1.docker exec介绍

docker exec命令是用来在运行中的容器运行命令

2.docker exec用法

docker exec [参数]

[root@centos79 ~]# docker exec --helpUsage:  docker exec [OPTIONS] CONTAINER COMMAND [ARG...]Execute a command in a running containerAliases:docker container exec, docker execOptions:-d, --detach               Detached mode: run command in the background--detach-keys string   Override the key sequence for detaching a container-e, --env list             Set environment variables--env-file list        Read in a file of environment variables-i, --interactive          Keep STDIN open even if not attached--privileged           Give extended privileges to the command-t, --tty                  Allocate a pseudo-TTY-u, --user string          Username or UID (format: "<name|uid>[:<group|gid>]")-w, --workdir string       Working directory inside the container
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