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• how to properly edit hosts, hostname and resolf.conf?

  - by Firewall

  i,v been searching the internet for a real noop tutorial on the subject but could not found any direct info. on how to edit these files the proper way. i,v got a debian internet server that i use to host some personal domains and runs squid and rTorrent. the server is up and running with no problems but i am confused about a few things. lets say that i named my server (foo), my domain is (example.com) and my public IP is 95.211.133.200 now: should /etc/hostname contains: tango.example.com or tango <----- just the server name should /etc/hosts contains: 127.0.0.1 localhost.localdomain localhost 95.211.133.200 foo.example.com foo should /etc/resolf.conf contains (along with the nameservers) both: domain example.com search example.com or just the first one. are there any other files that i should edit in order to make things right? last thing, the command: domainname returns: (none) i believe it should return (example.com). what should i do to correct that?

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• Is it possible to remove buzzing from headphones which occurs only when scrolling / window redrawing?

  - by Billy ONeal

  Whenever a lot of drawing is happening on my laptop a buzzing noise is emitted by the sound hardware, which is clearly audible with headphones (similar to this question or this one). I've tried both the headphone jack on the laptop itself, and also on the dock. I've used other laptops and they all seem to have similar problems here, which leads me to believe this is more a function of relatively low quality laptop sound hardware than any fault with the headphones or this laptop in particular. I'm curious if there's some piece of hardware I might use to eliminate the buzzing. For instance, would an external USB sound device fix the problem or is it likely subject to the same kinds of issues? Would a simple filter/choke on the headphone cord itself possibly help? Or is one simply stuck with poor quality audio from laptops period?

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• Shell Script to Start Mysql Server if not running

  - by user103373

  I have written a shell script to start mysql server & send a mail to admin user if it's restarted via shell script. What i am facing an issue if I run this shell script on terminal it's work perfectly & If same script runs via cronjob it's only sending the mail to the user & problem remains same. Is this problem relates to permission & how can i resolve it. Shell Script-------- #!/bin/bash EMAIL="[email protected]" SERVICE='mysql' if ps ax | grep -v grep | grep $SERVICE > /dev/null then echo "$SERVICE service running, everything is fine" else echo "$SERVICE is not running" /etc/init.d/mysql start cat <<EOF | msmtp -a gmail $EMAIL Subject: "Alert (Test Server) : Mysql Service is not running (Manually Restarted)" Mysql Server Restarted at: `date` EOF EXIT I am using msmtp for sending mail to the user on ubuntu 12.04 Server.

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• Automatize uploading the YouTube

  - by John

  Here's the problem: I would like to keep lots of home made videos. Of course, they are subject to being lost, or somebody could steal the the computer, or water or fire could destroy them. Secondly, I have to plug in my hard drive every time I want to watch something, which I find slow and cumbersome. I was thinking that perhaps I could upload the videos to Youtube with the privacy set to invite only and then delete the video from the hard drive automatically. Could this be done?

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• How can an RSA key be placed in a "non-folder"?

  - by Phil

  I lack a lot of knowledge regarding the subject so please excuse me if my question is very ignorant. I just started out with RSA key authentication to my test-server. It did not work at the beginning and I tried and tried and re-tried to no avail. Then I realised, I was creating "mkdir ~/.ssh" and then "mkdir ~/.ssh/authorized_keys" before placing the id_rsa.pub into the latter folder, which did not work. My question is: How can id_rsa.pub be placed in "authorized_keys", which is not created by "mkdir" therefore not a folder? Thank you.

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• I found two usb sticks on the ground. Now what ?

  - by Stefano Borini

  As from subject. I want to see what's inside. I am seriously interested in finding the owner if possible and returning them, but I am worried it could be an attempt at social engineering. I own a macbook intel with OSX 10.6. It is a very important install. What would you do in my situation if you want to see the content without risks ? Any proposal welcome. Edit: I decided not to plug them in, and I brought them to the hotel reception. They will forward it to the police.

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• Conditional cPanel Forwarder

  - by Wireblue

  We have many clients on a cPanel server, some of which also have SSL certificates setup. Each year when the renewals are sent to webmaster@ their domain we would like a copy of those emails so we can install the SSL certifciate for them and issue invoices etc. So I'm wondering if there is a way we can selectively or conditionally forward certain emails if they match certain rules? (in cPanel) I'm thinking: If an email is sent to "webmaster@domain" and the subject contains "ssl", then forward to "[email protected]". Any ideas? Thanks in advance, Wireblue

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• Was Windows 95 an Operating System?

  - by shantnu

  This question maybe a bit historical, but we didn't have Superuser at the time. Around 2000 when I was starting my Computer science degree, a subject was Operating systems. The teacher asked us to list a few OS. I said Windows 95. I was immediately shot down. Windows 95 wasn't on OS, as it used DOS to boot up. The actual OS was DOS, Win 95 was just a graphical wrapper around it. I pointed that all trade magazines called Win95 an OS, but was told that they were run by laymen, and as a professional, I should know better. DOS was the only OS from Microsoft, at least till Win2K came out later that year. So 12 years on, I'm still not sure. Could Win 95 be considered an OS?

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• Graphing per-user CPU usage on a Linux machine

  - by mart1n

  I want to graph (graphical output would be great, i.e. a .png file) the following situation: I have users A, B, and C. I limit their resources so that when all users run a CPU intensive task at the same time, those processes will use 25%, 25%, and 50% of CPU. I know I can get the real-time stats using top but have no idea what to do with them. I've searched through the huge top man page but haven't found much on the subject of outputting data that can be graphed. Ideally, the graph would show a span of maybe 30 seconds. Any ideas how to achieve this?

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• Opening notebooks

  - by Plastkort

  I have a Compaq CQ40 which has a defective CPU fan, it seems unable to cool the notebook enough at this time, it is constantly running, and if you move the pc up/down to look under it, it makes some sort of chainsaw sound. I have tried to take out all the screws underneath, but I still have a problem with the plastic cover on the above; I am afraid I might break it since it seem to be connected with plastic clips underneath. I have fixed notebooks before, but this one seem new, how can I open the plastic cover above without breaking it? Any advice, tips and tricks would be so nice to have, not only for this notebook, but any future notebook also I might need to repair. It would be nice if anyone here knows a place with video tutorials on this subject as well.

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• Files with illegal filenames [closed]

  - by Josh

  Possible Duplicate: How to force Windows XP to rename a file with a special character? I have a few files whose names have characters such as "?" and ":" that are forbidden by windows. I'm not sure how they managed to get there with these names, since I can't manually create files with these names. They're recovered from an HFS drive, but the tool that recovered them was running under windows and so should have been subject to the same restrictions while creating them, I would think. Anyway... now that they're here, I can open them, but I can't move, copy, rename, or delete them. I want to delete a few of them, but most I want to save and copy to another drive. How might I go about this?

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• Does a modern PC require a graphics card to run?

  - by ArtM

  As I can remember, on old systems (Pentium II or III) it was not possible to boot and run the PC if the graphics card was missing (AGP cards were used in those days). Many years from then, I'm using motherboards with integrated graphics and I have no experience related to this subject, the "graphics card" always was present. Currently I intend to build a home/private "server" for my purposes and most of the motherboards I want to buy have no integrated graphics (AMD 870 or 970). I can take a normal graphics card from my firends for a few hours/days and use it when installing the necessary software. The question is: can I boot and run the PC without problems after I install everything I need and the graphics card is removed? if a general answer cannot be given, at least some examples of manufacturers/MB series/MB models will be helpfull I think it's obvious, but for completeness: I mean cheap desktop components, not real servers.

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• Update Windows using VB.net

  - by kagstrom2100

  I'm currently having my internship at a elementary school. I got the task to setup users for some classes, with that I also need run Windows Update too. So I have been scanning Google for something that does this in vb.net since I have been coding some in that before. I din't find much on the subject except for "C:\Windows\System32\wuauclt.exe /detectnow" though when I run it it don't seem to do much. So the question is it there is any command or file you can run to make Windows download and install updates? To clarify it need to work on Windows 7, I'm also writing the program in .NET 3.5. Please let me know if you need any more information! Thanx in advance :)

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• Shrink NTFS Partition Windows 2003

  - by Coops

  We have an iSCSI target provided by a CentOS server attached to a Windows Server 2003 Standard box, formatted in NTFS. My question is this - I know we can resize the backend block device fine (LVM et al.), however how do you tell Windows the NTFS filesystem has shrunk afterwards? [note we want to shrink]. I'm imagining a world of pain if it's not done correctly! This is a production box, so ideally we'd like the process to keep the drive mounted and online during the process, but downtime can be scheduled if need be. 90% of what I've found on the subject so far basically involves using the 'ntfsresize' command in Linux to do the job -- but surely Windows can do this itself? Cheers!

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• Solaris kstat sdX disk nread counter value decreasing

  - by mykhal

  I get strange disk io nread (bytes read) counter values (from kstat) on Solaris. Example of collected nread value for sd6 disk collected in 30s interval (command kstat -n sd6): 768579416 768579416 768579416 768579416 768579416 768579416 768579416 768496080 768496080 768496080 768496080 768496080 768496080 768496080 768496080 768530896 768530896 768447560 768447560 768447560 One would suppose that the relative read bytes count can't be negative.. I wonder what can couse this situation and whether there is more reliable disk io data available. Some info about the system: machine:~ # uname -a SunOS machine 5.10 Generic_127112-11 i86pc i386 i86pc machine:~ # cat /etc/release Solaris 10 11/06 s10x_u3wos_10 X86 Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. Use is subject to license terms. Assembled 14 November 2006

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• Is it safe to disable clamd?

  - by mk1000

  Clamd is taking up about 5% of my memory (2GB) on my dedicated server and I'm wondering if I can disable it without any security risks. The server just hosts a few of my own websites. For the most part, email received and sent is done through gmail (which connects to my pop3 accounts). The only other email use case is where one of my websites parses all emails and grabs attached images and the subject line. Would there be any security / risks of virus infection if I disable clamd?

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• Organize Outlook email (delete messages that have been replied to)

  - by Les

  Imagine the scenario where you and I converse on a subject via email. Each time we reply to the other's email, we include all the message along with our response. If we strictly alternate our replies, then clearly I can delete all but the last message and retain the entire conversation. Now add several more people to this scenario and remove the strict alternation of replies such that the latest message no longer contains the entire conversation. Is there a tool that can delete messages in the thread such that the entire thread can be reviewed with a minimum number of messages? Or, take it to the next level and merge all responses in such a way as to preserve the entire conversation in a single message.

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• Thunderbird 3.0 - how to prevent new message indicator from clearing?

  - by Joe Casadonte

  I just installed Thunderbird 3.0 and there are a few things driving me batty. When new email is delivered it has a faint star to the left of the subject (this is different than the new star column thing). In the old days (i.e. last week) the new message indicator wouldn't go away until I read the message or left the folder and returned. Now, as soon as I do anything with any email message, all new message indicators are cleared. How can I go back to the old behavior?

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• Backup/Multihomed network connection

  - by J_P

  We have a couple locations that require 24/7 access to Internet and our current provider (AT&T) while mostly good is not always up. My concern would be if I go with another provider (for example Comcast) I'm going to be subject to the same down time if it's in the "last mile". I for the most part don't know where the failure points are on the ISP side but I would imagine the large majority are within the last mile. I'd looked at Mifi or similar solution but have concerns about bandwidth caps and overall speed. Any suggestions would be appreciated.

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• Error 1069 the service did not start due to a logon failure

  - by Si.

  Our CruiseControl.NET service on Win2003 Server (VMWare Virtual) was recently changed from a service account to a user account to allow for a new part of our build process to work. The new user has "Log on as a service" rights, verified by checking Local Security Settings - Local Policies - User Rights Assignment, and the user password is set to never expire. The problem I'm facing is every time the service is restarted, I get the 1069 error as described in this questions subject. I have to go into the properties of the service (log on tab) and re-enter the password, even though it hasn't changed, and the user already has the appropriate rights. Once I enter the password apply the changes, a prompt appears telling me that the user has been granted log on as a service rights. The service will then start will no problems. Not a show stopper, but a pain none-the-less. Why isn't the password persisting with the service?

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• What is a good topic for a research paper on modern computer architecture?

  - by Max Schmeling

  This may not be the right place for this, but I wanted to get this question in front of some of the brightest people on the internet, so I thought I'd give it a shot. I have to write a research paper on some modern aspect of computer architecture. The subject is really not very restrictive; pretty much any recent development in computer hardware will work. I want to write it over something really interesting, but I don't have a lot of good ideas. What would make a really interesting paper?

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• Linux command line based spam checker?

  - by anonymous-one

  Does a command line based spam checker exist? We have created a mailbox at a 3rd party, and unfortunately decided on spam checking 'disabled' in the initial setup. There is no way to re-enable spam checking, the mailbox must be delete (and thus all contents lost) and re-created. Does anything exist where we can pump in either: A) Subject + from + to + body + all other fields. OR B) Raw message dump (headers + body). And the command line will let us know weather the email is possibly spam? Thanks.

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• How can I forward certain emails based on header information with Postfix?

  - by Jason Novinger

  We receive service requests via a particular email. The request is then forwarded to other addresses, using an entry in virtual_alias_maps. Upon seeing the word "EMERGENCY" in the subject line of a request to this email, I would also like to forward this to another address (an alias of our administrator's SMS email addresses). I think I can accomplish this with header checks and the REDIRECT command. However, REDIRECT only sends it to the redirected address, not the forwarded addresses. In the case of "EMERGENCY" I would like it to go to the redirect address and the original forwarded addresses. I am fairly new to Postfix and I feel like I am missing something here. Any suggestions?

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• Is it possible to redirect/bounce TCP traffic to an external destination, based on rules?

  - by xfx

  I'm not even sure if this is possible... Also, please forgive my ignorance on the subject. What I'm looking for is for "something" that would allow me to redirect all TCP traffic arriving to host A to host B, but based on some rules. Say host A (the intermediary) receives a request (say a simple HTTP request) from a host with domain X. In that case, it lets it pass through and it's handled by host A itself. Now, let's suppose that host A receives another HTTP request from a host with domain Y, but this time, due to some customizable rules, host A redirects all the traffic to host B, and host B is able to handle it as if came directly from domain Y. And, at this point, both host B and the host with domain Y are able to freely communicate (of course, thought host A). NOTE: All these hosts are on the Internet, not inside a LAN. Please, let me know if the explanation is not clear enough.

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• Best way to program a call to php

  - by hairdresser-101

  I've recently posted here http://stackoverflow.com/questions/2627645/accessing-session-when-using-file-get-contents-in-php about a problem I was having and the general consensus is that I'm not doing it right... while I generally think "as long as it works..." I thought I'd get some feedback on how I could do it better... I was to send the exact same email in the exact same format from multiple different areas. When a job is entered (automatically as a part of the POST) Manually when reviewing jobs to re-assign to another installer The original script is a php page which is called using AJAX to send the work order request - this worked by simply calling a standard php page, returning the success or error message and then displaying within the calling page. Now I have tried to use the same page within the automated job entry so it accepts the job via a form, logs it and mails it. My problem is (as you can see from the original post) the function file_get_contents() is not good for this cause in the automated script... My problem is that from an AJAX call I need to do things like include the database connection initialiser, start the session and do whatever else needs to be done in a standalone page... Some or all of these are not required if it is an include so it makes the file only good for one purpose... How do I make the file good for both purposes? I guess I'm looking for recommendations for the best file layout and structure to cater for both scenarios... The current file looks like: <?php session_start(); $order_id = $_GET['order_id']; include('include/database.php'); function getLineItems($order_id) { $query = mysql_query("SELECT ...lineItems..."); //Print rows with data while($row = mysql_fetch_object($query)) { $lineItems .= '...Build Line Item String...'; } return $lineItems; } function send_email($order_id) { //Get data for current job to display $query = mysql_query("SELECT ...Job Details..."); $row = mysql_fetch_object($query); $subject = 'Work Order Request'; $email_message = '...Build Email... ...Include Job Details... '.getLineItems($order_id).' ...Finish Email...'; $headers = '...Create Email Headers...'; if (mail($row->primary_email, $subject, $email_message, $headers)) { $query = mysql_query("...log successful send..."); if (mysql_error()!="") { $message .= '...display mysqlerror()..'; } $message .= '...create success message...'; } else { $query = mysql_query("...log failed send..."); if (mysql_error()!="") { $message .= '...display mysqlerror()..'; } $message .= '...create failed message...'; } return $message; } // END send_email() function //Check supplier info $query = mysql_query("...get suppliers info attached to order_id..."); if (mysql_num_rows($query) > 0) { while($row = mysql_fetch_object($query)) { if ($row->primary_email=="") { $message .= '...no email message...'; } else if ($row->notification_email=="") { $message .= '...no notifications message...'; } else { $message .= send_email($order_id); } } } else { $message .= '...no supplier matched message...'; } print $message; ?>

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