Another way to print the alphabet

str = “puts \”a\”"

0.upto(25) {
eval(str)
str.next!
}

Great article

I just want to share this great article.

http://www.ibm.com/developerworks/linux/library/l-spider/

Scraping google images [web harvesting] | quick way to get images from google

The code is pretty much self-explanatory. If you have questions don’t hesitate to write them.


require 'rubygems'
require 'mechanize'

agent = WWW::Mechanize.new
page = agent.get 'http://images.google.com/'

form = page.forms[0]

form['q']='obama' #type here what you wanna get

page = agent.submit form

uri = page.links[18].uri.to_s #gets the url
uri = uri[15..uri.index('&')-1]

agent.get(uri).save_as((File.basename(uri)).split("?")[0]) # saves the picture to script's directory
puts 'done'


Check your gmail account for unread letters and print the first ten letters’ subjects

I recently came across this gmail scraping tutorial and got inspired to try it myself. Here is my modified version of the code:


require 'rubygems'
require 'mechanize'

agent = WWW::Mechanize.new
page = agent.get 'http://gmail.com'

form = page.forms[0]

form['Email'] = '***email***'
form['Passwd'] = '***password***'

page = agent.submit form

page = agent.get page.meta[0].href #redirection

puts page.links[15]
puts page.links[20]
puts page.links[27..37]


Tk widget code:


require 'tk'
require 'rubygems'
require 'mechanize'

agent = WWW::Mechanize.new
page = agent.get 'http://gmail.com'

form = page.forms[0]

form['Email'] = '***email***'
form['Passwd'] = '***password***'

page = agent.submit form

page = agent.get page.meta[0].href #redirection

string = page.links[15].to_s + page.links[20].to_s + page.links[27..37].to_s

root = TkRoot.new # tk start

text = TkText.new(root) { width 100; height 100; font TkFont.new('helvetica 13 bold') }.pack("side"=>"left")
text.insert('end', string)

Tk.mainloop # end tk


Twit easy and quickly without web browser with simple ruby script

I like doing everything in the Linux Terminal. That is why i made a simple script that enables me to twit directly from my computer without opening Mozilla and logging into Twitter. Here it is:


require 'rubygems'
require 'mechanize'

agent = WWW::Mechanize.new
page = agent.get 'http://twitter.com/login'

form = page.forms[1]

form["session[username_or_email]"] = '***type your username or email here***'
form["session[password]"] = '***type your password here***'

page = agent.submit form

form = page.forms[1]

puts "Logged in"

form["status"] = gets.chomp
page = agent.submit form


The only problem is that you don’t know the exact number of available symbols remaining. This is the final code for the simple twitting widget i made. I used Ruby/Tk, because it is very easy to learn, yet powerful. It counts symbols


require 'tk'
require 'rubygems'
require 'mechanize'

agent = WWW::Mechanize.new # login start
page = agent.get 'http://twitter.com/login'
form = page.forms[1]
form["session[username_or_email]"] = '***type your username or email here***'
form["session[password]"] = '***type your password here***'
page = agent.submit form
form = page.forms[1] # login end

root = TkRoot.new # tk start

@text = TkVariable.new

event = TkEntry.new(root, 'textvariable' => @text) do
width 130
font TkFont.new('helvetica 10') #this is optional
pack
end

lbl = TkLabel.new(root) do
text '160'
pack
end

event.bind("KeyPress") {lbl.configure('text'=> (160-@text.value.length).to_s ) }

update = TkButton.new(root) do
text "Update"
pack
end

update.command do
form["status"] = @text.value
page = agent.submit form
end

TkButton.new(root) do
text "Cancel"
command { exit }
pack
end

Tk.mainloop # end tk


Have fun! ^_^