01-05-2011
Need specialized random string generator script
Hi,
I need a script that will generate a set of random strings in sequence, with the ability to predetermine the length, quantity, and alphabet of individual string, and to use the outputs of earlier strings in the sequence to define the parameters of later strings. For examples, I might want to generate a one-character string with an alphabet of {1,2,3,4}, followed by X one-character strings with the alphabet {0,1}, where X equals the output of the first string. Unfortunately I don't know too much about code -- I'm not a programmer, this is for a sociolinguistics project -- but if anyone has any relatively easy ideas as to how to make this happen I'd much appreciate it.
Thanks
V
9 More Discussions You Might Find Interesting
1. Solaris
I am trying to find a way to generate random numbers within a shell script.
Does Solaris have a utility that will generate random numbers?
Thanks in advance.
B (3 Replies)
Discussion started by: one_ring99
3 Replies
2. Shell Programming and Scripting
Hi,
I need to create a table with random sentences. I need lines that are upto 1000 characters in lenght. I need a random sentence generator that will create sentences and output it to a text file. The sentences should be of lenght varying from 1 to 1000.
Does anyone know how this can be... (7 Replies)
Discussion started by: kaushys
7 Replies
3. Shell Programming and Scripting
Hello,
in my shell script i have some multi-line text in a variable $TEMP - f.e.
blablahblah
blah blah
bla TARGET hgloglo
And i need to replace TARGET with text from another variable ($REPLACE), which is containing some text with nasty characters (\n, ", :, etc.) And stuff the altered text... (2 Replies)
Discussion started by: MilanCZ
2 Replies
4. Ubuntu
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)
Discussion started by: vanid
0 Replies
5. UNIX for Dummies Questions & Answers
There was an upload recently on generating a pseudo-random file when /dev/random does NOT exist.
This does not need /dev/random, /dev/urandom or $RANDOM either...
(I assume $RANDOM relies on the /dev/random device in some way.)
This code uses hexdump just because I like hexdump for ease of... (2 Replies)
Discussion started by: wisecracker
2 Replies
6. Shell Programming and Scripting
I need a script to process the (space-separate) values for each line as seen in the below input file and then output the data into an output file as follows. We have been unable to create this using typical bash scripting and cold not find anything out on the internet similar to what we are trying... (3 Replies)
Discussion started by: ddirc
3 Replies
7. Shell Programming and Scripting
I have been (unsuccessfully) trying to write a script that will do the following:
for each line of an input file (that contains IP address),
the script searches the target file for any lines containing said IP address
if it finds a line (or lines) it writes the line(s) to output
if the line is... (4 Replies)
Discussion started by: ddirc
4 Replies
8. Shell Programming and Scripting
Dear UNIX Friends,
I was wondering if there is a random RGB color generator or any function in any unix platforms.
Please share your ideas.
Thanks (2 Replies)
Discussion started by: jacobs.smith
2 Replies
9. Shell Programming and Scripting
I am using the below to random generate a password but I need to have 2 numeric characters and 6 alphabetic chars
head /dev/urandom | tr -dc A-Za-z0-9 | head -c 8 ; echo ''
6USUvqRB
------ Post updated at 04:43 PM ------
Any Help folks - Can the output be passed onto a sed command to... (9 Replies)
Discussion started by: infernalhell
9 Replies
LEARN ABOUT REDHAT
random
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)