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Octave
help -i rand
gives help.
rand (N, M)
Return a matrix with
random elements uniformly
distributed on the
interval (0, 1).
There are several other useful routines, such as randn (sample
from normal),
discrete_rnd (sample from a discrete distribution),
binomial_rnd (sample from binomial),
and randperm.
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R
Random {base} manual page
You can generate directly from a Binomial distribution
with parameters N, f using
rbinom(T,N,f)
which returns
T draws from the distribution.
To simulate T tosses of a single coin, and
obtain the list of all T outcomes, use:
rbinom(T,1,f)
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Perl
rand() gives a random number
between 0 and 1.
#!/usr/bin/perl
$seed = 123;
srand($seed); # initial seed
for ($x=0;$x<10;$x++) {
print rand() . "\n";
}
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shell
echo $RANDOM
From man bash:
RANDOM Each time this parameter is referenced, a random integer
between 0 and 32767 is generated. The sequence of random numbers
may be initialized by assigning a value to RANDOM. If RANDOM is
unset, it loses its special properties, even if it is subsequently
reset.
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