Coding, Linux, Hacking Security, Learning!

java.lang.Math;

int mx = Math.max(2, 3) // return 2

Generating random numbers is simple. Provided as part of the java.util package, the Random class makes it easy to generate numbers. Start by creating an instance of the Random class

// Create an instance of the random class
Random r = new Random();

Now, you must request a number from the generator. Supposing we wanted an integer number, we’d call the nextInt() method.

// Get an integer
int number = r.nextInt();

Often you’ll want numbers to fall in a specific range (for example, from one to ten). We can use the modulus operator to limit the range of the numbers. This will give us the remainder of the number when divided by ten (giving us a range -9 to +9). To eliminate negative numbers, if the number is less than one we’ll add ten to it. This gives us random numbers between one and ten!

// Accept only up to ten
int random_number = number % 10;
if (random_number < 1) random_number = random_number + 10;

Creating random numbers in an application or applet really isn’t that difficult. Just remember to limit the range of your numbers, and to import the java.util.Random class.

you need header

java.util.Random;Random diceRoller = new Random();

 for (int i = 0; i < 10; i++) { int roll = diceRoller.nextInt(6) + 1; System.out.println(roll); 

} 

1) kill your mysqld

2) mysqld_safe –skip-grant-table

3) login as:   mysql  –user=root mysql

4) update mysql.user set password=PASSWORD(‘new-pass’) WHERE User=’root’;

5) flush privileges;

6) exit;

you are done!

strace -f -o my.x  app

login as root:

>mysql  -u root -p

>*******

mysql>GRANT ALL PRIVILEGES ON *.* TO 'cooluser'@'localhost'

             IDENTIFIED BY 'some_pass' WITH GRANT OPTION;

what command to use to find out the size of directory in linux?

//assume u want to know the size of mydir

du -h  mydir | grep mydir$

C-x C-f open a new file

C-x C-s save the current file
C-x C-c exit the emacs (but save files first)

#command line Emacs

emacs -nc

#Open Split Horizonal Window

Ctrl-2

#Open Split Veritcal Window

Ctrl-3

#Maximize Window

Ctrl-0 

Here is the command to start Emacs in mode! since emacs has the worst font!

 in console,

emacs -nc