lxneng

class String
  def to_safe_uri
    self.strip.downcase.gsub('&', 'and').gsub(' ', '-').gsub(/[^\w-]/,'')
  end
end

lxneng

def change_password?(passwords)
    self.password_confirmation = passwords[:password_confirmation]
    self.verify_password = passwords[:verify_password]
    unless verify_password == unencrypted_password
      errors.add(:password, "is incorrect")
      return false
    end
    unless passwords[:new_password] == password_confirmation
      errors.add(:password, "does not match confirmation")
      return false

lxneng

#!/bin/sh
#
# init.d script with LSB support.
#
# Copyright (c) 2007 Javier Fernandez-Sanguino <[email protected]>
#
# This is free software; you may redistribute it and/or modify
# it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2,
# or (at your option) any later version.

lxneng

#! /bin/sh
# chkconfig: - 58 74
# description: nginx is the Nginx daemon. 
# Description: Startup script for nginx webserver on Debian. Place in /etc/init.d and
# run 'sudo update-rc.d nginx defaults', or use the appropriate command on your
# distro.
#
# Author:  Ryan Norbauer
# Modified:     Geoffrey Grosenbach http://topfunky.com
# Modified:     David Krmpotic http://davidhq.com 

lxneng

## app/controllers/admin/users_controller.rb
def export_to_csv
  @users = User.all
  csv_string = FasterCSV.generate(:force_quotes => true) do |out|
    out << ['Email Address', 'First Name', 'Last Name', 'Mobile Phone', 'Gender']
    @users.each do |u|
      out << [u.email, u.first_name, u.last_name, u.phone_number, u.gender]
    end
  end
  send_data(csv_string,

lxneng

1. 插入ubuntu live光盘，选择安装
2. 一直到磁盘分区
3. 选择手动分区
4. 把/ /boot /swap等等都对应到原先安装的
5. 不要格式化
6. 确认保存时，点”确定”
7. 会跳出错误，说不能安装…，不予理会，选择继续
8. 直到回到Ubuntu安装菜单，选择安装grub

或者

lxneng

#push
rsync -avz -e ssh /some/small/directory/ [email protected]:/backup/destination/directory/
 
#pull
rsync -avz -e ssh [email protected]:/backup/destination/directory/ /some/small/directory/

lxneng

#使用expect
 
#!/usr/bin/expect -f 
#auto ssh login 
set timeout 30 
#set sshhost [lindex $argv 0]
spawn ssh -D 9527 [email protected]
expect "password:" 
send "password\r"
interact

lxneng

# -l 统计行数
# 不加参数的话，显示行数，字符数，文件大小
wc -l test.txt

lxneng

# install twisted
$ cd /usr/local/src
$ svn co svn://svn.twistedmatrix.com/svn/Twisted/trunk twisted
$ cd twisted
$ sudo python setup.py install

# install libxml2
$  cd /usr/local/src
$ wget ftp://xmlsoft.org/libxml2/libxml2-2.7.6.tar.gz
$ tar zxvf libxml2-2.7.6.tar.gz