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• remove files in unix

  - by nikhil

  Hi all, I often face this problem. I have a set of files in a folder and would like to delete all of them except a few. for example..if i have files named according to the date of creation(like 11-1-11.tar, 10-1-11.tar and so on). Now i would like to delete files like 10-1-11, 9-1-11 and so on but not some other files. Basically i would like to enforce what all should be deleted and what should be retained. How would i do this?

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• How do I get a new column from a Sharepoint list into Excel?

  - by Jono

  I've been using Excel to process data from a Sharepoint list for a while now. However, I recently added a column to the Sharepoint table, and when I refresh the data in Excel, I don't get the new column. I perform a lot of calculations based on this data, so creating a new worksheet with the "new" Sharepoint list, moving the calculations and the pivots to THAT sheet is more hassle than I'd like to face. Is there a way to force Excel to display this new column that I've added? Maybe by modifying the connection string?

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• Update the remote of a git branch after name changing

  - by Dror

  Consider the following situation. A remote repository has two branches master and b1. In addition it has two clones repo1 and repo2 and both have b1 checked out. At some point, in repo1 the name of b1 was changed. As far as I can tell, the following is the right procedure to change the name of b1: $ git branch b1 b2 # changes the name of b1 to b2 $ git push remote :b1 # delete b1 remotely $ git push --set-upstream origin b2 # create b2 remotely and direct the local branch to track the remote 1 Now, afterwards, in repo2 I face a problem. git pull doesn't pull the changes from the branch (which is now called remotely b2). The error returned is: Your configuration specifies to merge with the ref 'b1' from the remote, but no such ref was fetched. What is the right way to do this? Both the renaming part and the updating in other clones?

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• Google Chrome gets really slow on 10+ open tabs

  - by Anton

  For some time already I face a problem with Google Chrome. I really love this browser, but on Windows 7 on a pretty decent machine (i5, 4GB RAM) it gets REALLY slow when I open for instance 10 techcrunch.com pages. Once I do that it becomes virtually difficult to scroll through pages and the general responsiveness of the browser gets down. And if I open 20+ or 30+ tabs there is a good chance all of them will crash. Does anyone got an idea? This happens to me on several PCs with Windows 7 64bit. At 10 tabs there is 600-700MB memory used by Chrome. Two systems have the issue are both laptops with integrated graphics. One by Intel, the other an nVidia GeForce 310M.

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• Preventing my postfix to send my local users spam

  - by Jack

  I have a postfix/dovecot mail server with 100 different users. When they send an email they need to be authenticated. I successfully use saslauth to achieve this. Few days ago I had a problem. One specific user, probably with a virus or a spam-bot installed in its computer, started to send out through my server thousands of emails in few hours. As result, my ip has been blocked by many isp provider (@aol, @yahoo, and others) and has been listed in many blacklist, making all my 100 users unable to send any email to anyone. What is the best practice to avoid this problem? It would be great if my server could recognize a spamming user and automatically block it. Also, have a limit of, say, 30 emails per hour could be a partial solution. Any idea how to face this problem? Thank you

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• Image archiving on network folders.

  - by Steve

  Our company uses Symantec Enterprise Vault to archive network folders and files, presumably to save on disk space. I can't see any other benefits. Our company is an architectural firm, and the problem our users face is locating particular images in network folders. Because all the files are archived, Windows Explorer is unable to generate image thumbnails. Each image needs to be individually restored from archive by double-click before it can be viewed. This is a big time-waster for our architects. Symantec say there is no workaround for this. Does anyone know of an alternative we could use for archiving images? Alternatively, some batch utility to create and maintain a thumbs.db file in each folder? Thanks.

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• How to clear the REPLACEBATT state from APC UPS after hot-swapping the battery

  - by Hubert Kario

  I replaced a battery in APC SmartUPS by hot-swapping. While the swap was all right and didn't disturb connected computers, the "Battery failed" LED on the front face kept glowing. I tried to use apctest from apcups package. Turned off the daemon and run self test (first changing BATTDATE in EEPROM). The test run fine but didn't clear the REPLACEBATT status or the glowing LED. How to clear the failed battery state without powering the UPS and connected equipment down?

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• "save the changes" message after removing the protection from workbook Excel 2010

  - by abbasi

  Some time ago I protected the Excel 2010 file from the path File Protect workbook Encrypt with password and gave it a password. Now that I removed that password via below method: Open the workbook and use Save As In the lower right of the file window will be "Tools" Choose "General Options" Clear the password. Save over your old file. the file is openable without wanting a password. But the problem is when I open it and close it immediately, even without moving the active cell, the message "Do you want to save the changes you made to 'test.lsx'?" appears. While there hasn't occurred any changes to that file so why I face this message any time I want to close the file? Hasn't the file been corrupted?

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• I want to deploy my php based web application with apache-ant. How can I do that?

  - by codeperl

  I googled it. But unfortunately did not get the specific answer. I am a fan of command line and typing. So now, I want to deploy my php based web application with apache-ant. How can I do that? Also I want to practice these deployment in my local pc. Is it possible? Phing is there and what i heard phing works on the top of apache-ant for php application deployment. But I want to face the hassel and want to write in my own hand.

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• Samba file shares - ownership of folder accessible for 1 group verified by MS active direcctory

  - by jackweirdy

  I have a machine set up to share a folder /srv/sambashare, here's an exerpt of the config file: [share] path = /srv/sambashare writable = yes The permissions of that folder are set at 700 and it is owned by nobody:nogroup at the moment. The problem I face is probably a simple one but I'm fairly new to Samba so I'm not sure what to do. The contents of the share should be accessible to a particular user who will authenticate with domain credentials, checked against Active Directory by kerberos. I haven't got kerberos configured yet as I wanted to test the share as soon as samba was configured, albeit basically, to ensure that it works. I've noticed that I can only access & write to the share when the folder is either owned by the user logging in or made world writable. The key issues are that this folder can't be world writable as it contains sensitive stuff, but at the same time can't be owned by a user or group since they come from the AD server. Anyone know what I should do?

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• Vim: What do these short names / verbs like <leader>, <C-r> mean?

  - by Ambidex

  I'm using Vim for a while now, starting to like it more and more. But when searching for some new features that Vim has in it's goodie bag, I'm often slapped in the face with things like <Leader> <C-r>, etc... I'm feeling really stupid for not being able to relate these to keys, commands, or what soever they should mean. I've also been searching multiple times for the use of these verbs, but I think I'm not using the correct search queries to get to the right explanation pages. Could someone give me a push in the right direction or maybe summarize the meaning / workings of these verbs? I thank you in advance!

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• How to configure Linux to act as a Bluetooth RFCOMM SPP server?

  - by regulatre

  I'm writing a phone app for Android that connects to a bluetooth RFCOMM device in my car. My phone app talks AT commands with it. For development work, I often need to communicate with the device to try different commands and things. My neighbors are starting to think I'm weird because I sit in my car for hours on end with my laptop screen shining on my face, typing away like a script kiddie. I'd much rather configure one of my many Linux servers to act as a bluetooth RFCOMM device and allow me to connect to it (indoors, while I sit on my couch). I imagine I have to start with something like sdptool add SP But then what? I'm perfectly happy writing a perl app to handle the I/O, but I just don't know how to make the bluez stack accept connections and subsequently pipe that stream to a perl app.

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• How to backup mirror copies of C: drive?

  - by metal gear solid

  I've installed everything on my C: Drive . Whatever i need Windows 7, updated drivers and utilities and software etc i need. I now i want to take a backup mirror of everything in a DVD or i can keep backup in another USB HDD. so in case if i face any windows or hard-drive failure in future then i can restore everything as it is as all are today. I don't want to reinstall everything again Windows, Drivers all utilities and all needed soft-wares. My C: Drive's total capacity is 108 GB but data on c: drive is only 12 GB. What Should i do ? What is the best solution for me? I need free solution.

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• How to setup email server in ubuntu 12.04LTS(debian 7 wheezy/sid) running on linode vps

  - by shihon

  I am working on email server, since i tried several times to create email server on ubuntu12.04LTS with postfix + dovecote + postfixadmin + courier + clamav + spamassassin. But everytime i install these packages i face new problems, like mails send to localhost users and found in users maildir. But I can't determine how to configure/setup for send an email to external smtp like gmail, yahoo. The most worst thing i can't determine how to use sasl, because i am not using SSL so it is not worthy for my domain. This is so complicated, i search everywhere on google: links are https://help.ubuntu.com/community/PostfixCompleteVirtualMailSystemHowto http://www.starbridge.org/spip/spip.php?article1&lang=fr http://knopix.wordpress.com/2008/01/16/postfixadmin-postgresql-courier-squirrelmail-on-debian-etch-howtotutorial/ http://flurdy.com/docs/postfix/ Is there any article for install email server on ubuntu 12.04LTS. Please help me to understand these things.

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• Computer refuses to POST

  - by TheX

  Computer refuses to POST. What it will do is the fan spins up, and the lights come on on the motherboard, but other then that it just sits there and laughs in my face! Here is what I have done... I have tried 2 different video cards, both known to work, 4 different sticks of RAM in all four ram slots, 2 processors (known to work), and 2 power supplies (known to work). The only constant is the motherboard... The Motherboard is a Asus m3a3-mvp deluxe. Anyone have any other ideas? Also, I have bread boarded it to make sure there where no shorts (taken everything out of the case and tried again).

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• Somebody knows why the sectors of the IBM floppy disk are named 1 to 8 (and not 0 to 7 )

  - by Olivier Briand

  I am now programming on a 8 bits Z80 computer with CP/M 2.2, (as a hobby) and the floppy disk format is IBM, 40 tracks, 8 sectors per track, 512 bytes per sector. free space is 154 Ko on each face of the disk. Why the sectors are indexed 1 to 8 (and not zero to seven, as usually is seen with computers)? The catalog of the floppy disk is on the track 1 (sector 1 to 4, 64 entries). I'm wondering is the catalog on track zero? Is the zero track reserved to included a system (as track 0 & 1 are reserved to the system on a CP/M floppy disk, and catalog is on track 2)?

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• What's the most reliable (i.e. time-proof) solution for organizing photos?

  - by digitxp

  I pooled together my photos from an old external hard drive, various Picasa Web caches, flickr, flash drives, and an old computer. They're all on my external hard drive, using extremely creative labeling, like allpictures pixix pix2 images familyphotos and so on (hey, I was 7 when I organized them last). My computer's hard drive can die at any minute, and the external is new but who knows what that means? I am planning to start reorganizing these picture, probably by face or time. I have Bridge CS5, Picasa, etc., but which one is the most likely to not crash and burn like my Vista laptop did with a ZIP file filled with pictures of a funeral?

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• Unix file permission for groups

  - by GOPI

  I am working on HP Unix server. I have a directory in which users from different groups need to create files. And the users of a same group should have complete access to the files created by their group and only read access for the files created by other groups. I tried to set sticky bit for the directory thereby to restrict access for other groups. But I face the following problem. Created File1 from user1 of GroupA. When I tried to execute the 'rm' command from user2 of the same group GroupA, it doesn't allow as user2 is not the owner of the file. can setgid (at directory level) or other command help me to sort this issue?

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• Adding Internal DNS server in Host file

  - by Param

  I have added Global DNS server ip address to one of my Desktop ( please see the Network configuration screenshot ). and after that i have added my both domain controller ip address in host file, and it is working fine. ( please see the below screen-shot for your reference ) Can you please guide, what problem can i face if i kept my configuration in this way. but i am wondering, can this setting can create a problem? because the computer will be able to reach corp.abc.com easily, with the help of host file.

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• What kind of issues would occur if resolve.conf had no dns servers set?

  - by Stuart Woodward

  I want to create a server for a customer and have that customer finish the configuration for themselves. It was been decided that rather than setting default DNS servers (i.e. something like Google's) that the customer should enter the information by themselves. I assume that the customer is technically competent enough to do this. If however they forget or neglect to set this up they might spend some time trying to figure out what is wrong and eventually contact support. (In this case, I think that setting a default might have been better.) Apart from the obvious inability to resolve hosts, what other issues might they face until they have set valid dns servers in resolve.conf?

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• Looking for Unix tool/script that, given an input path, will compress every batch of uncompressed 100MB text files into a single gzip file

  - by newToFlume

  I have a dump of thousands of small text files (1-5MB) large, each containing lines of text. I need to "batch" them up, so that each batch is of a fixed size - say 100MB, and compress that batch. Now that batch could be: A single file that is just a 'cat' of the contents of the individual text files, or Just the individual text files themselves Caveats: unix split -b will not work here as I need to keep lines of text intact. Using the lines option is a bit complicated as there is a large variance in the number of bytes in each line. The files need not be a fixed size strictly, as long as it's within 5% of the requested size The lines are critical, and should not be lost: I need to confirm that the input made its way to output without loss - what rolling checksum (something like CRC32, BUT better/"stronger" in face of collisions) A script should do nicely, but this seems like a task someone has done before, and it would be nice to see some code (preferably python or ruby) that does atleast something similar.

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• Running a script at startup as root?

  - by Usman Ajmal

  Hi i developed a script which I set to run at startup i.e. when the Desktop appears. In the script I mounted a partition using sudo mount /dev/sda1 /mnt &> result.txt After executing script a file named result.txt was created which contained sudo: no tty present and no askpass program specified In other words the mounting failed. If I run the script using sudo ./myProgram i don't face this problem and the drive gets mounted successfully. Any suggestions please....

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• Remove all files except for a few, from a folder in Unix

  - by nikhil

  I often face this problem. I have a set of files in a folder and would like to delete all of them except a few. For example: I have files named according to the date of creation (like 11-1-11.tar, 10-1-11.tar and so on). Now I would like to delete files like 10-1-11, 9-1-11 and so on but not some other files. Basically I would like to enforce what all should be deleted and what should be retained. How would I do this?

  Read the article

• How to take backup mirror copies of C: drive?

  - by metal gear solid

  I've installed everything on my C: Drive . Whatever i need Windows 7, updated drivers and utilities and software etc i need. I now i want to take a backup mirror of everything in a DVD or i can keep backup in another USB HDD. so in case if i face any windows or hard-drive failure in future then i can restore everything as it is as all are today. I don't want to reinstall everything again Windows, Drivers all utilities and all needed soft-wares. My C: Drive's total capacity is 108 GB but data on c: drive is only 12 GB. What Should i do ? What is the best solution for me? I need free solution.

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• Good bitmap fonts with big sizes and unicode support

  - by bitonic

  I really like bitmap fonts for programming/terminal. As far as I know there are two bitmap fonts with good unicode support: Unifont Fixed The problem is that I have a really high resolution screen, and they're both too small. Fixed does include a large size (10x20) but it looks really bad (it's basically always bold, and bold is a different face). Are there any other bitmap fonts with unicode support and large sizes? Terminus is the only font with a decent size but it doesn't have good unicode support. Having good coverage for mathematical symbols would be enough, since that's what I need.

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