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    1  df -h
    2  sudo su aml
    3  adduser aml
    4  exit
    5  wall
    6  sudo -i
    7  sudo su
    8  sudo su aml
    9  history 
[ec2-user@ip-172-16-1-150 ~]$ sudo -i
[root@ip-172-16-1-150 ~]# history 
    1  adduser aml
    2  addgroup sudo
    3  groupadd sudo
    4  yum install nano
    5  nano /etc/sudoers
    6  user mod -a -G sudo aml
    7  usermod -a -G sudo aml
    8  exit
    9  mkdir /opt/hadoop
   10  mkdir /opt/spark
   11  mkdir /opt/elasticsearch
   12  mkdir /opt/hbase
   13  chown aml:aml /opt/hadoop
   14  chown aml:aml /opt/spark
   15  chown aml:aml /opt/elasticsearch
   16  chown aml:aml /opt/hbase
   17  exit
   18  yum -y install nano
   19  nano /etc/sysconfig/docker
   20  /etc/init.d/docker restart
   21  history