抽奖软件

下载地址:lucky

1.无需注册,背景更换back.jpg即可

2.程序可支持串口外接工业按钮实现无键盘摇奖,具体可用邮件与我取得联系:superjwl[at]gmail.com

 

postgresql backup and resotre

backup:

pg_dump -h [HOST_ADDRESS] -p [PORT] -U [USER] [DBNAME] > [BAK_FILE]

restore:

psql  -h [HOST_ADDRESS] -p [PORT] -U [USER] [DBNAME] < [BAK_FILE]

 

Mercurial不同机器间的快速同步

1.在一台机器上的某个mercurial管理的源代码目录的.hg目录下找到hgrc
2.编辑hgrc文件,加入如下内容:
[web]
allow_read = *
allow_push = *
push_ssl = false

3.在此源代码目录选择命令:hg serve -p 80

完成后就可以在另一台机器push,pull了,
远程地址为:http://主机

多个私钥登录不同服务器时的配置

首先把不同的私钥放在.ssh目录中,并把这些私钥文件的权限改为600

比如有两个私钥文件:

id_rsa.1

id_rsa.2

然后在.ssh目录下建立config文件,内容为:

Host 1.com
    IdentityFile ~/.ssh/id_rsa.1
    User user1   

Host 2.com
    IdentityFile ~/.ssh/id_rsa.2
    User user2

之后就可以用 ssh user1@1.com 和 ssh user2@2.com 来登录不同的服务器了

windows下mysql中文乱码解决方法之一

按如下内容改为my.ini:

 

default-character-set=latin1 改为 default-character-set=utf8

character-set-server=latin1 改为 character-set-server=utf8

Android软件推荐-随手写Freenote

一直在寻找一款很方便的笔记软件,用过Evernote,Catch Note,虽然功能多,但使用下来后,实际感觉不方便,

是否有一款软件可以像一张纸,一支笔这么方便的随意画、写呢,

终于发现了,“随手写”,

可以充当纸和笔的角色,

具有多种输入方式:键盘输入、经典手写、双格手写、自由涂鸦等,

还可以插入声音,视频等,相当方便,各大市场都可以下载到

值得一试

 

不过要使用此软件,你的手机屏幕是越大越好,最好4.3以上,三星note,android平板更好,

How to flash DM500 using telnet

 

To flash an image using Telnet
This method will only work with a .img image file.
* Rename the image file to backup.img
* FTP the image file to the /tmp folder on the dreambox
* Telnet to your box and paste the following command:
cd /tmp && eraseall /dev/mtd/3 && cp backup.img /dev/mtd/3 && reboot
To telnet, click START > RUN and type Telnet ip.address.of.dreambox A command window will appear, enter username root and password dreambox.
To backup an image using Telnet
* Telnet to the box and paste the following command:
cat /dev/mtd/3 > /tmp/backup.img
* FTP to the box and navigate to the /tmp
* Here you will find the backup.img file.
How to copy an image from your PC to the Dreambox via Telnet
First of all, you need to have a mounted directory from your PC. Make sure you have the image.img file in your mounted directory on your PC. Telnet to the dreambox and paste this command:
cp /hdd/movie/image.img /tmp/image.img
The img will be copied from your mounted directory to the /tmp folder on the dreambox ready to be flashed.

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post’s original address: http://www.digital-kaos.co.uk/forums/f213/how-flash-dm500-using-telnet-163444/

mssql查看某个表被哪些外键约束引用

exec sp_helpconstraint @objname=表名
go

java goto

Jumping forward:

label: if (true) {
// do stuff
if (check) break label;
// do more stuff
}

Jumping backward:

label: do {
  // do stuff
  if (check) continue label;
  // do more stuff
  break label;
} while(true);

HibernateTemplate,get,load,delete

在写通用Repository类的deleteById时,如果使用load方法,则能正确删除对象,代码如下:

public void deleteById(PK id) {
    T t = getHibernateTemplate().load(type, id);
    t = (T) getHibernateTemplate().merge(t);
    getHibernateTemplate().delete(t);
}  

而如果使用get方法,则不能删除对象,会出现错误 :java.lang.IllegalArgumentException: Removing a detached instance <ClassName>,代码如下:

public void deleteById(PK id) {
    T t = getHibernateTemplate().get(type, id);
    t = (T) getHibernateTemplate().merge(t);
    getHibernateTemplate().delete(t);
}