03-09-2010
A shell script or software for generating random passwords
Hi,
Is there an shell script/batch file to genarate random passwords which expires after a stipulated time period? Please suggest a software which does this for AIX and windows both else.
Thanks.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
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)
Discussion started by: phil_heath
9 Replies
2. Programming
Hi,
How can we generate 16 digit random nos in C. (10 Replies)
Discussion started by: ajaysahoo
10 Replies
3. Programming
Im new to C, and Im having a hard time getting a random number.
In bash, I would do something similar to the following to get a random number;
#!/bin/bash
seed1=$RANDOM
seed2=$RANDOM
seed3=$RANDOM
SEED=`expr $seed1 * $seed2 / $seed3`
echo ${SEED%.*}
Now, in online examples... (4 Replies)
Discussion started by: trey85stang
4 Replies
4. Windows & DOS: Issues & Discussions
Hi,
Is there a batch file or any software to genarate random passwords and the passwords expire automatically after a stipulated time period.
Please suggest. (1 Reply)
Discussion started by: dwiravi
1 Replies
5. UNIX for Dummies Questions & Answers
Hi,
Is there a shell script or any software to genarate random passwords and the passwords expire automatically after a stipulated time period.
Please suggest. (2 Replies)
Discussion started by: dwiravi
2 Replies
6. Shell Programming and Scripting
Hi there I am trying to generate a random number between 40 and 70 using the shell here is my code so far and it keeps going above 70. all help much appreciated!
comp=$(( RANDOM%70+40 ))
echo $comp (4 Replies)
Discussion started by: faintingquiche
4 Replies
7. Shell Programming and Scripting
Hi Friends,
I need a quick help in unix scripts,
my aim is to generate random passwords like,
1. first 3 characters are alphabets or numbers
2. then one of special characters like &()/?:;+-
3. Last 4 characters are alphabets or numbers
total length will be 8.
i tried with... (1 Reply)
Discussion started by: Nandy
1 Replies
8. Shell Programming and Scripting
Having a hard time with this. Very new to scripting and linux. Spent all sunday trying to do this. Appreciate some help and maybe help breaking down what the syntax does.
Create a Bash program. It should have the following properties
• Creates a secret number between 1 and 100
i. The... (3 Replies)
Discussion started by: LINUXnoob15
3 Replies
9. Shell Programming and Scripting
Hi,
How can I generate a string of random characters (alpha+numeric) of a particular length ?
For e.g. for
n=5, output = 'kasjf'
n=10, output = 'hedbcd902k'
Also, please let me know if random (valid) dates could also be generated.
Thanks (7 Replies)
Discussion started by: rishigc
7 Replies
10. Shell Programming and Scripting
Hi Guys and gals...
As you know I am getting to grips with POSIX and hit this stumbling block.
Generating two random numbers 0 to 255 POSIXly. Speed in not important hence the 'sleep 1' command.
I have done a demo that works, but it sure is ugly! Is there a better way?
#!/bin/sh
# Random... (12 Replies)
Discussion started by: wisecracker
12 Replies
rand(3C) rand(3C)
NAME
rand(), rand_r(), srand() - simple random-number generator
SYNOPSIS
DESCRIPTION
uses a multiplicative, congruential, random-number generator with period 2^32 that returns successive pseudo-random numbers in the range
from 0 to 2^15-1.
can be called at any time to reset the random-number generator to a random starting point. The generator is initially seeded with a value
of 1.
returns a random number at the address pointed to by the randval parameter. The seed parameter can be set at any time to start the random-
number generator at an arbitrary point.
Note
The spectral properties of leave a great deal to be desired. provides a much better, though more elaborate, random-number generator (see
drand48(3C)).
RETURN VALUE
If seed or randval is NULL, returns 0. Otherwise, returns a psuedo-random integer.
EXAMPLES
The following:
int x, y;
srand(10);
x = rand();
y = rand();
would produce the same results as:
int x, y, s = 10;
x=rand_r(&s);
y=rand_r(&s);
WARNINGS
Users of should note that rand_r() now conforms with POSIX.1c. The old prototype of is supported for compatibility with existing DCE
applications only.
SEE ALSO
drand48(3C), random(3M), thread_safety(5), random(7).
STANDARDS CONFORMANCE
rand(3C)