重击从列表中选择随机字符串 [英] Bash select random string from list

问题描述

我有一个字符串列表，我想在每次启动脚本时随机选择其中一个.

I have a list of strings that I want to select one of them at random each time I launch the script.

例如

SDF_BCH_CB="file1.sdf"
SDF_BCH_CW="file2.sdf"
SDF_BCH_RCB="file3.sdf"
SDF_BCH_RCW="file4.sdf"
SDF_TT="file5.sdf"

然后我想从上面的列表中随机选择以分配以下两个变量.

Then I want to be randomly select from the above list to assign the following two variables.

SDFFILE_MIN=$SDF_BCH_CW
SDFFILE_MAX=$SDF_TT

我该怎么做?

谢谢

推荐答案

存储在数组中，计数并随机选择:

Store in array, count and random select:

#!/bin/bash
array[0]="file1.sdf"
array[1]="file2.sdf"
array[2]="file3.sdf"
array[3]="file4.sdf"

size=${#array[@]}
index=$(($RANDOM % $size))
echo ${array[$index]}

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