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(base) wangyoujundeMacBook-Air:~ jerry$ tldr -h
usage: tldr [-h] [-u] [--download_cache] [-p PLATFORM] [-s SOURCE] [-c] [-r]

Python command line client for tldr

optional arguments:
  -h, --help            show this help message and exit
  -u, --update_cache    Update the cached commands
  --download_cache      Downloads and caches all tldr pages from tldr site
  -p PLATFORM, --platform PLATFORM
                        Override the operating system [linux, osx, sunos,
                        windows, common]
  -s SOURCE, --source SOURCE
                        Override the default page source
  -c, --color           Override color stripping
  -r, --render          Render local markdown files

然后使用 -U 更新一下就好了

(base) wangyoujundeMacBook-Air:~ jerry$ tldr -u
Updated cache for npm (common) from https://raw.githubusercontent.com/tldr-pages/tldr/master/pages
Updated cache for brew (osx) from https://raw.githubusercontent.com/tldr-pages/tldr/master/pages
Updated cache for vim (common) from https://raw.githubusercontent.com/tldr-pages/tldr/master/pages
Updated cache for docker (common) from https://raw.githubusercontent.com/tldr-pages/tldr/master/pages
Updated cache for cd (common) from https://raw.githubusercontent.com/tldr-pages/tldr/master/pages


(base) wangyoujundeMacBook-Air:~ jerry$ tldr docker
# docker

  Manage Docker containers and images.
  More information: <https://docs.docker.com/engine/reference/commandline/cli/>.

- List currently running docker containers:

  docker ps

- List all docker containers (running and stopped):

  docker ps -a

- Start a container from an image, with a custom name:

  docker run --name container_name image

- Start or stop an existing container:

  docker start|stop container_name

- Pull an image from a docker registry:

  docker pull image

- Open a shell inside of an already running container:

  docker exec -it container_name sh

- Remove a stopped container:

  docker rm container_name

- Fetch and follow the logs of a container:

  docker logs -f container_name