使用bash产生n位的随机数。测试中为产生8位。
#!/bin/bash
# -------------------------------
# Filename: test.sh
# Revision: 1.0
# Date: 2013-08-01
# Author: simonzhang
# Email: simon-zzm@163.com
# Description:
# -------------------------------
function randnum()
{
di=(0 1 2 3 4 5 6 7 8 9 \
a b c d e f g h i j k l m n o p q r s t u v w x y z \
A B C D E F G H I G K L M N O P Q R S T U V W X Y Z \
~ ! ^ _)
for(( i=0; i<$1; i++))
do
num=$num`echo -n ${di[$RANDOM % ${#di[*]}]}`
done
echo $num
}
get=$(randnum 8)
echo $get