```bash #!/usr/bin/env bash while read line do user=`echo $line |awk -F":" '{print $1}'` shell=`echo $line |awk -F":" '{print $NF}'` if [ "$shell" = "/bin/bash" -a "$user" != "root" ];then userdel -r $user if [ $? -eq 0 ];then echo "$user is deleted success" let i++ fi fi done < /etc/passwd echo "total: $i" ```