how do i generate random integer using only shell script

Tags

script, shell, shell script, shell scripts

Top Forums Shell Programming and Scripting how do i generate random integer using only shell script

12-31-2007

Registered User

22, 0

Join Date: Sep 2007

Last Activity: 8 March 2010, 2:21 AM EST

Posts: 22

Thanks Given: 0

Thanked 0 Times in 0 Posts

how do i generate random integer using only shell script

Hi All,

I need to generate 4 digit random no using only shell script.

Please help in this ASAP.

Thanks in advance...

Regards,
sridhar.

sridhusha

View Public Profile for sridhusha

Find all posts by sridhusha

12-31-2007

Registered User

1,155, 93

Join Date: Dec 2007

Last Activity: 28 December 2019, 12:50 PM EST

Posts: 1,155

Thanks Given: 5

Thanked 93 Times in 90 Posts

Code:

echo $RANDOM

it might be larger then 4 digits so you will have to add logic to do what you need.

frank_rizzo

View Public Profile for frank_rizzo

Find all posts by frank_rizzo

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. OS X (Apple)

Generate a random number in a fully POSIX compliant shell, 'dash'...

Hi all... Apologies for any typos, etc... This took a while but it didn't beat me... Although there are many methods of generating random numbers in a POSIX shell this uses integer maths and a simple C source to create an executable to get epoch to microseconds accuracy if it is needed. I take...

2. Shell Programming and Scripting

Perl inserting random negative integer

Hi All, i have problem here whenever i run this perl script that is pasted here, it inserts a negative number in place of PO_nbr . What the script does is reads a pipe delimited file and then using some values on the file it will query db to get few other values and then it inserts the...

3. Shell Programming and Scripting

Need to generate a file with random data. /dev/[u]random doesn't exist.

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 >...

4. Shell Programming and Scripting

Generate random numbers in script

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: ...

5. Shell Programming and Scripting

generate random base 16

How would you use bash to generate a random 32 digit number base 16? Like this one: 0cc06f2fa0166913291afcb788717458

6. Programming

Generate random number

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...

7. Shell Programming and Scripting

shell script to auto process ten random files and generate logs

Hello member's I'm learning to script in the ksh environment on a Solaris Box. I have 10 files in a directory that I need to pass, as input to a batch job one by one. lets say, the files are named as follows: abcd.txt ; efgh.bat ; wxyz.temp etc. (random filenames with varied extensions )....

8. Programming

Generate Random Password in C

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...

9. Shell Programming and Scripting

Generate a random password

Hello All... Can someone help me generate a random password which will be 7 characters long which contains alpha-numeric characters using shell script. I am looking to store the output of the script that generates the password to a variable within a script and use it as the password. ...

10. Shell Programming and Scripting

generate random number in korn shell

I want to be able to generate a random number within a korn shell script.. Preferably i would like to be able to state how many digits should be in this random number... ie 4 digits or 5 digits etc Any ideas?

Shell Programming and Scripting