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• How can I let my users set PHP.ini settings for wordpress?

  - by jldugger

  I set up a wordpress server from a fairly standard Ubuntu 9.10 for a class and they're constantly running into problems with the default PHP.ini settings. First memory settings were too low, then the file upload limits were too small, etc. And more concerning was a wordpress wide blank page that I suspect was killed for ram consumption but turning on php errors in php.ini didn't reveal anything! I'm not familiar with shared hosting, but I feel there's a way such places allow users to edit such things without needing me to intervene and restart Apache.

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• Kill program after it outputs a given line, from a shell script

  - by Paul

  Background: I am writing a test script for a piece of computational biology software. The software I am testing can take days or even weeks to run, so it has a recover functionality built in, in the case of system crashes or power failures. I am trying to figure out how to test the recovery system. Specifically, I can't figure out a way to "crash" the program in a controlled manner. I was thinking of somehow timing a SIGKILL instruction to run after some amount of time. This is probably not ideal, as the test case isn't guaranteed to run the same speed every time (it runs in a shared environment), so comparing the logs to desired output would be difficult. This software DOES print a line for each section of analysis it completes. Question: I was wondering if there was a good/elegant way (in a shell script) to capture output from a program and then kill the program when a given line/# of lines is output by the program?

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• Why using swap file over a SMB/NFS mounted filesystem is not possible in Linux?

  - by Avio

  I'd like to use another machine's unused RAM as swapspace for my primary Linux installation. I was just curious about performance of network ramdisks compared to local (slow) mechanical hard disks. The swapfile is on a tmpfs mountpoint and is shared through samba. However, every time I try to issue: swapon /mnt/ramswap/swapfile I get: swapon: /mnt/ramswap/swapfile: swapon failed: Invalid argument and in dmesg I read: [ 9569.806483] swapon: swapfile has holes I've tried to allocate the swapfile with dd if=/dev/zero of=swapfile bs=1024 (but also =4096 and =1048576) and with truncate -s 2G (both followed by mkswap swapfile) but the result is always the same. In this post (dated back to 2002) someone says that using a swapfile over NFS/SMB is not possible in Linux. Is this statement still valid? And if yes, what is the reason of this choice and is there any workaround to have this working?

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• What is the best way to configure the number of workers in Apache?

  - by rbm

  My site receives a lot of traffic for 2 hours during the day (2000 hits per minute). The rest of the day receives less traffic(500e hits per minute). I have been experimenting with the MaxClients and MaxSpareServers values but I still get some downtime during peek hours. How can I calculate the best values for my configuration based on the amount of ram that I have ? Each process is like 36-40 M of Memory total used free shared buffers cached Mem: 3096 793 2302 0 0 0 -/+ buffers/cache: 793 2302 Swap: 0 0 0 Values that I am using now <IfModule prefork.c> StartServers 10 MinSpareServers 22 MaxSpareServers 60 ServerLimit 90 MaxClients 90 MaxRequestsPerChild 400 </IfModule>

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• building a home server with a nas appliance [closed]

  - by user51666

  Possible Duplicate: Best way to build home NAS with redundancy I was hoping to get some ideas from folks here. I'm interested in building a home web server with a nas appliance. It would be primarily used for storing pictures, video. I want a networked storage device so I can have multiple devices access it wirelessly as needed from within our home and also I want the option to access from outside the house using a login/pw access. I'm also interested in customizing, building my own web pages as well. Preferably apache. Any preferences? Does anyone have an interesting, neat set up they can share? Thanks!

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• Drobo Pro or SAN for backups

  - by PHLiGHT

  I have multiple offices and was thinking of using two Drobo Pros as a storage location for my backups, with one at each site being synced. It seems like on the surface its a cheap alternative to a SAN. Because it will just be used for storing backups I don't think that performance is as big of an issue. Related question. How do you sync your backups from your main location to a remote site. I am using Backup Exec and wondered if I should use a feature in the program or use something like Delta Copy.

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• Which permissions need to be assigned to a normal user to allow him to change SHARE permissions?

  - by guest

  As in the subject - I am wondering, which permissions (if it is possible) do I need to assign to a regular user to modify the share permissions - e.g. to add another user with full control permissions, or to deny someone read access to the folder - on a share level. I know that this is possible through NTFS permissions, but I am wondering whether it is also possible on share level. Any ideas how to do that? Or perhaps only the adminstrator/creator/person who shared the folder has the access to this? I am using win2003 Any ideas? Thanks

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• How to install Windows on a laptop with no CDROM drive?

  - by Jason Kester

  I have an old Thinkpad X60 that I'd like to wipe clean and rebuild. Seeing as this machine doesn't have an optical drive, what's the easiest way of installing Windows XP? I have an external USB hard drive available. Would it be possible to run the install from that instead? Otherwise, what options do I have? Edit: assuming we're using a USB mass storage device... Is there a BIOS setting that I would need to change, or will it configure itself automatically? Would the USB drive need to be configured in any special manner, or would simply having a copy of the Windows CD files in a directory there be sufficient? Since the first couple answers that came in were basically "yes", I guess I didn't phrase my question correctly. I'm asking for detailed instructions on how to do this, not just a sanity check that I'm headed in the right direction. Thanks!

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• Graphing/charting of CPU utilisation [on hold]

  - by Peter

  So nagios can be good at graphing particular resource utilisation or other metrics, but I'm looking for a tool that can output a chart or other graphical representation of how much CPU time/CPU utilisation /all/ services on a server are currently consuming. I think New Relic could probably achieve this to an extent, but I was wondering if there was a popular open source app used for this. In case I am explaining this in a bad way, my actual problem is that I have a shared server with suexec enabled (ie. httpd cgi running under multiple user accounts). I'd like to know which users are using the most CPU during periods of the day.

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• Homegroup libraries visible but can't be opened

  - by majocha

  I have 2 Windows 7 PCs in a home network. When I create a homegroup, the libraries I share are visible on the opposing machine but when I doubleclick them nothing happens - no error message, nothing at all. It is the same on both computers. The homegroup works to the extent that the printer I shared is visible and can print from the other computer. Only the libraries are inaccessible. What I tried and checked so far, without result: disabling firewall file and printer sharing, MS Networks client enabled in network properties deleting and recreating homegroup reset homegroup by deleting C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking unsharing and sharing again the libraries

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• Automatically make or update a copy real-time on another hard drive volume whenever files are saved to a particular folder

  - by mrblint

  Whenever I save or update a file to a particular designated folder on my C:\drive I would like to make or update a copy on my network-attached storage device, ideally saving the copy to the NAS as a version rather than overwriting a copy there, if possible. I have Windows 7 x64 Ultimate. Is there any feature built-in that can accomplish this? It has to be a real copy, not merely a pointer. I'm trying to achieve some redundancy for especially critical documents (in a variety of formats) that change frequently throughout the day. P.S. I am looking for folder-level granularity; I wouldn't want this to happen for every file on the C: volume.

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• Moving software RAID to Linux

  - by terman

  I'm using a RAID 1 (mirrored pair) configuration in my Media Center/ NAS system. Currently it's running Windows 8 (yeah, big mistake I know) and I'm regretting it (did it for the games, not worth it). Currently I'm having two software RAID 1s (3TB + 2TB) configured with Storage Spaces and unfortunately formatted with NTFS. Now I would like to switch to Fedora (or maybe Ubuntu if there are advantages) for good. Is there a way that I could continue using the disks as they are without the need to format them with ext or something? I'm glad for every tip. Oh, the system disk is of cause not in a raid configuration.

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• Using the same local folder for Dropbox and Skydrive

  - by roryok

  Ever since I switched to windows phone I've sorely missed having an official dropbox app. Recently I've toyed with the idea of moving all my crucial files to SkyDrive instead. I have more storage on SkyDrive and the WP SkyDrive integration is very handy. I'm thinking about having both cloud sync services point to the same local folder for the first few weeks. That way if I want to go back its an easy task (and I can keep using dropbox's superior public folder) Has anyone else done this? Are there any potential issues (permissions, conflicts etc)

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• Additional Hard Drives for Servers

  - by Abs

  Hello all, I am developing a web app where I will have to save lots of files and I am just trying to work out the directory structure and where things should be saved to. I have had a look at the dedicated server I want to buy and for storage it shows this: 2x 1TB SATA in RAID1 The space is enough but I am guessing this will not be on one hard drive? I will have to save files on one hard drive and when that fills up, I have to use the other? For the Fedora distro - what is the path for the second drive? Is there a primary drive where I will be able to setup my webroot? I am sorry, this is all new to me. It would be great to links and advice on how things actually work when it comes to additional hard drives etc. Thanks all

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• Raid-3 like software backup tool

  - by Chronial

  I have a lot of data (about 7 TB), stored across multiple hard-drives with varying sizes. I would like to have a backup of that data to be safe against drive failure. A RAID is not a good option for me, as I want to keep my cost low and be able to easily extend the storage capacity of my setup by buying an additional HD. I remember seeing a piece of software that generates parity data over all drives and stores that on an extra drive. That solution protects the setup from hard drive failure and works with varying drive sizes (as long as the parity drive is the biggest one). But I can’t seem to find that software again. Does anybody now what I’m talking about or have any other solution for my situation?

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• Serve PHP page in web root but show contents in subdirectories

  - by David

  I have a web site on a shared hosting server. My directory layout looks like this /home /user /public_html /pics /family There is an index.php file in public_html. I need help writing .htaccess rules that will Serve the index.php file when www.domain.org is requested Force the user back to public_html when www.domain.org/pics is requested Allow the user to see the directory contents when www.domain.org/pics/family is requested I experimented with a lot of combinations of RewriteCond and RewriteRule, but I don't understand the documentation and examples well enough to know if what I want to do is even possible. The web server application is some version of Apache.

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• Override some DNS records and delegate others to another nameserver

  - by Addev

  I'm starting playing with nameservers. Currently I have: A domain: mydomain.com Access for writing the whois ns records. Access for writing DNS records at the domain hosting provider. nsX.foo.com A shared (hostC) hosting which cPanel writes in the nameserver of nsX.bar.com Basically I want the following structure: hostA.mydomain.com -> hostA hostB.mydomain.com -> hostB hostC.mydomain.com -> hostC mydomain.com -> hostC *.mydomain.com -> hostC Whats the correct way of configuring this? By the way I have configured the following records hostA.mydomain.com IN A [IP_OF_hostA] (at foo.com nameservers) hostB.mydomain.com IN A [IP_OF_hostB] (at foo.com nameserver) But now I dont know how to specify that @.mydomain.com and *.mydomain.com are resolved by the ns1.bar.com and ns2.bar.com, and it is hard to try with the delays after editing the records.

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• how to copy photos in ipad to my pc?

  - by davidshen84

  hi, i used the iTune to sync my photos to my ipad. but now, i lost the copies of the photos on my pc, so i want to restore them back from my ipad. but from the storage folder that ipad exposed, i cannot find my photos. and i am not sure if the photo sync function in iTune can sync the photos on my ipad to my pc, because it seems it can only sync stuffs from pc to ipad. i am not sure if jail break the ipad can help me.

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• Gnome+NX clipboard behavior; auto-copy on select?

  - by threecheeseopera

  I am having issues with the Gnome(/Linux/Debian+Ubuntu) clipboard when connected remotely; it's default behavior appears to be to automatically add text to a clipboard buffer when that text is selected. This is not usually a problem, until I need to log into one of these systems remotely (w/ GUI), and attempt to use a shared clipboard. If I 'copy' text on the local machine (destined to replace some text on the remote machine), that copy buffer is overwritten as soon as I select the text on the remote machine to be replaced. Is there some way around this? It sort of drives me nuts. Thanks! UPDATE: This is really an NX server issue; X11 supports multiple clipboards ("selections": clipboard, primary. secondary; see this excellent article) that behave differently, and it appears that my problem is related to how NX server translates this over to the host machine.

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• Build Advise for Home Web/NAS Server with Ubuntu Server 12.04 [closed]

  - by razor7

  I need to have a personal Webserver with NAS capabilities. The Webserver to test some LAMP projects I develop for clients, and also NAS to be able to stream media to local network. I want to have full control of the box, so I'm planning to build it with some spare parts and Ubuntu Server. The services/software that will run are (remember, is for personal and testing use only): SAMBA/CIFS SSH Server Apache 2 MySQL 5 Mercurial Repo PHP 5.3 Ruby on Rails OwnCloud Dovecot Webmin Postfix PureFTPd ClamAV The Hardware: Intel Dual Core E2180 2.0 GHz MSI P35 Neo Kinkston 1GB DDR2, 667 MSI Nvidia 7300le PCIe x16 256mb RAM HDD SATA WD Green 2TB x2 (RAID-1 with MDADM RAID Controller) 16 GB USB Pendrive (For server system installation) My idea is to build this system, using the pendrive for the Ubuntu Server software, and packages, and the RAID-1 for gross data storage. What do you think? Thanks a lot!

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• time on files differ by 1 sec. FAIL Robocopy sync

  - by csmba

  I am trying to use Robocopy to sync (/IMG) a folder on my PC and a shared network drive. The problem is that the file attributes differ by 1 sec on both locations (creation,modified and access). So every time I run robocopy, it syncs the file again... BTW, problem is the same if I delete the target file and robocopy it from new... still, new file has 1 sec different properties. Env Details: Source: Win 7 64 bit Target: WD My Book World Edition NAS 1TB which takes its time from online NTP pool.ntp.org (I don't know if file system is FAT or not)

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• Windows server 2003SP2 as LDAP replica master for Mac OSX 10.6

  - by FrancoR

  Hello there, we have a single domain controller with Windows 2003 with few child. All the users are in the main DC. We have already created a connection from AD to Mac Xserve 10.6 and can read all the users, but: 1. If the DC goes down (or the net), Mac lose all the users, so no file access, no emails, no nothing. 2. the users are in read only. Mac admin cannot reset password, change attribute and so on. What we need is a stable environment where both AD admins and LDAP admins can manage the users; if one server goes offline the users of the other server should work (email, shared folders) just fine. Thanks in advance P.S. we already tried to connect the MacOSX to Windows LDAP, instead of AD, but we're unable to do it: MacOSX requires DNS IP (gotcha), user admin and password (ok) and a root LDAP password we're unable to find any reference of it in Windows 2003.

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• Does /boot safe on top of a lvm LV (logical volume)?

  - by fantoman

  Title already asked the question. More specifically, I read in some documents that logical volumes are nice in general but not for /boot in a linux system. They say that bootloaders don't understand LVM volumes, so create a separate partition for /boot out of lvm. I recently installed Ubuntu server (9.10) for my home server, but by default /boot is created in the LVM. Everything is fine now, but I am not sure it is safe to use /boot in LVM. Second question is do I really need a physical partition (volume)(pv) for /boot or is it equally fine if I put it into a logical volume (lv) on top of a single shared volume group. Thanks in advance.

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• Suggestions for hosted file sharing services

  - by Jon

  Before I pose my question, I will give some insight as per my scenario: I work for a small business (cost is an important factor) Our bandwidth is limited and would not support an in-house FTP server We need to share files (mostly pdf, inDesign, Illustrator documents) to our clients, and as we expand, we are finding that our current locally-hosted FTP solution is too slow and is becoming a detriment to our sales team. What we need is a remotely hosted solution to share files with our clients, specifically with the following features: Greater than 100gb of secure storage The Ability to distribute unique log in credentials to clients, granting access to a personalized directory or folder, while limiting access to other files on the server. A relatively simple web-based UI for clients with limited computer knowledge We have considered a dedicated remote server, and web-based services (box.net, yousendit.com, onehub.com, filesanywhere.com) but I am unsure as per the direction we should be taking - have I left another solution out? What would you suggest? Thanks in advance.

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• How to point subdomain to a nameserver?

  - by vonconrad

  I've got an old crusty WHM/cPanel server which I'm trying to get rid of. I've got a new setup on shared hosting which is much cheaper in the long run. The problem is that there are a bunch of websites on the server whose domains I don't have access to. They're currently pointing to name servers of my domain (ns.mydomain.com), but the new provider has their own name servers (ns.provider.com) which I have to use instead. My initial idea was to set up a CNAME to point my name server to my provider's: ns.mydomain.com CNAME ns.provider.com, but I read in this question that this would be a bad idea. The accepted answer suggests using an A record instead, and I want to make sure how this would work. Assuming ns.provider.com has an IP address of 123.123.123.123, is it just a matter of doing ns.mydomain.com A 123.123.123.123? Is there any way the provider could block those requests as the name server domain technically doesn't belong to them?

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