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Volume indicator not working after xubuntu 13.10 upgrade

xubuntu-logo-icon-largeQ. My volume indicator is broken after the upgrade to Xubuntu 13.10. The sound still works.

 

A. This is a known bug, but can be easily fixed:

 

In a terminal window, run: 

sudo nano /usr/share/dbus-1/services/indicator-sound.service

Modify the line:

Exec=/usr/lib/x86_64-linux-gnu/indicator-sound/indicator-sound-service

to 

Exec=/usr/lib/indicator-sound-gtk2/indicator-sound-service

Friday, 18 October 2013 13:00
 

Force Linux reboot

This happens quite often - a file-system hangs and doesn't respond to "reboot" commands. Here's how to force it to restart - on the command line, type the following:

echo 1 > /proc/sys/kernel/sysrq
echo b > /proc/sysrq-trigger

Thursday, 03 October 2013 19:44
   

How to install wallpapers from older ubuntu releases?

ubuntu-logoQ. I would like to install wallpapers from older releases of Ubuntu, how do I go about doing so?

 

A. The process is simple. You can run the following command on the terminal:

 

sudo apt-get install ubuntu-wallpapers-quetzal

Depending on the version you have (and wallpapers you'd like), replace quetzal with one of the following previous versions:

Tuesday, 01 October 2013 10:34
   

Broken or missing icons in Windows 7/8

Q. Some of my Windows icons have disappeared and look like the default application icon. How can I fix this?

Here's an example of what it looks like:

windows 7 broken icon

A. This happens because the icon cache gets corrupted. There are several ways to fix this:

Wednesday, 01 May 2013 11:18
   

Redirect all except one directory in Apache

Q. I would like to redirect all but one directory in Apache. How do I do that?

A. The process is very simple, using mod_rewrite:

Let's say that "directory1" is what you would like to continue using and everything else is to be redirected:

RewriteCond $1 !^directory1
RewriteRule (.*) http://www.example.com/$1 [R=301,L]
Tuesday, 16 April 2013 11:41
   

List serial number of USB device

Q. Is there a way to under Linux to find out the Serial number of a device plugged into the system?

A. Yes, there is a simple command:

lsusb -v

This will produce a long output, so it's best to pipe it into a "more" or just a text file.

Monday, 08 April 2013 13:25
   

Postfix and Clam AV

It's been a while since we've posted something and a lot of stuff piled up. At the day and age of MS Exchange and cloud hosting, there are still instances when you'd like to run your own email server. Postfix being the popular choice, we present here are simple steps to enable ClamAV to scan your incoming emails (Ubuntu is used as an example in this case).

First, a short description of the steps that the mail will take:

Incoming mail → 25:postfix → 10026:clamav → 10025:postfix → Delivery to user

Installation steps are as follows:

1) download and install ClamAV

apt-get install clamsmtp clamav-freshclam
Monday, 08 April 2013 08:58
   

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