centos7 mounting docker recording command completion +

Originally deployed with centos6.6 project environment, suddenly want to install docker, found using uname -r kernel version is too low, the kernel update after the restart ~~~~~ get up, or go back to 7 bar

 

21 yum -y install gcc
22 yum -y install gcc-c++
23 gcc -v
24 yum install -y yum-utils device-mapper-persistent-data lvm2
25 yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
26 yum makecache fast
27 yum -y install docker-ce
28 chkconfig docker on
29 systemctl docker start
30 systemctl start docker
31 chkconfig docker on
32 docker -v
33 history

 

自动补全：
yum install -y bash-completion

source /usr/share/bash-completion/bash_completion

source /usr/share/bash-completion/completions/docker