摘要： #!/bin/bash while true do read -ep "创建多少用户" sun for i in `seq 1 $sun` do ab=`cat /dev/urandom | sed 's/[^a-zA-Z0-9]//g'| strings -n 3 | head -n 1` id user_$i > /dev/null 2>&1 if [ $? = 0 ];then echo " 阅读全文