nirbhayc

/**
  @file producer_consumer.c

  @info A sample program to demonstrate the classic consumer/producer problem
  using pthreads.
*/

#include <stdio.h>
#include <pthread.h>

nirbhayc

/**
  Get server version.
*/

import java.sql.*;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.*;

nirbhayc

#define compile_time_assert(expr)                                            \
do                                                                           \
{                                                                            \
  typedef char compile_time_assert[(expr) ? 1 : -1] __attribute__((unused)); \
} while(0)

nirbhayc

package main

import "fmt"

type myColor string

const (
	RED   myColor = "red"
	GREEN myColor = "green"
	BLUE  myColor = "blue"

nirbhayc

50217 15:49:02 [Note] WSREP: (dc9e817d-b6e5-11e4-a36f-8fe330cf395b, 'tcp://0.0.0.0:4010') turning message relay requesting on, nonlive peers: tcp://192.168.0.8:4030 tcp://192.168.0.8:4040
150217 15:49:03 [Note] WSREP: (dc9e817d-b6e5-11e4-a36f-8fe330cf395b, 'tcp://0.0.0.0:4010') reconnecting to 370a81b6-b6e6-11e4-b985-beb180620fd9 (tcp://192.168.0.8:4030), attempt 0
150217 15:49:03 [Note] WSREP: (dc9e817d-b6e5-11e4-a36f-8fe330cf395b, 'tcp://0.0.0.0:4010') reconnecting to 4ba33092-b6e6-11e4-93a4-ba232dff3484 (tcp://192.168.0.8:4040), attempt 0
150217 15:49:04 [Note] WSREP: evs::proto(dc9e817d-b6e5-11e4-a36f-8fe330cf395b, GATHER, view_id(REG,370a81b6-b6e6-11e4-b985-beb180620fd9,4)) suspecting node: 370a81b6-b6e6-11e4-b985-beb180620fd9
150217 15:49:04 [Note] WSREP: evs::proto(dc9e817d-b6e5-11e4-a36f-8fe330cf395b, GATHER, view_id(REG,370a81b6-b6e6-11e4-b985-beb180620fd9,4)) suspecting node: 4ba33092-b6e6-11e4-93a4-ba232dff3484
...
...
150217 15:49:14 [Note] WSREP: evs::proto(dc9e817d-b6e5-11e4-a36f-8fe330cf395b, G

nirbhayc

$ echo "nirbhay" | cracklib-check 
nirbhay: it is based on your username
$ echo "password" | cracklib-check 
password: it is based on a dictionary word
$ echo "qwerty" | cracklib-check 
qwerty: it is based on a dictionary word
$ echo "123" | cracklib-check 
123: it is WAY too short
$ echo "123456" | cracklib-check 
123456: it is too simplistic/systematic

nirbhayc

MariaDB [test]> INSTALL SONAME 'cracklib_password_check';
Query OK, 0 rows affected (0.05 sec)

MariaDB [test]> SELECT VARIABLE_NAME, DEFAULT_VALUE, VARIABLE_COMMENT FROM INFORMATION_SCHEMA.SYSTEM_VARIABLES WHERE VARIABLE_NAME LIKE 'CRACKLIB_PASSWORD%'\G
*************************** 1. row ***************************
   VARIABLE_NAME: CRACKLIB_PASSWORD_CHECK_DICTIONARY
   DEFAULT_VALUE: /var/cache/cracklib/cracklib_dict
VARIABLE_COMMENT: Path to a cracklib dictionary
1 row in set (0.00 sec)

nirbhayc

MariaDB [test]> INSTALL SONAME 'simple_password_check';
Query OK, 0 rows affected (0.04 sec)

MariaDB [test]> SELECT VARIABLE_NAME, DEFAULT_VALUE, VARIABLE_COMMENT FROM INFORMATION_SCHEMA.SYSTEM_VARIABLES WHERE VARIABLE_NAME LIKE 'SIMPLE_PASSWORD%'\G
*************************** 1. row ***************************
   VARIABLE_NAME: SIMPLE_PASSWORD_CHECK_DIGITS
   DEFAULT_VALUE: 1
VARIABLE_COMMENT: Minimal required number of digits
*************************** 2. row ***************************
   VARIABLE_NAME: SIMPLE_PASSWORD_CHECK_LETTERS_SAME_CASE

nirbhayc

$sudo ngrep -x -q -d lo port 16001
# where,
#   -x          : Dump packet contents as hexadecimal
#   -q          : Be quiet, do not print '#' for every packet received
#   -d <dev>    : Listen to 'dev' interface only
#   port <port> : Print packets with this source or destination port only

interface: lo (127.0.0.0/255.0.0.0)
filter: (ip or ip6) and ( port 16001 )

nirbhayc

/*
  @File : largest_event.go
  @Description : Find the largest event in a binary log file.
  @Usage : ./largest_event.go -file=<binary log file>
*/

package main

import (
	"flag"