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Top Forums Shell Programming and Scripting How to generate 10.000 unique numbers? Post 302458583 by jim mcnamara on Friday 1st of October 2010 07:19:28 AM
Old 10-01-2010
straight shell arithmetic handles numbers up to 4294967291. The shell random number generator gives values between 1 - 32767. This is a hack using bc - a calculator
Code:
cnt=0
while [[ $cnt -lt 10000 ]]
do
 echo "$RANDOM * $RANDOM * $RANDOM"
 cnt=$(( $cnt + 1 ))
 if [[ $cnt -gt 10000 ]] ; then  
    break
 fi
done | bc -l

Pretty much anything else will require some kind of non-shell appoach - perl, ruby, C....
This User Gave Thanks to jim mcnamara For This Post:
 

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scsi_setup_cdb(9F)					   Kernel Functions for Drivers 					scsi_setup_cdb(9F)

NAME
scsi_setup_cdb - setup SCSI command descriptor block (CDB) SYNOPSIS
int scsi_setup_cdb(union scsi_cdb *cdbp, uchar_t cmd, uint_t addr, uint_t cnt, uint_t othr_cdb_data); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). PARAMETERS
cdbp Pointer to command descriptor block. cmd The first byte of the SCSI group 0, 1, 2, 4, or 5 CDB. addr Pointer to the location of the data. cnt Data transfer length in units defined by the SCSI device type. For sequential devices cnt is the number of bytes. For block devices, cnt is the number of blocks. othr_cdb_data Additional CDB data. DESCRIPTION
scsi_setup_cdb() function initializes a group 0, 1, 2, 4, or 5 type of command descriptor block pointed to by cdbp using cmd, addr, cnt, othr_cdb_data. addr should be set to 0 for commands having no addressing information (for example, group 0 READ command for sequential access devices). othr_cdb_data should be additional CDB data for Group 4 commands; otherwise, it should be set to 0. scsi_setup_cdb() function does not set the LUN bits in CDB[1] as the makecom(9F) functions do. Also, the fixed bit for sequential access device commands is not set. RETURN VALUES
scsi_setup_cdb() returns: 1 Upon success. 0 Upon failure. CONTEXT
These functions can be called from a user or interrupt context. SEE ALSO
makecom(9F), scsi_pkt(9S) Writing Device Drivers American National Standard Small Computer System Interface-2 (SCSI-2) American National Standard SCSI-3 Primary Commands (SPC) SunOS 5.10 23 Jun 1997 scsi_setup_cdb(9F)
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