Saturday, August 22, 2015

Convert mp4 file/s to mp3 using avconv

Hello All,

Avconv is alternative to ffmpeg. Avconv is a very fast video and audio converter that can also grab from a live audio/video source. It can also convert between arbitrary sample rates and resize video on the fly with a high quality polyphase filter.

conversion of mp4 file/s to mp3 by using avconv

avconv -i input.mp4 -vn -f mp3 output.mp3

Enjoy conversion to mp3... :-)

Saturday, July 4, 2015


Wireless driver installation for Toshiba Tecra z40.

 sudo apt-get install linux-headers-generic build-essential


tar -zxvf backports-3.19-rc1-1.tar.gz

cd backports-3.19-rc1-1

make defconfig-iwlwifi


sudo make install

And you will need firmware


tar zxvf iwlwifi-7260-ucode-

sudo cp iwlwifi-*.ucode /lib/firmware


If you realize that your wifi doesn't work in the future, it is likely that a kernel update occured and you will need to

cd backports-3.19-rc1-1

make clean

make defconfig-iwlwifi


sudo make install

Thursday, January 23, 2014

Ubuntu 10.04 ethernet controller issue - Dell Optiplex

After the installation of Ubuntu 10.04 on Dell optiplex 790, we found that the Ethernet controller is not working on it.

After some research I found that there are no Ethernet driver e1000e was installed as there was a bug in that & resolved very soon.

The driver e1000e installation steps as follows.

  1. Download the driver e1000e.
  2. unzip the package.
  3. Make a cd to the src folder inside the e1000e folder.
  4. execute make command before that ensure gcc installed.
  5. execute make install command.
  6. execute modprobe e1000e to add the module.
  7. Now you should see the network should be working fine.
 We found this issue only in 10.04 as we were using this  distribution version frequently. We have only tested this on Ubuntu 10.04.

Happy Networking...Enjoy... :)

Sunday, March 4, 2012

Backup SVN Repository

my $svn_repo = "/svn/reponame";
my $bkup_dir = "/var/backups/svn_backup/backup_reponame";
my $bkup_file = "reponame_backup-";

$bkup_file = $bkup_file . `date +%Y_%m_%d_%H_%M`;
chomp $bkup_file;
my $youngest = `svnlook youngest $svn_repo`;
chomp $youngest;

my $dump_command = "svnadmin -q dump $svn_repo > $bkup_dir/$bkup_file";
print "\nDumping Subversion repo $svn_repo to $bkup_file...\n";
print `$dump_command`;
print "Backing up through revision $youngest... \n";
print "\nCompressing dump file...\n";
print `bzip2 -9 $bkup_dir/$bkup_file\n`;
chomp $bkup_file;
my $zipped_file = $bkup_dir . "/" . $bkup_file . ".bz2";
print "\nCreated $zipped_file\n";

Sunday, May 1, 2011

Reliance Netconnect and Ubuntu / Debian

Hello Readers,

Oh!! Yeah, Finally reliance netconnect connected & started working on ubuntu 10.04 with easy simple steps followed to configure it.

  • Search the package usb-modeswitch & usb-modeswitch-data
root@cyclotron:~# apt-cache search usb-modeswitch usb-modeswitch-data

  •  Install the package usb-modeswitch & usb-modeswitch-data
root@cyclotron:~# apt-get install usb-modeswitch usb-modeswitch-data

  • Now follow the easy installation steps to get connected.
  • Systems --> Preferences --> Network Connection
  • Select Mobile Broadband --> Add --> Select your provider country --> Select your provider --> Confirm Settings
  • Now Enter the Phone Number in the Username box & Phone Number in the Password and Apply the settings.

Now you should get connected to the Reliance Netconnect. 

Enjoy Netconnect. :-)

Tuesday, March 29, 2011

How To : Install firefox 4 (stable) on Ubuntu

Hello Folks,

If you want to install & enjoy firefox 4 on your Ubuntu Machine / Debian Machine follow the simple steps.

  • apt-get remove firefox 
  • dpkg --purge firefox
Now add the below Firefox Stable PPA :-
sudo add-apt-repository ppa:mozillateam/firefox-stable

  • apt-get update
  • apt-get install firefox
The installation may take sometime, After the installation you check the new Firefox 4 installed and also you download Firefox 4.

Enjoy the browsing with new Firefox 4 with great features in it. :-)

Tuesday, March 22, 2011

Pure-ftpd-mysql : Unable to start a standalone server

Hello All,

After restarting ftp server found that the ftp server is not running, Checked the system log of the server & found the following error.

pure-ftpd: (?@?) [ERROR] Unable to start a standalone server: [Invalid argument]

In debian etch 4, The pure-ftpd-mysql does not have link to pure-ftpd from pure-ftpd-mysql by default. Apply the link by force and restart the service.

ln -sf /usr/sbin/pure-ftpd-mysql /usr/sbin/pure-ftpd

Enjoy. :-)