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Full Discussion: Random pieces of number
Top Forums Shell Programming and Scripting Random pieces of number Post 302444184 by Tytalus on Wednesday 11th of August 2010 06:20:21 AM
Old 08-11-2010
not the best random, and still hacky, but how about:

Code:
#  x=30;n=234951; while [ $x -gt 0 ]; do y=$(expr \( $RANDOM \* $RANDOM \) % \( $n - 2001 \* $x \) + 1001 ); n=$(($n-$y)); echo $y; x=$(($x-1)); done;echo $n
115320
51912
4445
8766
2573
2351
2379
1523
1850
1436
3091
1531
2184
1942
2571
2049
1817
1685
1915
1758
1356
2592
1634
1355
3023
1499
3191
1021
2965
1464
1753

 

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RANDOM(3P)						     POSIX Programmer's Manual							RANDOM(3P)

PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
random -- generate pseudo-random number SYNOPSIS
#include <stdlib.h> long random(void); DESCRIPTION
Refer to initstate(). COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . IEEE
/The Open Group 2013 RANDOM(3P)
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