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Showing 11-20 of 165 total

Simple Bluetooth Proximity

Following on from my earlier investigation into bluetooth proximity, I wanted something which returned a value which could be used to determine distance. The output from hcitool rssi ranges from 0 for close object down to -10 for far away objects.

rfcomm connect 0 00:12:D1:E6:57:BE


hcitool rssi 00:12:D1:E6:57:BE


Proximity Results:
-4 .. 0 : Bedroom - nearest to my bed
-4 .. -6 : Hallway
-8 .. -9 : Livingroom - on the computer desk
-9 .. -10 : Livingroom - nearest to the window
to linux shell bluetooth rfcomm hcitool proximity by jrobertson on May 20, 2008

WWAN Dialer

This script dials the built-in Verizon WWAN (mobile broadband) modem on my Thinkpad T61.

#!/bin/bash
#
# Dial the WWAN
#

hang_up () {
    echo 
    echo 'WWAN deactivated'
    echo
    exit
}

trap "hang_up" 2

echo 'Activating WWAN'
sudo modprobe -r airprime usbserial
sudo modprobe usbserial vendor=0x1199 product=0x0220
sudo modprobe airprime
sleep 0.5
sudo wvdial
to bash shell wwan verizon mobile broadband by jmcvetta on May 11, 2008

One-line web server in Ruby


# From: http://www.ntecs.de/blog/articles/2008/02/09/the-worlds-smallest-webserver
# Author: Michael Neumann
# ... point your browser to http://localhost:3125/etc/motd

ruby -rsocket -e 's=TCPServer.new(5**5);loop{_=s.accept;_<<"HTTP/1.0 200 OK\r\n\r\n#{File.read(_.gets.split[1])rescue nil}";_.close}'
to ruby unix bash shell web server socket TCPServer by ntk on Apr 23, 2008

Sort last 1000 shell commands by popularity

  history 1000 | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head
to bash shell by sikelianos on Apr 22, 2008

Bashy Perlness for generating Favicon text for OpenSearches

echo -n '<Image width="16" height="16">data:image/xicon,' ; perl -ne 's/(.)/"%".unpack("H2",$1)/egs; print' ~/Desktop/favicon.ico ; echo '</Image>'
to bash perl shell opensearch favicon by sikelianos on Apr 21, 2008

Changing the Bash prompt

The following shell command changes the bash prompt from this "james@cryton:~/projects/pear_housekeeping2/housekeeping$" to this "james@cryton> "
export PS1="\n\u@\H>"


I tried the above example on Ubuntu 7.10.

Reference:
Tip: Prompt magic [ibm.com]
Bash Prompt HOWTO [tldp.org]
to bash shell prompt export ps1 by jrobertson on Apr 11, 2008

Finding your WAN IP address

My server sits behind a NAT router, so finding out my public IP address is a non-trivial task. I can use curl to poll checkip.dyndns.org for my current address:
curl -s checkip.dyndns.org

The current IP check returns the information in this format: <html><head><title>Current IP Check</title></head><body>Current IP Address: 216.239.39.99</body></html>

Using cut, I can extract just the information that I need:
curl -s checkip.dyndns.org|cut -d ":" -f2|cut -d "<" -f1

That produces something a bit more readable: 216.239.39.99

-------------------------
This article snippet was copied from My sysadmin toolbox [linux.com] while I was googling for 'apt-cache search dyndns'.
to shell curl ip cut whatismyip dyndns wan fetch by jrobertson on Apr 11, 2008 1 Comments

Auto download pdf from www.estado.com.br

// This script downloads all pdfs from http://jpdf.estado.com.br
// Note, you must subscribe this newspaper in order to download the pdfs
// You must have wget installed

export http_proxy="http://10.1.1.1:8000"

cookie='sMkjwKA67H8FDcsZX5'
dd=`date +%d`
mm=`date +%m`
yyyy=`date +%Y`

index="http://jpdf.estado.com.br/menupdfi.php?E=SP&D=$dd/$mm/$yyyy&A=/estadopdf/sp/paginas/$yyyy/$mm/$dd/A01.pdf"

rm index.txt
./wget/wget -nc -k -S -U Mozilla --proxy --header "Cookie: User=$cookie " -O index.txt $index
if [ ! -f index.txt ]; then exit 1; fi

l=`gawk  'BEGIN {FS="\""} /option VALUE="\/estadopdf/ { print $2 }' index.txt`

for x in $l; do 

	# Ignora os classificados
	if [ ${x%01.pdf} -eq "Cl" ]; then continue; fi
	# Ignora o Guia
	if [ ${x%01.pdf} -eq "Q" ]; then continue; fi

	y=http://jpdf.estado.com.br${x%01.pdf}
	i=1
	flag=0
	
	while [ $i -lt 40 ]; do
		filename=`printf "%s%02d.pdf\n" $y $i`

		echo "=================================================================="
		echo $filename
		echo "=================================================================="
		./wget/wget -P estado -nc -k -S -U Mozilla --proxy --header "Cookie: User=$cookie " $filename
		if [ $? -eq 1 ]; then
			let flag=flag+1
			if [ $flag -gt 1 ]; then 
				flag=0
				echo "Proximo caderno..."; break;
			fi 
		fi
		
		sleep 1
		let i=i+1
	done
done
to shell wget pdf by adr1an0 on Mar 28, 2008

Adding new files to your github repository

Here is a set of instructions to apply new files to my github repository which is called projectx.

Before you start make sure you don't already have the repository name listed as a directory in the local current directory.

1) copy the remote repository to your local machine
syntax: git clone [uri] # eg. 
git clone git@github.com:jrobertson/projectx.git

1.5) cd into the newly created local repository eg.
cd projectx

2) copy the local file to the local repository directory
eg. 
cp ../projectx2/feed.rb .

3) add the local files to the local repository
syntax: git add [file] # eg. 
git add feed.rb

4) Inform the git system that you have completed the required changes for this session.
git commit -a # add a message associated with this file revision

5) copy the new local repository files back to the remote repository.
git push # updates the changes back to the server

Note: The text with the square-brackets should be replaced with your own values.

Reference: A tour of git: the basics [cworth.org]
to shell code git projectx github instructions by jrobertson on Mar 25, 2008

Twitter and Jaiku from the command line

The following instructions make it easy to post to Twitter and Jaiku from the command line. The instructions were copied from the article "Ubuntu Unleashed: Howto Twitter From the Command Line in Ubuntu!" [ubuntu-unleashed.com] and modified to post via Rorbuilder's ProjectX API.

sudo apt-get install curl

sudo gedit /usr/bin/jaitwit

Now Paste this in gEdit and simply replace "YourUsername" with your username and "YourPassword" with your twitter passwd, then replace the Jaiku variables (YourUsername, YourPassword, YourCity, YourAccessKey) and ctrl-s to save, then alt-F4 to exit!
curl http://rorbuilder.info/api/projectx.cgi?xml_project=%3Cproject%20name=%22micro_blog%22%3E%3Cmethods%3E%3Cmethod%20name=%22post2jaiku%22%3E%3Cparams%3E%3Cparam%20var=%22user%22%20val=%22YourUsername%22/%3E%3Cparam%20var=%22msg%22%20val=%22`echo $@|tr ' ' '+'`%22/%3E%3Cparam%20var=%22location%22%20val=%22YourCity%22/%3E%3Cparam%20var=%22apikey%22%20val=%22YourAccessKey%22/%3E%3C/params%3E%3C/method%3E%3Cmethod%20name=%22post2twitter%22%3E%3Cparams%3E%3Cparam%20var=%22user%22%20val=%22YourUsername%22/%3E%3Cparam%20var=%22msg%22%20val=%22`echo $@|tr ' ' '+'`%22/%3E%3Cparam%20var=%22password%22%20val=%22YourPassword%22/%3E%3C/params%3E%3C/method%3E%3C/methods%3E%3C/project%3E -o /dev/null
echo Message Sent!

Then chmod for exec privileges:
chmod +x /usr/bin/jaitwit

Then from the CLI type jaitwit followed by your message.
jaitwit "message here without the quotes"
to linux shell curl command line ubuntu twitter jaiku projectx gedit by jrobertson on Mar 21, 2008
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Showing 11-20 of 165 total