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• Count all received packet using Tshark

  - by user1269592

  i am build application who start capturing via Tshark with command line and i am looking for option to count all the received packets after i am start Tshark process this is my function who start the process: int _interfaceNumber; string _pcapPath; Process tshark = new Process(); tshark.StartInfo.FileName = _tshark; tshark.StartInfo.Arguments = string.Format(" -i " + _interfaceNumber + " -V -x -s " + _packetLimitSize + " -w " + _pcapPath); tshark.StartInfo.RedirectStandardOutput = true; tshark.StartInfo.UseShellExecute = false; tshark.StartInfo.CreateNoWindow = true; tshark.StartInfo.WindowStyle = ProcessWindowStyle.Hidden; tshark.Start(); maybe someone had an idea ?

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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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• What is the best way to make Calculate SHA1 as a context menu option in Mac OS X?

  - by Andrei

  In order to calculate the SHA1 checksum of a downloaded file, I could type /usr/bin/openssl sha1 in Terminal and then drag there the file which I want check. To make it simpler, one could enable a Context Menu item for this action. What is the best way to create such item in Mac OS X 10.6? A detailed answer is appreciated, because I don't have good experience with AppleScript, etc. Step by step Open Automator Create new service Choose to receive selected Files and Folders in Finder Add action Run Shell Script where your bash command is /usr/bin/openssl sha1 "$@" and you pass input as arguments How can I get the output? Preferably in a Growl pop-up or a message window/dialog.

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• Virtualization Solution for Family Use

  - by Dave Potts

  I'm trying to put together a solution for my family (wife + three kids). At the moment I have one newish desktop and a couple of aging laptops. There are always arguments over who should have the fast desktop. I'm thinking I would like to invest in a new powerful server and then run virtual desktops for each user off the server so that each user would have the same experience regardless of which actual PC they were using. I would like to use just a Linux based desktop, but unfortunately I need to support some Windows games for the kids. I've not tried wine for the games but would be willing to give it a try. Any advice on what the setup should be would be most appreciated.

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• Interested in scp recipe for sftp [closed]

  - by GJZ

  You wrote in a reply this Blockquote The problem is that sftp runs as the user's id -- first, the sftp client ssh's into the target host as the given user, then runs sftp-server. Since sftp-server is running as a regular user, it has no way to "give away" a file (change owner of a file). However, if you are able to use scp, and assign a key pair to each user, you can get around this. This involves adding a user's key to root's ~/.ssh/authorized_keys file, with a "command=" parameter to force it to run a script that sanitizes and alters the arguments of the server-side scp program. I've used this technique before to set up an anonymous scp dropbox that allowed anyone to submit a file, and ensure that no one could retrieve submitted files and also prevent overwrites. If you are open to this technique, let me know and I'll update this post with a quick recipe. We are interested in this scp quick recipe for our community services file sharing. Best Regards, Gert Jan Zeilstra

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• Trying to get a new user up on pfSense IPSec VPN; Config file import failed, now getting gateway err

  - by Chris

  Caveat: I am not a sysadmin, so please forgive the n00bness of the query. We have a new user and I'm trying to get them up on VPN. We use pfsense as an IPSEC endpoint. This person is using Shrewsoft for the client. I had created an entry in pfsense for them and then edited a previous user's config file. Shrewsoft didn't import the config file very well and I had to hand edit the information. Now we are getting gateway errors. One thing I've noticed is that there is a different between the values of the preshared key stored on the firewall and the psk stored in the config file. I assume it has something to do with a hash, but I've no idea if that's the case and whether that might be what's causing the problem. Any suggestions greatly appreciated! Tangentially, is there some software used to generate these config files?

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• How to pass parameters to a function?

  - by sbi

  I need to process an SVN working copy in a PS script, but I have trouble passing arguments to functions. Here's what I have: function foo($arg1, $arg2) { echo $arg1 echo $arg2.FullName } echo "0: $($args[0])" echo "1: $($args[1])" $items = get-childitem $args[1] $items | foreach-object -process {foo $args[0] $_} I want to pass $arg[0] as $arg1 to foo, and $arg[1] as $arg2. However, it doesn't work, for some reason $arg1 is always empty: PS C:\Users\sbi> .\test.ps1 blah .\Dropbox 0: blah 1: .\Dropbox C:\Users\sbi\Dropbox\Photos C:\Users\sbi\Dropbox\Public C:\Users\sbi\Dropbox\sbi PS C:\Users\sbi> Note: The "blah"parameter isn't passed as $arg1. I am absolutely sure this is something hilariously simple (I only just started with doing PS and still feel very clumsy), but I have banged my head against this for more than an hour now, and I can't find anything.

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• Edit exim4 Message-ID for releasing blocked mail by Mailscanner

  - by F12

  Our sysadmin team edits the field Message-ID in exim4 header files (ending with -H) and substitues the first char after "<". e.g: 077I Message-ID: <[email protected] -- 077I Message-ID: <[email protected] I'd like to write a script to release the mails. I changed the part between "<" and "@" in the field Message-ID and substituted a hash value so the Message-ID looks like: 077I Message-ID: <[email protected] Now exim says "format error" in the log and the mail is not released. There was no change except for this one field. Why can't the ID be substituted like that? Does it need to be the exact same length? It's exim4 version 4.69-2ubuntu0.3.

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• ubuntu lucid: blank screen AFTER login. Please help!

  - by keisimone

  Hi there, after i did a partial upgrade my screen went blank. I think i used an onboard graphics card but i cannot be sure. Please advise me. i tried Ctrl+Alt+F1 at startup and did a apt-get upgrade and apt-get update. Didn't work. Am very frustrated after spending 3 days to get ubuntu to work for it to kill my screen the moment i did a first update. Please help.

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• I want to make my Application Open Source, but I'm unsure...

  - by Joern

  Hi! I have written a website, which is my big idea. Now I'm planning a version for intranets. The big question in my head is: "shall I make it open source?" and next are: What do I have to prepare What do I need for a good start What is the best way to find people with the same interests Who gives me the proof that I won't find a copy of my idea on another page, stolen from my open source code Please Discuss with me, give some good arguments pro and contra. Yours, Joern.

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• Pages partially load on rapid refresh

  - by user101570

  I recently set up a VPS slice with 256MB to run a LAMP stack (Ubuntu 11.04, Apache2, Mysql, PHP5). So far I'm only running a simple Wordpress site on an IP-based virtual host I set up. The performance is excellent, but I've noticed that if I send multiple HTTP requests from the same IP in a short time period, only partial pages are rendered. Then if I wait a bit and refresh the page, the entire page loads again. I noticed this behaviour when accessing the site from two browsers from my office desktop, but it also presents itself if I quickly navigate the site from a single browser (any browser). I'm guessing this is an Apache phenomenon, as the pages are rendered correctly except under the conditions above, but perhaps I'm wrong here. Could it be my hosting company with some kind of DOS protection in place? As a relative Linux/server noob, I'd really appreciate any insight into what settings in Apache could explain this behaviour, and how I might go about changing it.

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• how to stop powershell mangling command line options for program executed from shell?

  - by kem

  From the powershell prompt, when I try to run a program and feed it a command line option, powershell ends up mangling the option. Why does this happen? Is there any way to stop it besides enclosing the option in quotes? For example, from the powershell prompt: PS Microsoft.PowerShell.Core\FileSystem::\\mach\share .\myprog.exe -file=input.txt myprog.exe ends up getting two arguments: 1) -file=input 2) .txt I need to run it like: .\myprog.exe "-file=input.txt" or .\myprog.exe '-file=input.txt' to force it to be one argument. No other shell does this.

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• I keep getting OpenSSL Header Version not found error when compiling OpenSSH Debian Squeeze

  - by Romoku

  I built Openssl1.0.0d ./config shared no-threads zlib It installed fine to the default /usr/local/ssl I went and downloaded OpenSSH 5.8p2 and ran ./configure but now it keeps giving me a Openssl version header not found error even when I set --with-ssl-dir= I've tried it with arguments /usr/local/ssl/include /usr/local/ssl/include/openssl /usr/include /usr/local/ssl/lib I looked in config.log and found error: openssl/opensslv.h: no such file or directory which makes little sense since I pointed openssh to where it is store. /etc/ld.so.conf include /usr/local/ssl/lib I'm at a loss at this point. Answer (maybe): Because I am an idiot. include /usr/local/ssl/lib is incorrect. /usr/local/ssl/lib is correct. It needs to be before the first include.

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• How to edit the list of files to download in a .torrent file?

  - by Forbidden Overseer

  I have a torrent that contains many files in it, but I don't want to download all of them because I need only few files among them. I am not downloading from a torrent client, but I am actually using put.io service that converts torrents into direct downloads for me. I want to edit the .torrent file (or magnet link) in such a way that I get only those files which I need from the torrent. I tried by editing with text editors, but I am getting some crazy hash errors when I did that. I have seen people editing trackers in a torrent file (using online editors and other editors), but none of them edited the list of files in the torrent file. So, the question is: How to edit a .torrent file (and save it back as another .torrent file) such that when you run that torrent file, it only downloads only those files you need?

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• Mail being sent as root on Ubuntu 14.04

  - by Benjamin Allison

  I'm really struggling with this. I'm trying to set up this server to send mail using Gmail's SMTP. Google keeps bouncing the messages, saying that that Authentication is required: smtp.gmail.com[74.125.196.109]:25: 530-5.5.1 Authentication Required. Learn more at smtp.gmail.com[74.125.196.109]:25: 530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 But it seems my server is trying to send mail as [email protected]. I'm baffled. Here's what I've done so far: Updated mail.cf relayhost = [smtp.gmail.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_tls_CAfile = /etc/postfix/cacert.pem smtp_use_tls = yes Created /etc/postfix/sasl_passwd: [smtp.gmail.com]:587 [email protected]:password Then did the following: sudo chmod 400 /etc/postfix/sasl_passwd sudo postmap /etc/postfix/sasl_passwd cat /etc/ssl/certs/Thawte_Premium_Server_CA.pem | sudo tee -a /etc/postfix/cacert.pem service postfix restart I can't for the life me get a mail message to send, or change the default mail user from [email protected] to [email protected] (FWIW, I'm using Google Apps, that's why it's not a .gmail address).

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• Advanced Terminal / Console apps for Mac OS X?

  - by Jakob Egger

  I use a lot of command line programs, very often with similar arguments. Can anyone recommend an application or a workflow that allows me to store often used shell commands and search through my recent commands, using a GUI? I have commands that I use very often (eg. rsync a specific directory to a server) and other commands that I use less often. Creating shell scripts for every code snippet I might reuse seems a bit awkward. Especially for programs that I use seldomly, I end up reading the docs over and over again, because I forgot to write down the exact shell command. Ideally I would like an app that's just like Terminal.app, but provides some kind of history and snippet management. What do you use to keep track of shell commands?

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• How can Automator or Applescript rotate 500,000 images in folders and subfolders?

  - by Ludi

  I have very specific question. I've got 500,000 images that sit in 98 subfolders. Some of the subfolders contain 25,000 images. Is there any script/automator workflow that I can use? I was trying to create a workflow: Ask for Finder Items Get Folder Contents (tick repeat for each subfolder found) Rotate images It works OK, but only for these folders where there is less than 4,096 files: I normally receive following error message: Rotate images failed - 1 error too many arguments (12019) -- limit is 4096 Is there any way to increase this limit or create completely different apple script? I really hope that someone will help me with this one.

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• Making a shortcut for the Skype Metro application

  - by Phazyck

  In the accepted answer to this question, it is described how to make a shortcut for any Metro app, which you can then place in the startup folder. Example: By making a shortcut, People.url, which points to "wlpeople:", and placing it under the path, "%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup", one can make the People app start up along with Windows. I'm close to doing the same, but with the Skype app: My attempt at making the Skype Metro app start up with windows: By making a shortcut, Skype.url, which points to "skype:", and placing it under the path, "%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup", one can make the Skype app start up along with Windows. This shortcut will start up the Skype app, however, if the app is not already running, the app will hang when starting up. Can anyone tell me how to fix this? Am I using the wrong shortcut, or do I perhaps need to supply it with some arguments?

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• Using rspec to check creation of template

  - by Brian

  I am trying to use rspec with puppet to check the generation of a configuration file from an .erb file. However, I get the error 1) customizations should generate valid logstash.conf Failure/Error: content = catalogue.resource('file', 'logstash.conf').send(:parameters)[:content] ArgumentError: wrong number of arguments (0 for 1) # ./spec/classes/logstash_spec.rb:29:in `catalogue' # ./spec/classes/logstash_spec.rb:29 And the logstash_spec.rb: describe "customizations" do let(:params) { {:template => "profiles/logstash/output_broker.erb", :options => {'opt_a' => 'value_a' } } } it 'should generate valid logstash.conf' do content = catalogue.resource('file', 'logstash.conf').send(:parameters)[:content] content.should match('logstash') end end

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• rsync --link-dest behaviour when run as sudo

  - by fotNelton

  In order to create regular backups, I'm using rsync together with --link-dest so as to create hard-links for unchanged files. For example: rsync -ax \ --partial --delete --delete-excluded --inplace \ --exclude-from=/tmp/temp_excludes \ --link-dest=/Volumes/Backup/current \ /Users /Volumes/Backup/2012-06-25 This works very well as long as I start the process from my normal user account. Though as soon as I start the process using sudo it behaves erradically, meaning that rsync copies all the unchanged files instead of hard-linking them. Since sudo modifies the environment, I've already also tried sudo -E in conjunction with making sure that my sudoers file has the corresponding option set. Well, that didn't work either. So, the question is, how can I run rsync using sudo? Whereas the above example only shows a backup of the Users directory, I also need to backup some system files that I can only access as root.

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• How do I change the output line length from the "top" linux command running in batch mode

  - by Tom

  The following command is useful to capture the current processes that are taking up the most CPU in a file: top -c -b -n 1 > top.log The -c flag is particularly useful because it gives you the command line arguments of each process rather than just the process name. The problem is that each line of output is truncated to fit on the current terminal window. This is ok if you can have a wide terminal because you have a lot of the output but if your terminal is only 165 characters wide, you only get 165 characters of information per process and it is often not enough characters to show the full process command. This is a particular problem when the command is executed without a terminal, for example if you do it via a cron job. Does anyone know how to stop top truncating data or force top to display a certain number of characters per line? This is not urgent because there is an alternative method of getting the top 10 CPU using processes: ps -eo pcpu,pmem,user,args | sort -r -k1 | head -n 10

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• How do quotes/strings work in Powershell?

  - by Casey

  I'm have a command line that works in the regular old Windows Command Shell, but somehow gets misinterpreted in Powershell (I'm fairly new to Powershell). sqlcmd -S .\SQLEXPRESS -i "f:\SQLBackups\ExpressMaint.sql" -v DB="ksuite" -v OPTYPE="DB" -v BACKUPFOLDER="f:\SQLBackups" -v REPORTFOLDER="f:\SQLBackups\Reports" -v DBRETAINUNIT="days" -v DBRETAINVAL="7" Powershell seems to be stripping the drive letters out of the arguments that require paths. For example, I get the following when I attempt to run the above command in Powershell: Sqlcmd: ':\SQLBackups': Invalid argument. Enter '-?' for help. Well sure it's invalid without the drive letter. I have tried variations on double quoting it, escaping it, etc. but can't get it to work. What am I missing that Powershell does differently?

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• Applescript won't open applications on my external monitor

  - by jpadvo

  I'm trying to open a new MacVim window with Applescript, and have found partial success with this: do shell script "cd \"~/code/application\"; ~/bin/mvim > /dev/null 2>&1" This works fine, and opens a new MacVim window with it's working directory set to ~/code/application. BUT it always opens on the screen of my laptop, not on the external monitor with the currently active space where I am working. Is there a way to get MacVim to open in the current space? Edit: same problem with opening a finder window: tell application "Finder" to make new Finder window

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• match patterns update output file uncomment when desired

  - by user2692634

  Need suggestion for following. Have two files myfile and responsefile. First file myfile.txt user=myname user_1=yourname group=mygroup group_1=yourgroup second file responsefile.txt #Please fill details user= #user_1= #user_2= #Please fill details group= #group_1= #group_2= Based on myfile.txt data update responsefile.txt as below and the file responsefile.txt is lenghty of about 604L, 16481C. Result output responsefile.txt #Please fill details user=myname user_1=yourname #user_2= #Please fill details group=mygroup group_1=yourgroup #group_2= If you observe myfile above, I want to match user= in responsefile, then update as user=myname, same applies for group=. Then match user_1= and group_1= which is hashed or commented in responsefile, update as user_1=yourname and group_1=yourgroup. Should not remove hash or uncomment for others in file. I tried this awk -F= 'NR==FNR{a[$1]=$0;next}$1 in a{$0=a[$1]}1' myfile.txt responsefile.txt Please suggest thanks in advance.

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• How does one enable --write-mostly with Linux RAID?

  - by user76871

  Unfortunately the mdadm and mdadm.conf man pages are not quite up to par. I would like to enable the --write-mostly flag for my RAID, but neither the man pages nor the internet will tell me how. I am not aware of any place to put default arguments for mdadm, nor aware of when it would be launched and by what. It seems the logical place to add this information is mdadm.conf, but the flag is unmentioned in man mdadm.conf. Where and how can I enable --write-mostly? Thank you.

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