CRT command keys

base source

 curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

epel source

curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

yum source

yum-config-manager --add-repohttp://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

yum-utils

yum install -y yum-utils

jps

sudo yum install java-1.8.0-openjdk-devel.x86_64

Turn off the firewall

systemctl stop firewalld

Turn off the firewall

systemctl disable firewalld.service

docker command prompt

sudo yum install -y bash-completion

docker container installation ip command

apt update && apt install -y iproute2

Install the necessary tools

yum install wget net-tools telnet tree nmap sysstat lrzsz dos2unix bind-utils -y

docker deletes all non-running images

for i in `docker ps -a|grep -i exit|awk '{print $1}'`;do docker rm -f $i;done

docker delete unreferenced images

docker image prune -a -f

docker stops all images

docker stop $(docker ps -aq)

docker deletes the creat state image

docker container rm