#!/usr/bin/perl
sub randomPassword {
my $password;
my $_rand;
my $password_length = $_[0];
if (!$password_length) {
$password_length = 10;
}
my @chars = split(" ",
"a b c d e f g h i j k l m n o
p q r s t u v w x y z A B C D
E F G H I J K L M N O P Q R S
T U V W X Y Z - _ % # | 0 1 2
3 4 5 6 7 8 9 ! ? $ @");
srand;
for (my $i=0; $i <= $password_length ;$i++) {
$_rand = int(rand 71);
$password .= $chars[$_rand];
}
return $password;
}
print "\n\nRandom Password = ", randomPassword(9);
print "\n\n";
This User Gave Thanks to DraconianTimes For This Post:
How to generate a random integer with specific range(for example, from 1 to 1000)?
Also, how to convert a floating point number into a integer? (2 Replies)
I need a function to generate a random alphanumeric password in C code. It needs to be between 6-8 characters and follow the following rules:
Reject if same char appears # time: 4 or more
Reject if same char appears consecutively: 3 or more
I have the following random password working for... (2 Replies)
Hi, Guz!
I'm working on a scripts compiler which needs a function to generate random strings. I think REGX may be a good solution to restrict the string format. Before DIYing I'd like asking for any existing libs or codes.
Any help will be appreciated! (7 Replies)
I saw this formula to generate random number between two specified values in shell script.the following.
$(((RANDOM%(max-min+divisibleBy))/divisibleBy*divisibleBy+min))
Give a example in book.
Generate random number between 6 and 30.like this.
$(((RANDOM%30/3+1)*3))
But I have a... (1 Reply)
Hi
I am new to expect. Please if any one can help on my issue its really appreciable. here is my issue:
I want expect script for random passwords and random commands generation.
please can anyone help me?
Many Thanks in advance (0 Replies)
hi guys,
I am writing a c program that generates a two dimensional array to make matrix and a vector of random numbers and perform multiplication. I can't figure out whats wrong with my code. It generates a matrix of random numbers but all the numbers in the vector array is same and so is the... (2 Replies)
i want to generate a random number through a script, and even if anyone reads the script, they wont be able to figure out what the random number is. only the person who setup the script would know it.
something like this could work: random
the full thread is here:
... (13 Replies)
Need to use dd to generate a large file from a sample file of random data. This is because I don't have /dev/urandom.
I create a named pipe then:
dd if=mynamed.fifo do=myfile.fifo bs=1024 count=1024
but when I cat a file to the fifo that's 1024 random bytes:
cat randomfile.txt >... (7 Replies)
Hi,
Is anybody experience generate a pair of random number by using awk command?
I wanna to generate a pair of random number (range from 1 to 4124) and repeats it 416 times.
Desired output
2 326
123 1256
341 14
3245 645
.
.
.
I did write the below command:
awk... (5 Replies)
Discussion started by: perl_beginner
5 Replies
LEARN ABOUT PHP
srand
SRAND(3) 1 SRAND(3)srand - Seed the random number generatorSYNOPSIS
void srand ([int $seed])
DESCRIPTION
Seeds the random number generator with $seed or with a random value if no $seed is given.
Note
As of PHP 4.2.0, there is no need to seed the random number generator with srand(3) or mt_srand(3) as this is now done automati-
cally.
PARAMETERS
o $seed
- Optional seed value
RETURN VALUES
No value is returned.
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 4.2.0 | |
| | |
| | The $seed becomes optional and defaults to a |
| | random value if omitted. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
srand(3) example
<?php
// seed with microseconds
function make_seed()
{
list($usec, $sec) = explode(' ', microtime());
return (float) $sec + ((float) $usec * 100000);
}
srand(make_seed());
$randval = rand();
?>
SEE ALSO rand(3), getrandmax(3), mt_srand(3).
PHP Documentation Group SRAND(3)