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• How can I reverse sudo apt-get install command

  - by michael

  Hi, In ubuntu, I did these commands: sudo apt-get install build-essential vala-desktop-agnostic checkinstall sudo apt-get build-dep avant-window-navigator How can i un-apt-get, or uninstall the packages it pulls in?

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• Windows Vista not booting after deleting a partition

  - by crapiscrewedup

  Hello, My cousin just deleted his Linux partition and another smaller partitio nand now Windows is not booting, no he does not have the recovery disc. When Windows tries to boot it goes to "GRUB" and says "partition not loaded". What are some GRUB commands? And is it possible to fix this without using the recovery CD? Thank you in advance.

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• Spamassassin command to tag mail & move mail with a spam score of over 10 to a new folder?

  - by ane

  Have a maildir with tens of thousands of messages in it, about 70% of which are spam. Would like to: Run /usr/local/bin/spamassassin against it, tagging each message if the score is 10 or greater Have a tcsh shell or perl one-liner grep all mails with a spam score of over 10 and move those mails to /tmp/spam What commands can I run to accomplish this? Pseudocode: /usr/local/bin/spamassassin ./Maildir/cur/* -tagscore10 grep "X-Spam-Score: [10-100]" ./Maildir/cur/* | mv %1 /tmp/spam

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• Not all pages are printed in IE8

  - by Mitya Ustinov

  I have created a print.css, which doesn't include anything special, just some blocks are hidden for print media and some are visible. So no css code here. The problem is that when I'm trying to print or check a print preview, some of the pages (2 of 4) are not printed neither previewed. But when I'm changing a scale to smaller number than 100% (80%, 90%) all pages are shown and printed. So does anybody met the same problem - is this just an IE issue?

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• Use a RAID Controller without drivers?

  - by cian1500ww

  Ordered an Adaptec 1420SA RAID card for my Debian Squeeze media server but didn't check to see if it was compatible, turns out it's not because it uses something called hostRAID which requires special drivers that aren't available for Debian. Could I still use the card as an ordinary controller and just use OS software RAID?? I'm not looking for speed, just need to mirror some drives that will be used for storage, the OS will reside on a disk connected to the server's onboard controller so the system won't be booting from any drives on the Adaptec controller.

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• Cisco - Zone Policy Actions (pass, inspect, drop, log) - What is the difference?

  - by Jonathan Rioux

  Have these commands for instance: policy-map type inspect IN-OUT_PlcyMAP class type inspect IN-OUT_ClassMAP inspect <------ policy-map type inspect IN-OUT_PlcyMap class type inspect IN-OUT_ClassMAP pass <------ zone security INSIDE zone security OUTSIDE zone-pair security IN->OUT source INSIDE destination OUTSIDE service-policy type inspect IN-OUT_PlcyMAP What is the difference between "inspect", "pass", "drop", "log", and "reset ? I could not found any information on this on Google.

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• Proper SSH keys location for a system user ?

  - by Thibaut Barrère

  I have a system account with which I run a database (namely mongodb). By default it has no home. Now I'd like to trigger scp commands from that account, with ssh keys authentication to a remote server, to export backups. Should I just create a /home/mongodb and /home/mongodb/.ssh folders manually to store the SSH keys, like the default for regular users ? Is it still considered a system account after that ? Thanks!

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• Command-line tool to disable IPv6 in 2K8R2?

  - by brianicus

  I'm in the process of deploying a bunch of Win2K8R2 VMs via vSphere's deployment template stuff, and in the deploy specification it allows you to punch a list of commands to run. Aside from activating Windows (which it doesn't do), it works pretty well. Does anyone know the command-line equivalent of going into a network adapter's properties and unchecking the IPv6 box? If I had that I could put that in the spec and not have to manually uncheck the IPv6 box.

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• How to use USB Key in Xen 5.6 Environment?

  - by Az

  I am looking for a way to use USB key on a guest OS running on a 5.6 Xen Server environment. The catch is that I need to actually detect in the Guest OS (Win2003 Server) like an actual USB Key. Attaching it as a storage drive doesnt work (It is a key with special attributes that servers as a licensing mechanism). Just wondering if anyone has had a similar need and found a good solution? Thanks, Nate

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• Suggestions for making sysfs parameters persist across reboots

  - by ewwhite

  I'm experimenting with large changes to Linux system runtime parameters exposed through the sysfs virtual file system. What is the most efficient way to maintain these parameters so that they persist across reboots on a RHEL/CentOS-style system? Is it simply dumping commands into /etc/rc.local? Is there an init script that's well-suited for this? I'm also thinking about standardization from a configuration management perspective. Is there a clean sysfs equivalent to sysctl?

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• Executing a command in vim from a commandline

  - by TK

  I would like to run :helptags ~/.vim/doc in vim, but from command line. The purpose is to run the command occasionally with other commands to keep my tools up-to-date (probably in a cron job on my development machine. I looked around man vim, but cannot figure out what option I need to pass. I think this is a general question for vim, but I'm using Mac and Ubuntu for the development.

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• how to change the png file background to transparence

  - by user36089

  Hello everyone I used Paintbrush drawing an icon, if it is on a colored background, it will display a white block shown as below. I prefer to change the icon background from white color to transparent color, Do I need a special tool? Thanks interdev

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• Setting up a fake email address to trap spammers

  - by Brent

  I have heard it suggested that we set up a special email address, with it's only purpose being to be harvested. Then blacklisting every sender that targets this address. I'm wondering: if anyone else has tried this how do you go about doing it (ie - put the address in a hidden field on your website - or better ways?) does it work? Is there anything to watch out for when trying this (ie. legitimate senders using harvested addresses?)

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• PowerISO for Mac can't convert .img

  - by None

  I have a bootable .img file that I want to convert to a bootable .iso file. I downloaded poweriso for Mac and used this command: poweriso convert MyOS.img -o MyOS.iso -ot iso which returned this output: PowerISO Copyright(C) 2004-2008 PowerISO Computing, Inc Type poweriso -? for help MyOS.img: The file format is invalid or unsupported. I thought PowerISO could convert .img to .iso. Was I incorrect, or did I use the wrong commands or something like that?

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• Does anyone still use KEdit? [closed]

  - by sylvanaar

  Its a text mode editor - from here. My entire office does - i still don't know why. Are there any other KEdit users who could shed some insight on this. I am not asking why my office uses it - more why would they want to? Is there anything special about it?

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• Using www-data through SSH

  - by Fluidbyte

  For development purposes I'm using www-data (on an ubuntu 11.10 server) to ssh in and fire git commands and basic stuff against the webroot. I don't have things like command history, coloring, etc like I do when I ssh in as any other user, so I'm curious how to get this working. I'm assuming I need a `.bashrc' file, but I'm not sure what to include or (more importantly since I could just copy the one from another user) where it goes.

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• When & how does logrotate run under Ubuntu 10.04?

  - by OoJoo

  Hello, I am new to sysadmining and have a few questions: Where and how is the logrotate procedure initaited by the system? What time of day are my "daily" rotated logfiles being rotated? Do the prerotate commands run for each log file matched in a *.log entry? Thank you

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• Process emails with /etc/aliases

  - by Rodrigo Asensio

  I'm calling shell scripts inside /etc/smrsh to process incoming emails as commands for my system. As I'm seeing all incoming emails are not making it to /var/mail/spool/USER. Is there any way I can access to the content of the emails ? some variable $1 $2 comming with the content values ? If not, how do I access to the content of the emails received ? thanks guys

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• Remove some junk characters from server console log.

  - by Jayakrishnan T

  Please look in to the picture,here am trying to open(with vi editor) my server console log file(around 100MB) and it takes more than two minutes to open with so many special characters.after deleting the first line (means typing "dd")then i can easily view the file and size of the file is also reduced very much.My server OS is RHEL 5.4 and jboss is running in to it. Please help me to avoid such junk characters coming to my server console log files and it helps me to save my valuable space in server.

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• shell pipe behavior with MySQLDump

  - by unknown (google)

  I am using mysqldump for a large database (several GB) and import the result from a pipe, please see commands below, does it do incremental pipe, or wait until the first one finishes then import? is this a good way of importing large db across servers? I know you can export gz it, then pscp it then import. Quick alternative are welcome mysqldump -u root -ppass -q mydatabase | mysql -u root -ppass --host=xxx.xx.xxx.xx --port=3306 -C mydatabase

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• How does MobilePhone.app connects to the baseband?

  - by Knodel

  I'm trying to write an app for jailbroken phones which will be an analogue for MobilePhone.app. But I don't know the way MobilePhone.app connects to the baseband (or the protocol that is used) and which commands does the baseband "understand". Can you help me? Thanks in advance!

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• Facilities of Linux Ubuntu User Interface (both graphical or command line)

  - by Tom Brito

  In command line, we have, for example, TAB, which autocomplete the commands. In the GUI, we need just to select a text for Ubuntu to copy it. And the mouse middle button can be used to paste. Which other "untold" secrets Ubuntu hides? obs. I don't know which of the items I told are for any Linux or Ubuntu specific.

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• If I run this command, will my Apache2 still work?

  - by Alex

  sudo ln -s /etc/apache2/mods-available/deflate.load /etc/apache2/mods-enabled/ sudo service apache2 restart Basically I just want to turn on gzip for Apache2. I don't want to break anything!! Please, tell me that nothing will break when I run these commands.

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• Is TRIM supported on RAID 0 configurations for SSD drives in windows 7?

  - by John Sonmez

  I know this question has probably been asked at some point in the past, but I am trying to figure out if Windows 7 supports passing TRIM commands through RAID controllers yet. I am trying to decide between buying a single SSD drive and utilizing TRIM or Buying two SSD drives and putting them in RAID 0 configuration What is the fastest current configuration I can set up? I want my development machine to be BLAZING fast.

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• Tool to run same key strokes on multiple unix machines

  - by virtualvoid

  I want to run the same commands on multiple machines, I know I can do this using ssh scripting or things like clusterssh, however I don't want to install anything on the server. (Don't have the rights) What I want is to just clone the keystrokes across multiple machines e.g. run cat /etc/oratab on one window and same is run on multiple windows e.g. in putty, is there a tool to do that from a windows client.

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