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• is there any valid reason for users to request phpinfo()

  - by The Journeyman geek

  I'm working on writing a set of rules for fail2ban to make life a little more interesting for whoever is trying to bruteforce his way into my system. A good majority of the attempts tend to revolve around trying to get into phpinfo() via my webserver -as below GET //pma/config/config.inc.php?p=phpinfo(); HTTP/1.1 GET //admin/config/config.inc.php?p=phpinfo(); HTTP/1.1 GET //dbadmin/config/config.inc.php?p=phpinfo(); HTTP/1.1 GET //mysql/config/config.inc.php?p=phpinfo(); HTTP/1.1 I'm wondering if there's any valid reason for a user to attempt to access phpinfo() via apache, since if not, i can simply use that, or more specifically the regex GET //[^>]+=phpinfo\(\) as a filter to eliminate these attacks

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• linux + match only VALID IP from text file into other file

  - by yael

  please advice how to match only the valid IPs ( 255.255.255.255 ) from the file.txt and insert only the valid IP into VALID_IP.txt file ( see VALID_IP.txt for example ) the solution should be implemented in my ksh script ( so perl or sed or awk is fine also ) more file.txt e32)5.500.5.5*kjcdr ##@$1.1.1.1+++jmjh 1.1.1.1333 33331.1.1.1 @5.5.5.?????? ~3de.ede5.5.5.5 1.1.1.13444r54 192.9.30.174 &&^#%5.5.5.5 :5.5.5.5@%%^^&* :5.5.5.5: **22.22.22.22 172.78.0.1()*5.4.3.277 example of VALID_IP.txt file 1.1.1.1 192.9.30.174 5.5.5.5 5.5.5.5 5.5.5.5 22.22.22.22 172.78.0.1

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• Configure redis to not have everything in memory?

  - by acidzombie24

  I like redis because it lets me do operations on data structures. I wanted to see what would happen if i were to put more data into redis then i have for ram. So i wrote a loop that inserted 30k bytes repeatedly and set maxmemory 100MB. I figure it would stay at 100mb. It kept growing. Past 1gb then past 2gb. Suddenly it crashed because i ran the 32bit version. Now... i dont understand what the point of maxmemory is? I am using the windows version so maybe its ignored. Does redis have to have everything in memory? If i have a site (on linux) with a 10gb database and 512mb on the machine will redis work? I don't need it to be amazingly fast i just prefer to modify data in it then sql (although i hope it is still faster then mysql)

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• How does Amazon ec2-user get its sudo rights

  - by Johan

  I am looking for where the default Amazon AMI linux image sets up the privileges for the default ec2-user account. After logging in with this account I can use sudo successfully. Checking via the sudoers file, which I open by running visudo (with no other options) I see a few default settings and permissions for root ALL ALL So ... Where is the permissions for ec2-user assigned? I have not yet tried to add a new permission but ultimately I want to resign ec2-user for systems management tasks and use a non-full root user for administering the applications (stop and start mysql, httpd, edit apache's vhost files, and upload / edit web content under the web root)

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• Do I need to reserve space before installing Ubuntu alongside Windows 7?

  - by CRM Junkie

  I had Windows 7 32 bit on my existing system, but I am planning to install Ubuntu alongside it. So, I just decided to do a fresh installation of both the operating systems. When I insert the Windows 7 DVD, I can create 3 partitions at maximum, with one being the one where Windows 7 will be installed. I just wanted to know – do I need to keep some un-partitioned space for Ubuntu to install? By "unpartitioned space" I mean the space left after creating 3 partitions for Windows 7. I have a 500 GB HDD, so the three partitions I would be creating are 120 GB, 120 GB and 120 GB. The rest is shown as some logical drive, is that unpartitioned space? Can I install Ubuntu over there? I am pretty sure the space shown as logical won't be available as drives when I log into Windows 7. Is that space lost or can I use that to install ubuntu?

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• Sound leaks from speaker even when headphones are inserted

  - by instantsetsuna

  I've a Dell Optiplex 960 (which I presume has a speaker inside the tower). This speaker is normally in use whenever I play music (lets call this "tower speaker"), and when I insert my headphones in the 3.5mm jack (of the tower), the tower speaker stops and the music is played through the headphones (an obvious thing to happen). But sometimes, the tower speaker starts playing the music even when the headphones are inserted! So, the music is played through both of them! This gets quite embarrassing. So, my question is - Is there a way to turn off this "tower speaker"? EDIT : I'm using Windows XP

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• create symlink to another machine

  - by microchasm

  Hi, I have 2 machines. Both running CentOS. Box1 is webserver with apache, php. Box2 is mysql, and file storage. The files will only be accessible from Box1 within the webapp. I'd like to somehow create a symlink or somesuch on box1 to a folder on box2 where uploaded files can be stored and retrieved. Security in mind, what would be the best way to go about linking these 2 boxes up in a transparent (to apache) way? NB: the boxes are connected directly to each other via a crossover cable; no lan access to box2. Much thanks!

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• Context-specific remap

  - by dotancohen

  I have the following handy VIM map: inoremap ( ()<Left> However, sometimes I will enter Insert mode to add a function call around a variable, like so: Was: $sql = "SELECT * FROM " . $someTable; To: $sql = "SELECT * FROM " . mysql_real_escape_string($someTable); The mapping makes a redundant ) after mysql_real_escape_string(. Is there any way to refactor the mapping so that if there exists a character after the cursor, and the character after the cursor is not whitespace, then )<left> is not appended to (? Thanks.

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• Got root, now how should I configure my server?

  - by L. De Leo

  I've been a developer for years and by trade I had to know a little bit of server side configuration. But now I find myself needing to manage my own VPS instance (Amazon EC2) and I'm lost. I'd like to know what are the common ways to configure an Apache and MySQL server that is secure and efficient. For example right now I'm doing everything as root but I doubt that's the best way at all. My whole Apache is configured to serve 1 site when I'd like it to be able to serve multiple sites. Where do I start?

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• General purpose ticketing/tech support system [closed]

  - by crazybyte

  Possible Duplicate: What’s your favorite ticketing system? I was wondering if somebody could recommend me a very user friendly or simple general purpose ticketing/tech support system. I need something that is web based, preferably open-sourced/free software implemented using PHP, Ruby, Ruby on Rails or Java (as back end) with MySQL or PostgreSQL as database engine. I need something that is not development management oriented or project management oriented like Eventum or similar (random example), something to which the user can connect open a tech support request and be able to follow it until is solved or dropped.I need it to be open-sourced to be able to modify it if there is a need or extend it. I tried a number of such systems available and I found that osTicket or eTicket is something that it's close to what I need, but the code is somewhat flaky and some of the features are working badly or behaving strangely. Any thoughts/advice where to find something similar? Thanks!

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• How to generate good serials for DNS zones with Puppet?

  - by Bittrance

  My tradition is to set all zone serials to the timestamp at modification. Now that Puppet is my new religion, I want to set serial timestamps when building zone files from exported resources. A somewhat trivialized example may look like this: file { "/tmp/dafile": content = inline_template("<%= Time.now.to_i %>"), } The problem with this approach is that content will be different all the time, which will (ultimately) provoke rebuilding of zone files on each puppet config poll. Is there some way I can insert a timestamp without it being included in the data that is compared against previous state?

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• How to choose NoSQL database engine?

  - by Poma

  We have a database with following specs: 30k records, 7mb in size 20 inserts/second 1000 updates/second 1000 range selects/second, by secondary index, approx 10 rows each needs at least one secondary index needs some mechanism to expire keys if they are not updated for 75 secs (can be done via programmatic garbage collector but will require additional 'last_update' index and will add some load) consistency is not required durability is not required db should be stored in memory For now we use Redis, but it does not have secondary index and it's keys index:foo:* is too slow. Membase also does not have secondary index (as far as I know). MongoDB and MySQL memory engine have table-level locks. What engine will fit our use case?

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• freebsd dev server on virtualbox over windows

  - by g_kaya

  I need a unixy environment for development purposes. I hate doing things on windows but it is more stable for daily use and I don't have a mac, so I'm having to use windows (7). I want to run freebsd in a virtual machine, configure it to be the localhost server, be able to connect using ssh (within my home-network) and be able to install vbox guest addons. If guest additions aren't the best, I can use solaris or linux flavours. I need no gui. I don't know anything about network stuff, so I need a detailed explanation from vise people here, or a nice doc to read. Edit : To be more specific as requested, I use following on unices: *django 1.4 *apache *python (2.7) *emacs *mysql *probably node.js *bash scripting I use windows to be able to do daily things easily, like connecting to my tablet, browsing and learning java. And I don't want to use linux as my desktop os, beacuse it gets broken a lot, it's annoying to maintain wlan problems and some more.

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• perform command substitution in MS-DOS

  - by wiggin200

  I wonder how you can make in MS-DOS a command substitution Command substitution is a very powerful concept of the UNIX shell. It is used to insert the output of one command into a second command. E.g. with an assignment: $ today=$(date) # starts the "date" command, captures its output $ echo "$today" Mon Jul 26 13:16:02 MEST 2004 This can also be used with other commands besides assignments: $ echo "Today is $(date +%A), it's $(date +%H:%M)" Today is Monday, it's 13:21 This calls the date command two times, the first time to print the week-day, the second time for the current time. I need to know to do that in MS-DOS, (I already know that there is a way to perform something like that using as part of the for command, but this way is much more obfuscated and convoluted

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• Resize the /var directory in redhat enterprise edition 4

  - by Sri

  I am running NDB mysql. the log files fills up the /var directory. therefore i cant start the ndbd service now. as a temporary fix, i have deleted the log files and again working fine. but again the log files fill up the /var directory. i got plenty of space in other partition. therefore i would like to swap the partition from one directory to /var. here if my input from df -h Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-LogVol00 ext3 54G 2.9G 49G 6% / /dev/cciss/c0d0p1 ext3 99M 14M 81M 14% /boot none tmpfs 1013M 0 1013M 0% /dev/shm /dev/cciss/c0d0p2 ext3 9.7G 9.7G 0 100% /var there are plenty of space in /dev/mapper/VolGroup00-LogVol00. Therefore i will like to swap 10 G space from this directory to /var. could you please help me out to solve this problem?

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• How to move a partition to the end in gparted?

  - by matnagel

  I can't find a way to move the partition /dev/sdb2 to the end, where 12GB are free http://dl.dropbox.com/u/3358699/permanent/gparted-sdb.png I can resize (expand) the partition, but not create (insert) any free space in front of it. How to do the trick? (There are 2 small black arrows on the top of the popup window in the screenshot at the side of the blue box that represents the 400 GB sdb2 - I can only move the right arrow to the right, which extends the size, but I cannot move the left arrow. When I enter something in the free space preceding box it is always reset to zero by the programm immediateley) I hope I explained this well enough, please feel free to ask for details. This is serious for me as I am expanding a live image. Maybe there is another solution with linux commandline tools ?

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• Mediawiki create user error after migration

  - by ing0

  So I had a mediawiki installed on windows with MySQL (running on AWS RDS). I've since moved it to a debian server for various reasons, but I think I've messed up the database because of the different versions of mediawiki I have used. The windows install was v 1.20alpha (58f390e). The new debian install is v 1.15.5-2squeeze4. I've tried to update debian but it doesn't find an update, so is this the latest squeeze version? Everything seems to work ok except adding users. It gives me a database error so I ran php maintenance/update.php which ran some stuff OK but didn't make a difference. I think I've not done the correct approach to this sort of move, does anyone know of a better way of doing it? I still have the old wiki running - but not used - on windows (using the same database) so I could always try this again.

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• Upgrading phpmyadmin (and other packages) on Debian Squeeze

  - by westexasman

  I just setup a new VM with Debian Squeeze (latest stable release, 6.0.4). I am going for a webserver, so I installed the usual... apache, php5, mysql, phpmyadmin, etc. Everything went well, everything is working. My question is about upgrading packages. I noticed the phpmyadmin version is 3.3.7... the latest is 3.4.10.1. Doing apt-get update/upgrade does not upgrade the package. How does one go about upgrading packages on a Debian Squeeze server if apt-get update/upgrade does not work? Thanks!

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• PostgreSQL, update existing rows with pg_restore

  - by woky

  Hello. I need to sync two PostgreSQL databases (some tables from development db to production db) sometimes. So I came up with this script: [...] pg_dump -a -F tar -t table1 -t table2 -U user1 dbname1 | \ pg_restore -a -U user2 -d dbname2 [...] The problem is that this works just for newly added rows. When I edit non-PK column I get constraint error and row isn't updated. For each dumped row I need to check if it exists in destination database (by PK) and if so delete it before INSERT/COPY. Thanks for your advice. (Previously posted on stackoverflow.com, but IMHO this is better place for this question).

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• Accessing our Intranet from outside our Network - WITHOUT VPN

  - by westexasman

  We just upgraded our company intranet from an IIS based, ASP (poorly written) server/code base to a Windows Server 2008 r2 (Apache/MySQL/PHP) server. The old server allowed users to login to intranet.xxx.org using there AD user/pass which then lead them to the company Intranet from basically anywhere they had Internet access. We want to mimic that functionality (or change it to something more secure) with the new setup. This was seemingly setup for off-site employees running on a state network. The state network does not allow VPN, therefor, we needed a way to allow those employees access to the Intranet. So, how do we go about allowing users to login from the outside world and gain access to our Intranet?

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• Workstation Build: Single 2.66ghz i-7 with overclock potential, OR Dual 5520 2.26ghz Xeons?

  - by jdc0589

  There are probably better places to ask this, but I am used to the excellent quality of responses on stack overflow. I am rebuilding my desktop in a few months. Aside from normal lightweight internet usage, I use it to run sqlServer, mySql, 1-2 Ubuntu VMs from time to time, lots of IDE's, and a media server for my PS3. The two possible setups cost the exact same amount (within $50) and would both have 12gb 1333mhz ddr3 ram and a 500gb RAID-0 array (250x2). Now, If I go with a single i-7 920 2.66ghz quadcore, I can easily overclock it to 3ghz, and would have cash leftover to get a 160gb ssd (either the ocz vertex or the 120gb intel) for the main OS/Program install drive. Else, I could get a dual lga1366 motherboard with two e5520 Xeon's (2.26ghz),just use the disks I already have. So, do I go for 8 physical/16 virtual cores at 2.26ghz (No overclocking on server boards) with normal disk I/O, or a 4 physical/8 virtual cores at 3.0ghz with really outstanding disk I/O?

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• Problems with the backup

  - by marcodv

  I did a script which run around 4 o'clock in the morning, for backup all the mysql databases and the config file for 250 linux vm. The problem is that it tooks ages for complete and more than 50% of these vm, need more than 8 hours for complete. More or less all the vm had the same configuration,I mean Same amount of ram same amount of disk space same number of cpu Debian 6.0.5 I am saving these backup on amazon s3, because is the cheapest solutions that I've found. Now my questions is: Has anyone some solutions or suggestions about that? On one blog I've read that probably the ionice and nice combination could be good work around about that. any thought?

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• How can one implement RAID1 with a Dell Latitude laptop containing one normal hard drive, and one hard drive in an external bay?

  - by user12583188

  OS: Win7 professional Laptop: latitude e6420 The answer to this question should address how to deploy RAID1 software wise on a dell latitude e6420. I have two Hitachi Z5K500 320GB drives (new). There is one hard drive (320GB capacity) in the system now, which contains the current installation that I would prefer to keep. The drive currently inside the laptop will be replaced with one of the Hitachi drives, and the other Hitachi drive will be fitted into the laptop by way of a Dell hard drive "caddy" enclosure, which inserts into the media bay of the laptop (you remove the cd-rom bay, insert hd-bay).

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• New power supply, now computer doesn't recognise hard drive?

  - by Mike

  Ok, I bought a new power supply, because my old one was too damn loud. I hooked it up to my PC, turned it on, everything is looking fine, start up detects my DVD drive, 2 hard disks.. then I get the message "BOOT FAILURE INSERT SYSTEM DISK". Now I've seen some other people talk about going into BIOS and changing the start up to the HDD and not the CD.. well I've done that and it doesn't help. If I let windows load up and it asks me to which partition I wish to install windows, no partition is present. It's as if after the initial start up the drives arn't being found. I plugged my old (but loud) PSU back in, connected up all the cables, and it works perfectly. Why does the new PSU not detect my HDD's after the first BIOS screen start up? Any ideas? :)

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• Laptop held hostage by administrator domain and Bit locker

  - by user144780

  I have a laptop computer that I had when I was working at an IT company. I don´t work there anymore but I could keep the computer (Lenovo) Suddenly my wireless internet didn´t work anymore showing error "insert SIM into the mobile broadband device" and month later connectiong to internet with cable got disabled I don´t know the password to sign in as an administrator on domain and whatever I try to do/install/change settings... everything needs admin rights. To surf the internet again with the computer I tried to install a new Windows but it´s seems to be protected with Bit Locker, asking for recovery key. I´ve googled and googled bunch of CMD tricks but most of the shows "system error 5 has occured" Is there anyway to get the wireless internet to work, change the admin or install new Windows? - or should I rather enjoying throwing it of the balcony or set it one fire? :)

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