Unix: How Random Is Random?
On Unix systems, random numbers are generated in a number of ways and random data can serve many purposes. From simple commands to fairly complex processes, the question “How random is random?” is worth asking.
EZ random numbers
If all you need is a casual list of random numbers, the RANDOM variable is an easy choice. Type "echo $RANDOM" and you'll get a number between 0 and 32,767 (the largest number that two bytes can hold).
$ echo $RANDOM 29366
Of course, this process is actually providing a "pseudo-random" number.
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