import java.text.DecimalFormat;   
import java.text.NumberFormat;   
import java.text.SimpleDateFormat;   
import java.util.Calendar;   
 
public class Crack {   
//myeclipseBlue6.5破解,运行即可得到key  
    public static final void main(String[] args){   
        String id="nortan";   //这是指注册的名称  
        String num="999";   
        System.out.println(getSerial(id,"100",num,false));    
    }   
    public static String getSerial(String userId, String version,   
            String licenseNum, boolean selected) {   
        Calendar cal = Calendar.getInstance();   
        cal.add(1, 3);   
        cal.add(6, -1);   
        NumberFormat nf = new DecimalFormat("000");   
        licenseNum = nf.format(Integer.valueOf(licenseNum));   
        String verTime = selected ? (new StringBuffer("-")).append(   
                (new SimpleDateFormat("yyMMdd")).format(cal.getTime())).append(   
                "0").toString() : "-1312310";//这的时间是指注册到期时间，可以自己修改  
        String type = "YE3MB-";   
        String need = (new StringBuffer(String.valueOf(userId.substring(0, 1))))   
                .append(type).append(version).append(licenseNum)   
                .append(verTime).toString();   
        String dx = (new StringBuffer(String.valueOf(need)))   
                .append(   
                        "Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (http://www.loc.gov/copyright/legislation/dmca.pdf). Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.")   
 
                        .append(userId).toString();   
        int suf = decode(dx);   
        String code = (new StringBuffer(String.valueOf(need))).append(   
                String.valueOf(suf)).toString();   
        return change(code);   
    }   
 
    private static int decode(String s) {   
        int i = 0;   
        char ac[] = s.toCharArray();   
        int j = 0;   
        for (int k = ac.length; j < k; j++)   
            i = 31 * i + ac[j];   
 
        return Math.abs(i);   
    }   
 
    private static String change(String s) {   
        byte abyte0[] = s.getBytes();   
        char ac[] = new char[s.length()];   
        int i = 0;   
        for (int k = abyte0.length; i < k; i++) {   
            int j = abyte0[i];   
            if (j >= 48 && j <= 57)   
                j = ((j - 48) + 5) % 10 + 48;   
            else if (j >= 65 && j <= 90)   
                j = ((j - 65) + 13) % 26 + 65;   
            else if (j >= 97 && j <= 122)   
                j = ((j - 97) + 13) % 26 + 97;   
            ac[i] = (char)j;   
        }   
 
        return String.valueOf(ac);   
    }   
}

sudo apt-get install libsvn-java

-Djava.library.path=/usr/lib/jni

useradd username

sudo useradd -d /home/nortan -m nortan
sudo passwd nortan

voland@localhost:~$ls -la /home/nortan
total 20
drwxr-xr-x 2 nortan nortan 4096 2006-12-15 11:34 .
drwxr-xr-x 5 root root 4096 2006-12-15 11:37 ..
-rw-r–r– 1 nortan nortan 220 2006-12-15 11:34 .bash_logout
-rw-r–r– 1 nortan nortan 414 2006-12-15 11:34 .bash_profile
-rw-r–r– 1 nortan nortan 2227 2006-12-15 11:34 .bashrc

adduser username

voland@localhost:~$ sudo adduser nortan
Password:
Adding user `nortan’…
Adding new group `nortan’ (1004).
Adding new user `nortan’ (1004) with group `nortan’.
Creating home directory `/home/nortan’.
Copying files from `/etc/skel’
Enter new UNIX password:
Retype new UNIX password:
No password supplied
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
Changing the user information for nortan
Enter the new value, or press ENTER for the default
Full Name []: The Geek
Room Number []: 0
Work Phone []: 555-1312
Home Phone []: 555-1312
Other []:
Is the information correct? [y/N] y

whereis iptables

sudo apt-get install iptables

sudo iptables -L

sudo vim /etc/iptables.test.rules

*filter
 
# Allows all loopback (lo0) traffic and drop all traffic to 127/8 that doesn't use lo0
-A INPUT -i lo -j ACCEPT
-A INPUT -i ! lo -d 127.0.0.0/8 -j REJECT
 
# Accepts all established inbound connections
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
 
# Allows all outbound traffic
# You could modify this to only allow certain traffic
-A OUTPUT -j ACCEPT
 
# Allows HTTP and HTTPS connections from anywhere (the normal ports for websites)
-A INPUT -p tcp --dport 80 -j ACCEPT
-A INPUT -p tcp --dport 443 -j ACCEPT
 
# Allows SSH connections for script kiddies
# THE -dport NUMBER IS THE SAME ONE YOU SET UP IN THE SSHD_CONFIG FILE
-A INPUT -p tcp -m state --state NEW --dport 22 -j ACCEPT
 
# Now you should read up on iptables rules and consider whether ssh access 
# for everyone is really desired. Most likely you will only allow access from certain IPs.
 
# Allow ping
-A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT
 
# log iptables denied calls (access via 'dmesg' command)
-A INPUT -m limit --limit 5/min -j LOG --log-prefix "iptables denied: " --log-level 7
 
# Reject all other inbound - default deny unless explicitly allowed policy:
-A INPUT -j REJECT
-A FORWARD -j REJECT
 
COMMIT

sudo iptables-restore < /etc/iptables.test.rules

sudo iptables -L

iptables-save > /etc/iptables.up.rules

sudo vim /etc/network/if-pre-up.d/iptables

#!/bin/bash
/sbin/iptables-restore < /etc/iptables.up.rules

chmod +x /etc/network/if-pre-up.d/iptables

# groups
User_Alias  ROOT = user1, user2, user3
User_Alias  WEBMASTERS = user4, user5, user6
 
# commands
Cmnd_Alias  APACHE = /usr/local/sbin/kickapache
Cmnd_Alias  TAIL = /usr/bin/tail
Cmnd_Alias      SHUTDOWN = /sbin/shutdown
Cmnd_Alias      APT = /usr/bin/apt-get, /usr/bin/dpkg
 
# privileges 
ROOT        ALL = (ALL) ALL
WEBMASTERS  ALL = PASSWD : APACHE, TAIL
admin       ALL = NOPASSWD : /etc/init.d/apache

rails cron
cd cron
script/generate model my_model
vi config/database.yml (set the database username/password, and databases created in your environment)

namespace :cron do
  desc "Just what Date is it really"
  task(:dummy ){ p Date::today.to_s  }
end

rake -T cron
(in /Users/linda/example/cron)
rake cron:dummy  # Just what Date is it really

rake cron:dummy
(in /Users/linda/example/cron)
"2010-04-21"

class MyModel < ActiveRecord::Base
  def self.calc_stats
    # Do something spiffy with the model here
    "Finished!"
  end
end

  desc "Example of calling a model"
  task(:calcstats => :environment){ p MyModel.calc_stats  }

rake -T cron
(in /Users/linda/example/cron)
rake cron:dummy        # Just what Date is it really
rake cron:calcstats    # Example of calling a model

rake RAILS_ENV=production cron:calcstats
(in /Users/linda/example/cron)
"Finished!"

cd /path/to/rails/app && /opt/csw/bin/rake cron:dummy

cd /path/to/rails/app && /opt/csw/bin/rake RAILS_ENV=production cron:calcstats

#/etc/network/interfaces
# The loopback network interface
auto lo
iface lo inet loopback
#iface eth0 inet dhcp
# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.1.180
network 192.168.1.0
netmask 255.255.255.0
gateway 192.168.1.1

#/etc/resolv.conf
nameserver 202.106.0.20
nameserver 202.106.195.68
nameserver 202.106.46.151
search localhost