Is anyone know some scripts to generate random number without repetition using bash; for example generate 10 different random numbers.
Thanks (8 Replies)
Hi Guys I have a script to find Ranomd numbers. But I want to make the file to produce more random. Could u guys help me plz.
In this Script I have the code that generates random in for loop and the range I have specified in my %chromlength
input and out put will be like this
chrno start end... (3 Replies)
Hi,
I am having trouble with generating random numbers. can this be done with awk?
So I have a file that looks like this:
23 30
24 40
26 34
So column1 is start and column2 is end. I want to generate 3 random #'s between start and stop:
So the output will look like this:
... (9 Replies)
Hi
I'm trying to generate random numbers both in parent process and the child process. But I get the same random number in both processes. Why doesn't it generate different numbers altough I seed random number generator?
Here's my code:
#include <stdio.h>
#include <unistd.h>
#include... (2 Replies)
Hi Can someone help me with this one?
I have string..
(PROC_PROC_ID == 12183) <--PID is dynamic
and i want to replace the PID number with whatever PID from
/opt/hpws/apache32_2/logs/httpd.pid file.
i'm having problem since the PID on the string is dynamic. It may be 2-5 digits or more.
... (5 Replies)
Hi,
Do anybody knows how to use awk or any command to random print out 1000 number which start from range 1 to 150000?
I know that "rand" in awk can do similar random selection.
But I have no idea how to write a code that can random pick 1000 number from range 1 to 150000 :confused:
... (1 Reply)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
Write a shell script that will take the sum of two random number?
Ex: Random n1 +Random n2 = result
i tries to write it but i had some dufficulties
... (3 Replies)
Hi, I try to explain my problem , I have a file like this:
aasdsaffsc23
scdsfsddvf46567
mionome0001.pdb
asdsdvcxvds
dsfdvcvc2324w
What I need to do is to create 1000 files in which myname line listing a sequence of numbers from 0001 to 1000. So I want to have :
nomefile0001.txt that must... (10 Replies)
I have a file contains thousands of lines. I want to insert n random numbers into each line at
specific position. Like this:
0 22……
1 33……
……
……
I want to insert 3 random numbers from position 2 to 4 into each line.
0 325 22……
1 685 33……
……
……
Please use CODE tags when... (8 Replies)
Discussion started by: hhdzhu
8 Replies
LEARN ABOUT REDHAT
srandom
RANDOM(3) Linux Programmer's Manual RANDOM(3)NAME
random, srandom, initstate, setstate - random number generator.
SYNOPSIS
#include <stdlib.h>
long int random(void);
void srandom(unsigned int seed);
char *initstate(unsigned int seed, char *state, size_t n);
char *setstate(char *state);
DESCRIPTION
The random() function uses a non-linear additive feedback random number generator employing a default table of size 31 long integers to
return successive pseudo-random numbers in the range from 0 to RAND_MAX. The period of this random number generator is very large, approx-
imately 16*((2**31)-1).
The srandom() function sets its argument as the seed for a new sequence of pseudo-random integers to be returned by random(). These
sequences are repeatable by calling srandom() with the same seed value. If no seed value is provided, the random() function is automati-
cally seeded with a value of 1.
The initstate() function allows a state array state to be initialized for use by random(). The size of the state array n is used by init-
state() to decide how sophisticated a random number generator it should use -- the larger the state array, the better the random numbers
will be. seed is the seed for the initialization, which specifies a starting point for the random number sequence, and provides for
restarting at the same point.
The setstate() function changes the state array used by the random() function. The state array state is used for random number generation
until the next call to initstate() or setstate(). state must first have been initialized using initstate() or be the result of a previous
call of setstate().
RETURN VALUE
The random() function returns a value between 0 and RAND_MAX. The srandom() function returns no value. The initstate() and setstate()
functions return a pointer to the previous state array, or NULL on error.
ERRORS
EINVAL A state array of less than 8 bytes was specified to initstate().
NOTES
Current "optimal" values for the size of the state array n are 8, 32, 64, 128, and 256 bytes; other amounts will be rounded down to the
nearest known amount. Using less than 8 bytes will cause an error.
CONFORMING TO
BSD 4.3
SEE ALSO rand(3), srand(3)GNU 2000-08-20 RANDOM(3)