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• List Squid's internal ip:port to external ip:port mapping table

  - by joshperry

  I'm assuming that squid keeps a list of internal ip:port that a request is made on and the matching external ip:port that the request is fulfilled with. In the case of a long transfer, such as a file download, it would be nice to be able to see which internal ip:port is downloading the file. I am able to see the traffic and get the external ip:port that squid is using easily with tcpdump or iptraf but I can't find a way to map this back to an internal ip:port.

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• View an XML file without any carriage returns or other text formatting as a tree

  - by justinhj

  I've opened an XML file in emacs, and it's the output from a web request so it's just in one long line. Can I execute a command to format it into a tree structure?

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• Disadvantages of not having a swap partition

  - by Bo Tian

  I recently installed Ubuntu 10.04 on my laptop. Due to space constraint of the SSD, I did not set a swap partition for the OS, and I have 1.5GB of RAM. There's a warning during installation, but I think it's not a big deal since everything went smoothly. For the long term, would there be any drawbacks of not having a swap partition?

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• Pros and Cons of Creating an Internal Cerificate Authority

  - by Chad

  What are the pros and cons of spinning up an internal certificate authority (primarily Windows 2003 CA)? We have the need to encypt server-server traffic on a project that has 20+ certificates. We could buy certs from Verisign, but I was thinking that an internal CA might be a better long term solution. So I was looking to the community to provide a pros/cons list of what we might gain (or lose) by hosting our own CA? Thanks in advance for the help.

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• Ubuntu 8.10 and Ubuntu 9.10 in dual boot ?

  - by Arkapravo

  Hi Is it possible to have Ubuntu 8.10 as second (or third) boot with Ubuntu 9.10 as first boot ? I have not been able to get it to work, may be issues with Grub. PS : Don't ask me why I want this sort of dual boot, long story !

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• Is DHCP lease expriring years from now okay?

  - by sharptooth

  I'm reviewing Azure web role logs and there's output from ipconfig /all IPv4 Address. . . . . . . . . . . : 10.61.145.37(Preferred) . Subnet Mask . . . . . . . . . . . : 255.255.254.0. Lease Obtained. . . . . . . . . . : Monday, September 24, 2012 12:26:00 PM. Lease Expires . . . . . . . . . . : Thursday, October 31, 2148 6:55:12 PM. you see, the lease expires in year 2148 but my VM will likely not run for more than one month - when I deploy the new version of my code I first deploy it to new VMs, then switch traffic, then release the new VMs. In general such usage pattern is normal - VMs typically live from several dozen minutes to several weeks on Azure. I suspect the lease that long will cause problems on the internal Azure network sooner or later. Is such long DHCP lease okay or is it likely a misconfiguration?

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• Exposing server uptime a potential security vulnerability?

  - by Edward Mazur

  I run a browser-based game and as part of a page with a bunch of game statistics, I have the server uptime listed. It's currently at 177 days and so someone mentioned to me that I shouldn't do this because a long uptime indicates the kernel is old and therefore missing security updates. This certainly sounds logical, but I searched around and couldn't find any evidence to support it. So I'm just wondering, is this indeed something I should not have exposed?

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• Is one type of options to ps preferred?

  - by Jim

  GNU ps supports BSD-style options, UNIX-style options, and GNU long options. Is using one of these types (in scripts and at the command line) preferred over the others? I get the impression from the manpage that the functionality of the option styles does not overlap completely.

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• Amazon EC2 Ami recommendations for free tier?

  - by Console

  Amazon web services recently introduced a free tier, where you basically get free stuff to try out AWS and run tiny sites and projects. Basically it's free as long as you remain below a certain limit of bandwidth, disk storage etc. Since going over the limits can quickly become quite expensive (for a hobbyist) I would like some recommendations or suggestions about which AMI's I can run on the free tier, for the purpose of trying out Ruby on Rails and/or Django.

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• saving excel files to file paths or directories with special characters

  - by benhc911

  I am unable to get excel 2010 beta to save to a directory which contains square brackets. I have to save elsewhere and copy in. Is there any workaround? Was this a problem with older versions? I realize that I could manually change the directory names, but I didn't want to forgo a long standing organization scheme for the sake of one program if possible to avoid the problem.

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• how do i computationally slice an audio file into small samples?

  - by user26700

  i need to cut audio files into small samples of even length. What i need is basically a batch processor for audio which does it, and names the slices numerically. i'm on os x and found Audio Splitter, the shortest possible sample length with it is 1 second though, too long for my purpose. Anyone know an alternative?

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• Capture STDOUT/STDERR of Windows Applictation

  - by Mark Roddy

  I am using an open source application (conkeror) which is configured via a file containing javascript. Any issues with the javascript is printed to the console. This is fine under Linux as all the information is shown as long as the it is started from a shell. However, under Windows none of the information is show even when started from a shell. Is there a way to make this information displayed in the shell or to capture it in say a file?

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• Why does CPU processing time matter when compared to real wall clock time?

  - by PeanutsMonkey

  I am running the command time 7zr a -mx=9 sample.7z sample.log to gauge how long it takes to compress a file larger than 1GB. The results I get are as follows. real 10m40.156s user 17m38.862s sys 0m5.944s I have a basic understanding of the difference but don't understand how this plays a role in the time in takes to compress the file. For example should I be looking at real or user + sys?

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• excel - generate a username from a full name field

  - by mheavers

  I'm trying to generate a username using a single name field in excel which has the person's first name and last name. I'm open to what the username would be, as long as its intuitive for the user. The name fields can be tricky, as the data looks like this: Albert Abongo (2 names) Stephen Michael Essuah Ackah (4 names) Alhaji Iddrisu Abdul-KArim (3 names) I guess my ideal usernames for these people would be aabongo sackah aabdul-karim

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• Personal cloud storage options

  - by rhaddan

  I'm looking for some personal cloud storage options. My biggest concern about moving to a hosted storage solution is the long-term viability of the provider. Has anyone used a cloud service that you're crazy about? I'm a Mac user, so I need to have something that will work on the Mac OS and ideally the iPhone as well.

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• Enforce user time restrictions to log out or off from Windows 7

  - by javamonkey79

  How can I limit the time spent on the computer or force a log out from a Windows 7 machine? I used to use Windows Steady State to limit users (kids) from being on too long but SteadyState does not work with Windows 7 Home Premium and is discontinued. Is there a way to set this up in Windows 7 where it will kick off a user after a set time? Or perhaps there's an alternative program that can help limit the time one user is at the computer.

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• How can I manually put a Macbook Pro to hibernate without going to sleep mode first?

  - by holiveira

  I recently got my first Mac computer, a late 2009 Macbook Pro model. I used to put my previous notebook (running windows 7) to hibernate directly in order to save battery but I can't do the same in Mac Os. From what I can tell Mac Os only hibernate a notebook when battery dies after a long sleeping period. Is that a way to manually put a Macbook to hibernate?

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• How to host many websites using same public IP address but different domains.

  - by Roberto Sebestyen

  I know how to configure one IIS instance to run many websites using the same public ip address, but different domain names (As long as I have control over the domains). But how can you configure many IIS servers running on different virtual machines in the same network, to host websites using the same public IP addres, but different domain names? Normailly in IIS under the website you can set the headers to which the website will respond to. but what if that website is on a different machine?

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• Hard Drive Light Emulator

  - by ProfKaos

  I've just got a new Dell Inspiron, and I'm a little disconcerted without the reassurance of a flashing hard drive light, especially with long installs. Is there something that can reveal HDD activity onscreen, e.g. in the system tray?

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• terminal mail delivery delay in mac os

  - by cmaughan

  I'm using mail from Mac OS terminal to send the results of a database query to me via email. Most of the time it works, but sometimes there is a long delay before the mail arrives (often when another similar script is run). It looks like there is some kind of send queue, but I can't find any docs mentioning this. Is there something I need to do to flush mail from the terminal?

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• less -Sr colourful.log How to view colourful log in less?

  - by Vi

  Both less -r (preserve terminal control sequences) and less -S (chop long lines) work well alone. But using them together breaks things. It chops too late and it wrecks the next line. Reducing COLUMNS environment variable is no op: (man less) But if you have a windowing system which supports TIOCGWINSZ or WIOCGETD, the window system's idea of the screen size takes precedence over the LINES and COLUMNS environment variables. How to view colourful logs with less? Resoved before asked: less -SR

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• How To Troubleshoot Excess Time From Connect to First Byte?

  - by Gaia

  I measured load times for a wordpress 2.9.2 install on apache 2.2.3 and I was intrigued by the long periods between connect and first byte for the css and image files. Load Average is 0.0, 0.0, 0.0 and there are 150MB free RAM on the VPS. Pingdom results are at http://imagebin.ca/img/6UaiOU.png How do I gain insight into the possible causes of this problem and how would I troubleshoot it? Thanks

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• Is there a way to inspect if php script is running or timed out?

  - by serg555

  I am running some php installation script from a browser and it's been running for a quite long time. Is there a way to check if it is still running on a server or timed out already? The browser is still showing loading spinner, but it is not a reliable progress indicator I suppose. (Apache webserver under Linux)

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• Is it possible to disable the removal of apps from the iPod Touch?

  - by Antony

  My 4 year old son likes to play games on my wife's iPod touch and has a 'cute' habit of deleting apps via long-press on the icon and then pressing the red X. Is it possible to disable this feature?

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• weird problem with bash

  - by Arcath

  I recently changed my .bashrc and tweaked how my PS1 looks, but now it has a very wierd problem, before the end of the line in terminal (about 2 3rds of the way in) it jumps back to the begining of the line like so: e before itarcath@Highgate][~/.gconf/apps/gedit-2/preferences] how long can a command b My first though was was that it wasnt getting the terminal size properly but tput cols returns the correct value. My.bashrc: http://github.com/Arcath/.Files/blob/master/dotfiles/.bashrc

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