Running a rand or random script
I need to run a script, perhaps using FBSD's 'rand' or 'random' command (or any other) that will generate one single 5-digit number 'at random' between 1-9 Anyone have thoughts on how to do this?? Many thanks for any suggestions. Best regards, Jack L. Stone, Administrator SageOne Net http://www.sage-one.net [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Running a rand or random script
On Mon, Jun 16, 2003 at 11:15:17AM -0500, Jack L. Stone wrote: I need to run a script, perhaps using FBSD's 'rand' or 'random' command (or any other) that will generate one single 5-digit number 'at random' between 1-9 Anyone have thoughts on how to do this?? perl -e 'printf %0.5d\n, int(rand(9) + 1);' Assuming that range is inclusive. Cheers, Matthew Nb. Don't use srand() explicitly --- perl will auto-seed the PRNG from /dev/urandom if left to it's own devices. -- Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way PGP: http://www.infracaninophile.co.uk/pgpkey Marlow Tel: +44 1628 476614 Bucks., SL7 1TH UK pgp0.pgp Description: PGP signature
Re: Running a rand or random script
Hi,
I need to run a script, perhaps using FBSD's 'rand' or 'random' command (or
any other) that will generate one single 5-digit number 'at random' between
1-9
Anyone have thoughts on how to do this??
Don't know about a shell way to do this, but what about this tiny
C program (compile and link with gcc -c -o r.o gcc -or r.o)
#include stdlib.h
#include time.h
int main (int argc, char *argv[]) {
srandomdev();
/* use this on non-BSD systems:
srandom(time (0));
*/
unsigned int r = random () % 9 +1;
printf (%d\n, r);
return r;
}
Cheers,
Simon
___
[EMAIL PROTECTED] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Running a rand or random script
jot -r 5 0 9 | rs -g 0 5 -- Barry Byrne, IT Manager, WBT Systems, Block 2, Harcourt Centre Harcourt Street, Dublin 2, Ireland -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Jack L. Stone Sent: 16 June 2003 17:15 To: [EMAIL PROTECTED] Subject: Running a rand or random script I need to run a script, perhaps using FBSD's 'rand' or 'random' command (or any other) that will generate one single 5-digit number 'at random' between 1-9 Anyone have thoughts on how to do this?? Many thanks for any suggestions. Best regards, Jack L. Stone, Administrator SageOne Net http://www.sage-one.net [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Running a rand or random script
At 05:32 PM 6.16.2003 +0100, Matthew Seaman wrote: On Mon, Jun 16, 2003 at 11:15:17AM -0500, Jack L. Stone wrote: I need to run a script, perhaps using FBSD's 'rand' or 'random' command (or any other) that will generate one single 5-digit number 'at random' between 1-9 Anyone have thoughts on how to do this?? perl -e 'printf %0.5d\n, int(rand(9) + 1);' Assuming that range is inclusive. Cheers, Matthew Nb. Don't use srand() explicitly --- perl will auto-seed the PRNG from /dev/urandom if left to it's own devices. -- Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks Savill Way Matthew: Your one-liner is just exactly what I needed. THANKS! Best regards, Jack L. Stone, Administrator SageOne Net http://www.sage-one.net [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Running a rand or random script
Whoops, did too much C++ programming these days, in C this should really
be:
#include stdlib.h
#include time.h
int main (int argc, char *argv[]) {
unsigned int r;
srandomdev();
/* use this on non-BSD systems:
srandom(time (0));
*/
r = random () % 9 +1;
printf (%d\n, r);
return r;
}
___
[EMAIL PROTECTED] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to [EMAIL PROTECTED]
