jQuery bind function:
$ ('#searchbox input').bind('keypress', function(e) {});
For detecting the ‘enter’ key pressed, write in script,
var code = (e.keyCode ? e.keyCode : e.which);
if(code == 13) { //Enter keycode
//Do something
}
Month: November 2011
Find version of swftools installed in Linux
try the following command.
$ pdf2swf -V
pdf2swf – part of swftools 0.8.1
Linux: How to split large files into several parts
HJSplit
HJSplit for Linux is a freeware file splitter for Linux with full graphical user-interface.
Download ‘HJSplit’ from Freebytesoftware
Unix Split command
$ split -l 1000 my_file.txt # Split the file named my_file.txt into several files with 1000 lines
$ split -b n my_file.txt # Split a file into pieces n bytes in size.
Create, write and read a file and also print the first line of a file in ruby
Create a file: Open a file in write mode
ruby-1.9.2-p290 :058 > f = File.open(“my_file.txt”, “w”)
=>
Write something to that file
ruby-1.9.2-p290 :059 > f.write(“This is the first line of my file\n”)
=> 34
Close the file
ruby-1.9.2-p290 :060 > f.close
=> nil
Open the file for reading
ruby-1.9.2-p290 :061 > f = File.open(“my_file.txt”, “r”)
ruby-1.9.2-p290 :062 > f.read
=> “This is the first line of my file.\n”
Print the first line of a file
ruby-1.9.2-p290 :063 > lines = IO.readlines(“my_file.txt”)
ruby-1.9.2-p290 :063 > puts lines.first
This is the first line of my file.
A useful link about ruby File manupulation is given below
Open ods, xls, xlsx files in ruby by using ‘roo’
Install ‘roo’ gem
$ sudo gem install ‘roo’
take the ruby console
$ irb
for example take an xlxs file and try to open
ruby-1.9.2-p290 :003 > require ‘roo’
if you get an error like
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:6: warning: already initialized constant VERSION
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:7: warning: already initialized constant LIBPATH
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:8: warning: already initialized constant PATH
LoadError: no such file to load — zip/zipfilesystem
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo/openoffice.rb:3:in `’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:71:in `’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from (irb):3
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/bin/irb:16:in `’
ruby-1.9.2-p290 :004 >
Then install the ‘rubyzip2’ gem
$ gem install rubyzip2
and open the file
ruby-1.9.2-p290 :003 > file = Excelx.new(“/home/prescience-toshiba/Documents/abhilash.raw.xlsx”)
output:
=> {[1, 1]=>”Name”, [1, 2]=>”Email Id”, [1, 3]=>”Alternate Number”, [1, 4]=>”Date of Birth”, [1, 5]=>”Mobile No.”, [1, 6]=>”Functional Area”, [1, 7]=>”Area of Specialization”, [1, 8]=>”Industry”, [1, 9]=>”Resume Title”, [1, 10]=>”Key Skills”, [1, 11]=>”Work Experience”, [1, 12]=>”Current Employer”, [1, 13]=>”Previous Employer”, [1, 14]=>”Current Salary”, [1, 15]=>”Level”, [1, 16]=>”Current Location”, [1, 17]=>”Preferred Location”, [1, 18]=>”Course(Highest Education)”, [1, 19]=>”Name”, [1, 20]=>”Email Id”, [1, 21]=>”Alternate Number”, [1, 22]=>”Date of Birth”, [1, 23]=>”Mobile No.”, [1, 24]=>”Functional Area”, [1, 25]=>”Area of Specialization”, [1, 26]=>”Industry”, [1, 27]=>”Resume Title”, [1, 28]=>”Key Skills”, [1, 29]=>”Work Experience”, [1, 30]=>”Current Employer”, [2, 1]=>”Rahel Robert”, [2, 2]=>”rtrobert@yahoo.com”, [……………………..
Ruby gem roo error: LoadError: no such file to load — zip/zipfilesystem
ruby-1.9.2-p290 :003 > require ‘roo’
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:6: warning: already initialized constant VERSION
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:7: warning: already initialized constant LIBPATH
/home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:8: warning: already initialized constant PATH
LoadError: no such file to load — zip/zipfilesystem
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo/openoffice.rb:3:in `’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/gems/ruby-1.9.2-p290@rails31rc/gems/roo-1.10.0/lib/roo.rb:71:in `’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require’
from (irb):3
from /home/prescience-toshiba/.rvm/rubies/ruby-1.9.2-p290/bin/irb:16:in `’
ruby-1.9.2-p290 :004 >
Instead of roo do
ruby-1.9.2-p290 :004 > require ‘roo/excel’
This works fine. If you want zip gem then install it.
$ gem install rubyzip2
Then do
ruby-1.9.2-p290 :001 > require ‘roo’
=> true
