In awk, the rand() function is seeded with the actual system epoch time, and srand() "returns the value of the previous seed" (c.f. man awk). No need to supply an external datetimestamp. Try this
Hi all,
I've a shell script which runs on Bourne shell. I've to do a date comparison. If the value of the supplied parameter(in format YYYYMMDD)is greater than todays's date(format YYYYMMDD), it should prompt the user that the supplied date is greater than today's date. The script is given... (6 Replies)
Hi
I have this simple script:
#!/bin/bash
date1=2009:07:15:12:36
date2=2009:07:15:12:16
echo $date1
echo $date2
datediff=
#datediff=date1-date2
echo datediff is$datediff
How do i return the difference in seconds? (6 Replies)
1. The problem statement, all variables and given/known data:
I have standard web server log file. It contains different columns (like IP address, request result code, request type etc) including a date column with the format .
I have developed a log analysis command line utility that displays... (1 Reply)
Date comparison
Hello all
I am writing a scrip that will take action so long as the date with in the file is older than 3 months. The file will contain multiple rows of data. Each row will probably start with the date. My question... What is the exact code that should be used for date... (1 Reply)
Hi friends,
I would like to compare two dates in an IF statement.
This is what I am trying, but it doesn't work.
date=20120122
minus=6
if ; then
...
fi
what would the IF clause looks like?
Thanks! :) (5 Replies)
hi,
I have a file named user.cfg under /var/member/
#user.cfg file under /var/member/
login user: root #how are you
login pass: admin #where are you
M: user1 pass1 #20121008
M: user2 pass2 #20111230
M: user3 pass3 #20091220
M: user4 pass4 #20070210
M: user5 pass5 #20130708
M:... (3 Replies)
Hi
Need some function or step to compare the date as given below.
Example:
Date_1: 25/04/2013
Date_2: 20/07/2012
if Date_1 is greater than Date_2 then
do...
else
do..
fi
Need exact unix steps to compare the above condition
Use code tags please, see PM. (5 Replies)
I have below txt file
02.05.2014
10.05.2014
17.09.2014
My requirement is the user enter date field should compare the input file
if user enter date as 12.03.2013 it should compare with all date one by one from input file
12.03.2013 -ne 02.05.2014
12.03.2013 -ne 10.05.2014... (3 Replies)
Discussion started by: stew
3 Replies
LEARN ABOUT OPENSOLARIS
rand_r
rand(3C) Standard C Library Functions rand(3C)NAME
rand, srand, rand_r - simple random-number generator
SYNOPSIS
#include <stdlib.h>
int rand(void);
void srand(unsigned int seed);
int rand_r(unsigned int *seed);
DESCRIPTION
The rand() function uses a multiplicative congruential random-number generator with period 2^32 that returns successive pseudo-random num-
bers in the range of 0 to RAND_MAX (defined in <stdlib.h>).
The srand() function uses the argument seed as a seed for a new sequence of pseudo-random numbers to be returned by subsequent calls to
rand(). If srand() is then called with the same seed value, the sequence of pseudo-random numbers will be repeated. If rand() is called
before any calls to srand() have been made, the same sequence will be generated as when srand() is first called with a seed value of 1.
The rand_r() function has the same functionality as rand() except that a pointer to a seed seed must be supplied by the caller. If
rand_r() is called with the same initial value for the object pointed to by seed and that object is not modified between successive calls
to rand_r(), the same sequence as that produced by calls to rand() will be generated.
The rand() and srand() functions provide per-process pseudo-random streams shared by all threads. The same effect can be achieved if all
threads call rand_r() with a pointer to the same seed object. The rand_r() function allows a thread to generate a private pseudo-random
stream by having the seed object be private to the thread.
USAGE
The spectral properties of rand() are limited. The drand48(3C) function provides a better, more elaborate random-number generator.
When compiling multithreaded applications, the _REENTRANT flag must be defined on the compile line. This flag should be used only in mul-
tithreaded applications.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO drand48(3C), attributes(5), standards(5)SunOS 5.11 19 May 2004 rand(3C)