In order to use this script, you need to do certain things in advance –

1. Download youtube-dl, a script which allows you to download videos

https://github.com/rg3/youtube-dl

2. Install ffmpet: an audio/video conversion tool.
Ubuntu users can run the following commands –

  apt-get install ffmpeg libavcodec-extra-53

Note: More details can be found here.

Usage Example: –

 ./musicdownloader.sh http://www.youtube.com/watch?v=8tHu-OwzwPg BereketMengstead-mizerey.mp3

#!/bin/bash

downloader=`which youtube-dl`
ffmpeg=`which ffmpeg`
bitrate=192000

ARGC=$#
LINK=$1
FILENAME=$2
SAVEDFILE=$(basename $0)_mymusic123.mp4

if [ $ARGC -ne 2 ]; then
  echo "Usage: $(basename $0) url-link output-file"
  echo "Example: $(basename  $0)  http://www.youtube.com/watch?v=fQZNiMckKbI Azmari-ethio01.mp3"
  exit
fi

$downloader -f 18 $LINK -o $SAVEDFILE  &&  $ffmpeg -i $SAVEDFILE -f mp3 -ab $bitrate -vn $FILENAME

if [ $? -eq 0 ];
then
 echo "File saved in " $FILENAME
 rm $SAVEDFILE
fi

Eritrean music , Tigrigna music.

A link for Internet Radio – mainly Eritrean and Ethiopian Tigrigna music. Some Amharic too.

http://linuxfreelancer.com:8000/listen.pls?sid=1

Link here.

How to search Internet radio channels –

1. Go to shoutcast.com
http://www.shoutcast.com/

2. Search using a key phrase

http://www.shoutcast.com/Internet-Radio/eritrean

http://www.shoutcast.com/Internet-Radio/ethiopian

Tag – Eritrean music.

Recently I was trying to download numerous files from a certain website using a shell script I wrote. With in the script, first I used wget to retrieve the files, but I kept on getting the following error message –

HTTP request sent, awaiting response... 403 Forbidden
2012-12-30 06:17:45 ERROR 403: Forbidden.

Then hoping that this was just a wget problem, I replaced wget with curl. It turned out that Curl would actually create a file with the same name as the one being download, but to my surprise the file was not downloaded. Instead, it contained an html file with 403 Forbidden message.

403 Forbidden
Forbidden


You don't have permission to access /dir/names.txt on this server.


What was surprising is that I could download the files using Firefox, Internet Explorer, elinks and even text based browser ‘lynx’. It seems that the website was blocking access from client browsers with certain ‘User-Agent’ header field. So the trick was to simply modify the User-Agent to a ‘legitimate’ one. Both curl and wget support the altering of User-Agent header field. You can use below commands to change the User-Agent parameter –

USER_AGENT="User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12"

wget --user-agent="$USER_AGENT" -c http://linuxfreelancer.com/status.html

curl -A "$USER_AGENT" -O http://linuxfreelancer.com/status.html

In addition to wget or curl, a much easier to use CLI HTTP client httpie can be used. Passing custom HTTP headers is intuitive using httpie, installation and usage details can be accessed here. Modifying the User-Agent header using httpie is shown below –
USER_AGENT="User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12"
http http://linuxfreelancer.com/ "$USER_AGENT"

All commands –
USER_AGENT="User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12"
wget --user-agent="$USER_AGENT" -c http://linuxfreelancer.com/status.html

curl -A "$USER_AGENT" -O http://linuxfreelancer.com/status.html

http http://linuxfreelancer.com/ "$USER_AGENT"




View all posts in this blog – https://linuxfreelancer.com/all-posts

      

Amazon provides extensive tools to manage virtual machines hosted on Amazon web services(AWS). It is very easy to launch VMs, and a lot easier to destroy or terminate VMs! It might be unintentional in the later case, with just one mis-click and a second confirmation you could end up terminating a critical production server. There is now way of bringing back a terminated VM in AWS. Once it is gone, it is gone forever.

So what steps should you follow to prevent unintended data loss?

1. Make sure the virtual machines are properly labelled in the EC2 dashboard – under “Name”. This can be done by simply right clicking a VM, and selecting “Add/Edit Tags”. If you have so many servers without proper tags, you might unintentionally terminate the wrong server.

2. Enable Termination Protection – Right click on the VM and select “Termination Protection”. Make sure the Termination protection is Enabled. If by any chance you decide to terminate your VM, you have to disable the termination protection on this option, and then go back to the dashboard to terminate your VM.

Download audio in mp3 format from Youtube

Got your favorite youtube video and yet you don’t have it in an audio format such as mp3 to play it offline? With open source tools, you can grab that video and convert it to mp3 at no cost.

Prepare a directory for downloading mp4 format files from youtube.

mkdir /home/youtube

Tools you need

1. youtube-dl: A python script to download videos from youtube – http://rg3.github.io/youtube-dl/download.html

Using curl –

sudo curl -L https://yt-dl.org/downloads/latest/youtube-dl -o /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl

Using wget –

sudo wget https://yt-dl.org/downloads/latest/youtube-dl -O /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl

Using pip –

sudo pip install --upgrade youtube_dl

2. ffmpeg: an audio/video conversion tool.

 apt-get install ffmpeg libavcodec-extra-53

Procedure
1. Make the youtube link ready for download and then download the mp4 using youtube-pl script
2. Use ffmpeg tools to convert mp4 to mp3

Sample download

Let us download the following youtube link

youtube-dl -f 18 -t http://www.youtube.com/watch?v=dAG2qxvYwsY

options: -f is for file format of the youtube video (check youtube-dl documentation for the whole list)

Next, convert it to mp3

ffmpeg -i Freselam_Mussie_s_Tsinih_Zeytibli-dAG2qxvYwsY.mp4 -f mp3 -ab 192000 -vn Freselam_Mussie_s_Tsinih_Zeytibli-dAG2qxvYwsY.mp3

options: -i for input
         -f for output file format
         -ab for bit rate
         -vn for Disable video recording.

References –

http://rg3.github.com/youtube-dl/

http://rg3.github.io/youtube-dl/download.html

You are being watched!

According to its website, Carrier IQ claims that its software is deployed in more than 141 millions handsets. Many of the major carriers and handset makers preinstall Carrier IQ on the handsets they sell, including AT&T, T-mobile, Apple, HTC etc. The software is nothing different from a rootkit, it records all keystrokes you make on your handset, the sites you visit, the sms messages you send and receive, and many more.

For more info –

http://www.engadget.com/2011/12/01/carrier-iq-what-it-is-what-it-isnt-and-what-you-need-to/