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• Unix / linux permissions setup for shared hosting with Apache

  - by weiyin

  I'm in the process of setting up a server from a clean CentOS 5 install. What is the best permission structure (users, groups, unix permissions) for running a single instance of apache for multiple users? Ideally, it should satisfy these requirements: Each user's websites are stored in a subdirectory of their home directory. Users can edit files and permissions. Apache can read the websites of all users. No user can read the website files of other users. Bonus question: how to add PHP and/or Perl and/or Ruby to Apache without allowing any users to access any other user's files?

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• How to fix a Corrupted USB

  - by Help

  My USB stick has suddenly stopped working. It's a Busbi 4GB. My USB used to be G:/ but as soon as I plugged it in, I used to get a pop up box showing that it was plugged in. Now, when I plug this in, it shows as I:/ and no pop up box appears. It shows in my computer as I:/ and when I click to open it says I:/ is not accessible the disk structure is corrupted and unreadable. I have tried to change the file name back to G:/ but nothing happened (this was under disk management). On disk management, it shows Volume as I:/ Layout simple Type Basic File system RAW status Healthy (Active,Primary partition) Capacity 3.42GB. I've tried right clicking properties then the tab tools and click error checking (this option will check the volume for errors). When I click "check now" it comes up with the disk check could not be performed because Windows cannot access the disk.

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• Virtual Sd-card won't transfer [migrated]

  - by Hyztname

  I have a Verizon Galaxy Nexus 32GB. I've installed AOKP on it and it has been running pretty okay with no bugs etc... But after I connected it too my Nintendo Wii I think it mounted sdcard as FAT32 itself :\ I'm receiving the following error when trying to download something from 4Shared sync app(But actually none can download or transfer anything to Virtual sdcard): XXXXX.apk: open failed: EACCES(Permission denied) I already restored my old backup wiped all data etc, nothing seems to work. Note that I can access my sd-card, i can't only transfer, take pics... basically data. PS: I showed 4sync problem because it was the only one that specify something

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• Proxy server modifying request/response upon pass through

  - by jamiei

  I would like to set up a non-transparent proxy server that will selectively modify HTTP requests and responses as it passes them through. The motivation for wanting to modify the data on the fly and not at the original source are not part of the question. I'm hoping there is a solution which allows the modification scripts to be written in a mainstream programming language. I am aware of guides for Squid which allow you to flip images etc on the way through but I was hoping for a slightly more established and less hackish solution. Does anyone know of an established open source project or environment (Any major platform) which would allow me to script in arbitrary modifications to the data being passed through?

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• Sync local files to S3 similar to Robocopy

  - by Yuck

  I am looking for a way to synchronize an entire local folder structure to Amazon S3, similar to how one might synchronize two folders using Robocopy. Whatever solution I come up with needs to be scheduled to run periodically from the Windows Task Scheduler. So anything that requires a GUI to perform the synchronization is not a viable solution. Standalone Windows .EXE command line utility for Amazon S3 & EC2 looked promising, but seems to have been abandoned and would not work when I tried to use it. Possibly a difference in the way that security is handled now compared to that software's most recent release.

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• Can I convert my database/script to UTF-8 ?

  - by Mohannad Otaibi

  How can I convert a database to support UTF-8 and convert it's old data from what ever encoding they're in to UTF-8 ? Extra Info: I'm running a server which has many websites on it, and one of them is running WHMCS (php script to manage hosting clients). WHMCS has an iPhone application where i can browse it through iPhone, the problem is that this application will only run if everything in my website is in UTF-8 encoding. I was using windows-1256 as encoding in my script's settings, and i tried changing that in some point of time to UTF-8 for a while then changed it back to windows-1256 so, the data in the database are some inserted using UTF standards and most of them are windows-1256 If someone could clear the picture for me, Do I need to convert every database on the server or just one DB ? what should I change? If i had to do that manually, I'll do it but I need some expert advise.

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• Only show changed files with verbose option

  - by qox

  I would like rsync to print modified and deleted files. The verbose option (-v) does print modified files but also the list of subdirectories, maybe because touched directories are considered modified. Since I sync a lot of files from a lot of subdirectories, it's impossible to see the actual changes. So, is there a way to not print directories using rsync ? Im not looking for grep -v "*/$" kind of answers since it would also exclude new directories. Command I am using: rsync -avh --delete /media/data/src /media/data/bkp And everytime it prints the list of all directories: src/dir1/ src/dir1/sdir1/ src/dir1/sdir2/ src/dir2/ ..... Thanks for your help.

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• How do you create a report in Word (or other documentation software) that is linked directly with Ex

  - by NoCatharsis

  I believe my question may be best answered by using Access since that's more what it's made for. However, I don't have a license for Access here at work and trying to get one is pulling teeth. So I'm curious if there is any way to compile reports with data in an Excel 2007 sheet. The output can be .doc, .docx, .pdf - or anything else if there's a decent piece of free 3rd party software. This might be easiest solved by just creating another sheet in the same workbook and directly linking to the data I want to display in a report-esque format. But I wanted to see if SU could offer some more creative solutions.

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• Determining percentage of students between certain grades

  - by dunc

  I have an Excel spreadsheet with the following data: #-----------------------------------------------------------------------------------------------------------------------------------# # Student # KS2 Grade # Target # Expected 1 # Expected 2 # Expected 3 # FSM Status # Gifted & Talented # #-----------------------------------------------------------------------------------------------------------------------------------# # User 1 # 4 # 6 # 7 # 5 # 6 # Y # N # # User 2 # 3 # 5 # 5 # 4 # 4 # N # N # # User 3 # 5 # 6 # 6 # 6 # 7 # N # N # # User 4 # 4 # 6 # 5 # 6 # 6 # N # Y # # User 5 # 5 # 7 # 7 # 6 # 7 # N # N # # User 6 # 3 # 4 # 4 # 4 # 4 # N # N # # User 7 # 3 # 4 # 5 # 3 # 4 # Y # Y # #-----------------------------------------------------------------------------------------------------------------------------------# What I'd like to do is determine the percentage of students with certain levels, i.e. a range of levels. For instance, in the data above, I'd like to determine the % of all students that have a Target level of 5 - 7. I'd then like to also expand the formula to specify % of Gifted & Talented students with a Target level of 5 - 7. Is this possible in Excel? If so, where do I start?

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• htaccess with wildcard SSL

  - by Ericko

  We have a Wildcard SSL Certificate that is supposed to work on any subdomain of a given domain. So in this server we have this file structure: /home/DOMAIN/public_html/subdomainx /home/DOMAIN/public_html/subdomainy etc... Now, the Certificate is installed, but when you visit any subdomain over https (example: hxxps://subdomainx.domain.com ) it points to /home/DOMAIN/public_html/index.php We need that when you visit a subdomain via https hxxps://subdomainx.domain.com That it points to the the same directory that it's http equivalent: /home/DOMAIN/public_html/subdomainx Our provider tells us that this is not possible, that the current behaviour is correct, and that to achieve this we need to do it with htaccess. I've tried a few things, incluiding this solution, that seems to be what I need: http://stackoverflow.com/questions/5365612/advice-on-configuring-htaccess-file-to-redirect-http-subdomain-to-https-equival But can't get it to work. Any tips? Thanks. Added: The server is Apache.

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• Everything You Ever Wanted to Know about Mod_Rewrite Rules but Were Afraid to Ask?

  - by Kyle Brandt

  How can I become an expert at writing mod_rewrite rules? What is the fundamental format and structure of mod_rewrite rules? What form/flavor of regular expressions do I need to have a solid grasp of? What are the most common mistakes/pitfalls when writing rewrite rules? What is a good method for testing and verifying mod_rewrite rules? Are there SEO or performance implications of mod_rewrite rules I should be aware of? Are there common situations where mod_rewrite might seem like the right tool for the job but isn't? What are some common examples?

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• LVM incorrectly reported missing after power failure

  - by mensi

  We have had a major power failure in the data-center. We are using a set of servers for our storage needs. The main server has several pairs of disks mirrored with mdadm. The resulting /dev/mdX are LVM physical volumes and belong to a big volume-group with all our data. After the powerloss, we had the problem that one of the mdadm devices was not auto-detected due to a missing entry in mdadm.conf. As a consequence, the volumegroup had inactive logical volumes due to the missing PV. We were able to fix the mdadm config and reboot. pvscan shows all expected PVs but one LV still does not come up. vgdisplay shows: [...] Cur PV: 3 Act PV: 2 [...] Neither vgscan nor pvscan show any missing devices. What went wrong? How can we force LVM to activate all PVs?

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• Windows 8 Task Manager RAM Usage Accuracy

  - by user264892

  The new Task Manager has a great UI in windows 8, however, there are some discrepancies in the data I can not account for: Machine: 8 GB of total ram. (This is a physical machine, not a virtual) The processes tab shows 45% of Memory utilized. The listed process do not add up to 3.5 GB of RAM, but instead add up to 0.948 GB. There is no "processes for all users" option. The performance Tab Shows: In use : 3.6 GB Available: 4.4 GB Committed : 4.1 /9.2 GB Cached: 3.7 GB Paged Pool: 376 MB Non-paged pool: 135 MB My reading of this says I have ALOT of "cloaked" processes running some where eating my ram. How do I interpret this data and how do I verify it?

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• IIS6 host multiple websites under same sub-domain (or something similar)

  - by Sigurbjörn

  Hi there! I'm trying to figure out a structure for a hosted application that i'm working on. I've got a domain lets call it app.company.com (a sub-domain company.com of course) that is setup to redirect to my IIS 6 web server. I would like to set up one website in IIS for each client that will use this application. And have the URL schema be like this: app.company.com/clientA -- would point to ClientA website in IIS app.company.com/clientB -- would point to ClientB website in IIS Do you guys have any pointers or best practices for my scenario?

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• How to set up server to be accessed from mobile devices [closed]

  - by Kgrover

  I need to set up a server that will eventually be accessed from an Android application. I don't have experience with how to go about this, but I've seen MySQL servers (Amazon EC2). I would need to store data on the server remotely (again, from a mobile device) and fetch it to display. What would be the best kind of server to use? I'm guessing I would only need around 50 GB of space. Is it possible to use a network drive and set that up as a remote server with an IP address? I would need to upload and extract data through java on Android. This is my first question on ServerFault, and I'm not sure if it's the appropriate forum. If not, please redirect me.

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• I have a bunch of CHK files on my USB Drive that used to be my stories that I saved on there. How do I get them back?

  - by Susana

  Ok, so I am not sure why, but my USB flash drive isn't showing all of my stories that I typed and saved. It might be because I removed the USB flash drive without ejecting it safely. All of the data was there on my flash drive, I just couldn't see it. The capacity was almost full so I'm pretty sure the data was there. So, when I decided to run and check to see if there were any problems, the computer found that there were. I think it found my files, but now they are CHK files and I don't know how to get them back. Can someone please help? This is my life's work here!

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• Why my backup to USB Drive is too slow?

  - by Jonas

  I have tried several backup solutions for my data and none of them was good enough. I basically want to make a copy of my files to an attached USB Drive from time to time. I don't mind starting my backups manually, since the USB Drive is not always connected. My problem is that my data contains a lot of files (a huge amount), so backing up takes forever (more than 20 hours). Using "rsync" an other similar solutions is not working because the I/O needed to check the file for changes takes longer than the time to actually copy it. Any suggestions?

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• CentOS I/O blocking flushing dirtypages

  - by user3662224

  I have an Apache webserver on CentOS. It is not doing anything fantastic or complicated at all but it does at intervals experience a high load (120 for 4 CPUs) for some reason. During this time I see high waits and write durations. I have narrowed this down to flushing of dirtypages to disk to make room for new data. I have tried many things and talked to the developers who are also puzzled by this. I am stumped. Details: vmware virtual guest server 4 cpus 12G RAM Apache PHP I have 40 servers in this cluster that share the same disk structure. Only the webservers are experiencing this issue. Any ideas?

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• Missed something? Cant upload files to server (permissions)

  - by Camran

  I can upload files as "root" to the Ubuntu server. Then I created a user (me). Next I added the user to the group www-data. Then assigned rwx permissions to www-data. Next, when I try to upload, delete or modify files VIA FILEZILLA, I cant. But via the terminal, I can change files using sudo command. What should I do to be able to upload files without getting the "permission denied" in filezilla? If you need more input let me know. Thanks

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• How to synchronize between differently structured directories using rsync (or other program)

  - by doetoe

  Does anyone of you know how to perform the following task: Suppose you have two directory trees, which I will call source and target. They may have a very different structure, but could contain many duplicate files. An example would be a structured collection of photographs on one hand (the destination), and just a tmp directory in which you unload everything from your camera on the other (the source). Maybe some of these files are already in the structured directory tree. I would like to rsync from the source to the target, such that only the files from the source that are not in the destination at any location are copied.

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• Scaling web application with SQL Server 2008 database

  - by John

  I have a database which has 90% of read only tables. 10% of the tables has writable data. We need to scale the ASP.NET application.We need to add more users who will not be writing to the database. We are thinking of adding another server and routing the users who need read only access to that server. Is there a way to replicate just some tables to another database server. Since the 90% of data doesnt change, we don't want to setup any full database replication. Please advise.

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• Who should own /var/www? [closed]

  - by John

  Possible Duplicate: How should I structure my users/groups/permissions for a web server? I've seen a few answers to this on the internet, but I'm looking for a definitive answer. I have a new Ubuntu 12.04 LTS server with LAMP. Apache is set to run as "www-data" and /var/www is set as having "root" as the owner and "root" as the group. The permissions for /var/www are "drwxr-xr-x" which I believe translates to 755 numerically. I know that /var/www should not be owned by "www-data" because then buggy/malicious code could have a field day. However, should I keep it as root:root (inconvenient) or should I change it to ubuntu:ubuntu, the default user that Ubuntu preconfigures for you to log in with? Should the permissions remain at 755? I've been administrating systems for a while with no big security issues, but I'm trying to get really serious about security, double-check everything, and make sure that there are no gaps in my knowledge.

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• New 2.5" hard drive for laptop - What to compare?

  - by TFM

  I'm having trouble finding a new (bigger) hard drive for my laptop. I came across some criteria that I never thought about before, while I was checking a price comparison site. Of course, that made me more confused. First of all, I will probably go with something above 250 GB, and at least 16 MB cache. Now the confusing part: Most new drives are 7200 RPM, as opposed to good old 5400 RPM. 7200 RPM used to mean extra heat, but suddenly it's almost impossible to find a 5400 RPM in 2.5". What did I miss? Second question: Internal data transfer rate. My old drive has a rate of around 60 MB, but new drives have values like 100 MB or more (e.g. 150 MB). How important is this "internal data transfer rate"?

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• vSphere 4 - how can I cancel a file copy in progress?

  - by DrStalker

  VMware vSphere 4 SAN storage with multiple data-stores No vCenter I shut-down a virtual machine and using the data-store browser did a copy/paste to copy the VM to a new datastore with additional space. The file copy performance was very poor, and due to time constraints I decided to cancel the copy task. However the copy task showing in the vsphere client can not be cancelled; the cancel option is disabled. Currently I am not able to start the machine in it's original location as the disk files are locked for the copy. How can I abort the copy? I tried deleting the target directory but this did not abort the copy task.

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• Move files contained in a certain dir to the previous one (centOS)

  - by Alex

  i will try to explain my problem (sorry for my bad english). I have an image gallery with a directory structure like that: images/dir1/subdir1/IMG/files.jpg images/dir1/subdir2/IMG/files.jpg images/dir1/subdir3/IMG/files.jpg images/dir2/subdir1/IMG/files.jpg ....... images/dir109/subdir1/IMG/files.jpg the directory named images contains 109 dirs (dir1,dir2, ... dir109), the 109 dirs totally have 1200 subdirs inside, every subdir contain a dir named IMG with images into it (file1.jpg file2.jpg etc ...), i would like to move all the images contained into every dir named IMG into the previous dir (subdir) to have something like that: images/dir1/subdir1/file1.jpg images/dir1/subdir1/file2.jpg images/dir1/subdir2/file1.jpg ........ images/dir109/subdir1/file.jpg

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