This cheat sheet covers the commands used for working with Podman, a popular tool for managing containers. Podman commands are mostly compatible with Docker. As stated on the Podman landing page, "Podman is a daemonless, open source, Linux native tool designed to make it easy to find, run, build, share and deploy applications using Open Containers Initiative (OCI) Containers and Container Images."
# List all local images
podman images
# Remove (forced) a local image from the local cache
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Posted by gregyoung on February 16, 2010
Many people have been getting confused over what CQRS is. They look at CQRS as being an architecture; it is not. CQRS is a very simple pattern that enables many opportunities for architecture that may otherwise not exist. CQRS is not eventual consistency, it is not eventing, it is not messaging, it is not having separated models for reading and writing, nor is it using event sourcing. I want to take a few paragraphs to describe first exactly what CQRS is and then how it relates to other patterns.
Starting with CQRS, CQRS is simply the creation of two objects where there was previously only one. The separation occurs based upon whether the methods are a command or a query (the same definition that is used by Meyer in Command and Query Separation, a command is any method that mutates state and a query is any method that returns a value).
As of IPython 5, readline is no longer used to interpret keystrokes.
Instead, the pure-python library prompt_toolkit is used.
Getting vim mode in IPython is straightforward. First, edit
~/.ipython/profile_default/ipython_config.py
and add the following line:
c.TerminalInteractiveShell.editing_mode = 'vi'