Shell script: genera una contraseña aleatoria de ocho dígitos

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