Shell脚本随机生成八位密码

 #!/bin/bash
 x=abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
 for i in {1..8}
 do
 num=$[RANDOM%62]
 tmp=${x:num:1}
 pass=${pass}$tmp
 done
 echo $pass
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