that definitely fixes the problem and stays that way if I remove the monitor again) How can I make the driver work without having a physical monitor attached? Thank you for your time and your help!

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• Inverting 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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• How to reference individual cells in Excel to variable data from records in an external SQL table

  - by user273476

  I have a SQL table containing date oriented financial data eg. multiple daily records with fields for Date, Account code and Value. I want to set up dynamic links (formulas) from cells in an Excel speadsheet to this data so when the spreadsheet is loaded the data is fetched from all the relevant records. The spreadsheet has the Account codes on the x axis and Dates on the y. Each day the SQL table has new data in it for the new day and I want the spreadsheet to reference this new data for the column for the new day. Any ideas? I have seen how you can generally bring in data from a SQL table (in our case using ODBC as it is not MS SQL) but the data is not simply bringing in multiple records as you would a CVS file but specific records in the SQL table referencing to specific cells and columns in the spreadsheet.

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• Virtualhosts - best way of dealing with it?

  - by axqe56

  I'm competent at the basics of Apache, PHP and virtual hosting but have a question about virtual hosting. As far as I'm aware, HOSTS files can only be in one of the following locations: C:/Windows/system32/drivers/etc (varies in older installs, I believe) I don't think it can be put elsewhere for use with Apache, simply for virtual hosts, and the main HOSTS file for blocking sites etc. I heard about PAC files on Uniform Server's website (http://wiki.uniformserver.com/index.php/Virtual_Hosting:_PAC) but they're browser-specific though, aren't they? What's the best way to deal with virtualhosts, other than HOSTS file? My server isn't currently open to the internet yet, but if it is, what's the best way to resolve DNS for my virtualhost domains if it were to become forward-facing (i.e open to the internet)?

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• When exchange receives message, send notification to another address

  - by Rick Kierner

  I have an internal exchange 2010 server that receives no outside email and sends no email outside. I'd like to send a notification email to an outside email when a user receives a message on the internal exchange server. This message would simply say "A Message has been sent to your XYZ Email, go check it" Theoretically, the AD would have an external email address associated with the user's AD Account. I'm hoping that a process could be triggered when an email is received on this exchange server and I could take some type of action to look up the AD account for the recipient, grab the external email address and send a standard email to that user. This would be a global rule for all exchange accounts. The problem is that I don't know where to start. Thanks!

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• ssh into my mac from my ipod

  - by mechko

  Ok so this is what I got, but it don't look right... The set up is as follows: My Mac is on a wireless network, presumably behind a firewall over which I have no admin privileges. Further, said wireless network changes my internal IP randomly at random times, so I do not know what my ip is. Note that localhost is a variable ip I forward some port or the other to my dns: ssh -R 19999:localhost:22 sourceuser@remotehost connect to my remotehost from my machine: ssh sourceuser@remotehost and then connect to the port I forwarded: ssh localhost -p 19999 [solved] Second question, there are a bunch of ssh clients for the iphone. Which one should I use? EDIT: Since jailbreak is not illegal, simply frowned upon by the Corporation, I've decided to go with that. I have a nice shell with openssh and the works. Best of all, it's free and it does exactly what you expect.

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• Excel SUM From Different Sheets IF Date Found

  - by user329005

  I have a workbook with separate sheets for each product (about 20 sheets, adding more on a regular basis). Each product is only available for a certain time frame, and has daily sales data recorded on that product's sheet. I want an overall snapshot across all products from any given date to be consolidated on a new sheet. This would sum from a particular column on each of the other sheets if a corresponding date exists. I have a moderately passable function right now that has a separate VLOOKUP for each product sheet like SUM(IF(ISERROR(VLOOKUP(DATECELL,SHEETNAME!ARRAY,COLUMN... next VLOOKUP, next VLOOKUP etc., but it's incredibly cumbersome to update each function when a new product is added. I'm thinking there's a much easier way utilizing a named group (sheet names), SUMIF, VLOOKUP etc. Then when a new product sheet is added, I can simply add the sheet name to the named group rather than editing all the functions. Any help would be much appreciated!

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• Server downtime - are these APC warnings the cause?

  - by DisgruntledGoat

  Yesterday I had a problem with my dedicated server (Ubuntu 10.04, LAMP). It wasn't down per se, but running incredibly slowly as if we had a massive overload of visitors (though I don't think we did). It's running smoothly again now. I've been checking through log files etc to see if I can find any issues, the only strange thing is a bunch of these errors, occurring at about the same time as the downtime: [apc-warning] Unable to allocate memory for pool. in [file] on line 49. And a bit later on: [apc-warning] GC cache entry '[file1]' (dev=2056 ino=8988092) was on gc-list for 3601 seconds in [file2] on line 746. Could these errors indicate the cause of the server slowdown, or are they simply a result of the server being slow in the first place? What would be the solution?

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• Why do I get a GRUB error after deleting the Linux partition?

  - by nateify

  I had a dual-boot setup with Windows 7 and Windows Vista. I used Easus Partition Manager and shrank my Windows 7 partition. In the empty space, I installed Linux Mint. I decided I didn't want it anymore, I simply deleted the Linux Mint partition. Now when I boot, all I get is this: GRUB loading. error: no such partition grub rescue> I don't have my Windows 7 install disk because it was pre-installed.

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