Linux下生產隨機字符

Linux下生產隨機字符 #!/bin/sh www.2cto.com alphabeta="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" number="0 1 2 3 4 5 6 7 8 9" A=($alphabeta) # save as array N=($number) num_a=${#A } num_n=${#N } echo ${A[$((RANDOM%num_a))]}${N[$((RANDOM%num_n))]}