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@7of9

bash > 乱数を得る > シェル変数RANDOMを使う

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動作確認

CentOS 6.5

bashで乱数を得たい。
シェル変数RANDOMを使うと0-32767までの整数が得られる。

int_rand_exec
#!/bin/env bash

for idx in $(seq 1 100)
do
  echo $RANDOM
done

実数の乱数を得たい場合は

real_rand_exec
#!/bin/env bash

MAX_VAL=100.0

for idx in $(seq 1 100)
do
  echo "$RANDOM*$MAX_VAL/32768" | bc -l
done

のようにRANDOMの値を変更すればいい。

Link: こちらが参考になりました。

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Help us understand the problem. What is going on with this article?
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7of9
セブンオブナインです。Unimatrix 01の第三付属物 9の7という識別番号です。Star trek Voyagerの好きなキャラクターです。まとめ記事は後日タイトルから内容がわからなくなるため、title検索で見つかるよう個々の記事にしてます。いわゆるBorg集合体の有名なセリフから「お前たち(の知識)を吸収する。抵抗は無意味だ」。Thanks in advance.

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