rename files with ruby

#!/usr/bin/env ruby

# This script renames files with white spaces with

# files with underscores in the current working directory.

require 'fileutils'

Dir.glob("*\ *").each do |original_file|

underscore_file = original_file.gsub(" ","_")

FileUtils.mv(original_file,underscore_file)

puts "Renamed: #{original_file} => #{underscore_file}"

end

How to check md5sum on OSX

[ 12:57:03 user@machine:~/Downloads/tech_apps ]

(0.42 0.49 0.45)$ md5 CentOS-5.6-i386-bin-DVD.iso

MD5 (CentOS-5.6-i386-bin-DVD.iso) = 181142a5845586579d5d4d96e43a4827

got to learn the amazon api

http://incubator.apache.org/libcloud/

Velocity 2011 Tracks

06/14/2011 - 6/16/2011

• Automation strategies
• Cloud computing: the good bits
• JavaScript speedups
• Storing and managing big data: NoSQL, Hadoop
• Metrics and monitoring
• Building and supporting the business case

Pico visudo?

Had an issue with visudo, every time i

$sudo visudo

pico/nano would start up - WTF.

fix: .bashrc

export EDITOR=/usr/bin/vim

alias visudo='sudo -E visudo'