Add s3hub command readme

README.md

@@ -13,7 +13,7 @@
 > [!IMPORTANT]  
 > This project is under development. Do not use it in production environments.
 
-The rainbow project is a toolset for managing AWS resources. This project consists of multiple CLI and CloudFormation templates.
+The rainbow project is a toolset for managing AWS resources. This project consists of multiple CLI and CloudFormation templates. This project adopts README-Driven Development. Therefore, while there may be a README, there might not be any code yet. If you have any feedback regarding the README, please write down in the Issues.
 
 ## Supported OS & Go version
 - Linux
@@ -23,6 +23,10 @@ The rainbow project is a toolset for managing AWS resources. This project consis
 
 ## CLI List
 [WIP]
+|Name|README|implementation|Description|
+|:--|:--|:--|:--|
+|[s3hub](./doc/s3hub/README.md)|✅||user-friendly s3 management tool|
+
 
 ## Template List
 [WIP]
@@ -31,7 +35,7 @@ The rainbow project is a toolset for managing AWS resources. This project consis
 This project is licensed under the terms of the MIT license. See the [LICENSE](./LICENSE) file.
 
 ## Contributing
-Contributions are welcome! Please see [CONTRIBUTING.md](./CONTRIBUTING.md), [Code of Conduct](./CODE_OF_CONDUCT.md) for more information. This project incurs costs on AWS, and financial support from you would make it easier to maintain the project. If you wish to provide financial support, please do so through [GitHub Sponsors](https://github.com/sponsors/nao1215)
+Contributions are welcome! Please see [CONTRIBUTING.md](./CONTRIBUTING.md), [Code of Conduct](./CODE_OF_CONDUCT.md), [Principle](./doc/common/principle.md) for more information. This project incurs costs on AWS, and financial support from you would make it easier to maintain the project. If you wish to provide financial support, please do so through [GitHub Sponsors](https://github.com/sponsors/nao1215)
 
 ## GitHub Star History
 Stars from you motivate me to keep going.

doc/common/principle.md

@@ -0,0 +1,22 @@
+## Principle
+### Maintain a Simple Interface
+In the context of the command line interface, the interface consists of arguments, options, and option arguments. Users prefer not to deal with complex commands. Developers should always consider whether it is possible to reduce the number of arguments or options.  
+
+
+### Users: Humans and Computers
+There are two types of users: humans and computers.  
+
+When developers introduce interactive interfaces for humans, they should also provide means for computers to achieve the same objectives. Specifically, design the system to allow achieving goals by executing commands from shell scripts or GitHub Actions.
+
+
+### Don't Stay Silent
+In the book "The UNIX Philosophy," there's a section titled "Avoid unnecessary output." The concept of "Avoid unnecessary output" suggests that unnecessary output should not be produced when a command succeeds. 
+
+While I appreciate this philosophy, I am not fond of applications that produce no logs whatsoever during execution. It makes me uneasy. In situations where the application remains silent for an extended period, especially when the Rainbow project's commands may alter the infrastructure, having logs during the changes is preferable and more user-friendly.
+
+### Prompt for User Confirmation
+Changes to the infrastructure can be irreversible, so it's important to be cautious. Therefore, consider the following points:
+
+- When making irreversible changes, obtain user consent through keyboard input.
+- Provide the option to skip confirmation using the --force (-f) option (computers may find it challenging to interactively provide consent).
+- Allow users to perform a pre-check of the operation with the --dry-run (-n) option.

doc/s3hub/README.md

@@ -0,0 +1,68 @@
+## s3hub - user-friendly s3 management tool
+> [!IMPORTANT]  
+> Not implemented yet.
+
+The s3hub command provides following features:
+- Create a bucket
+- List buckets
+- List contents of a bucket
+- Copy files to a bucket
+- Delete contents from a bucket
+- Delete a bucket
+
+## How to install
+```shell
+go install github.com/nao1215/rainbow/cmd/s3hub@latest
+```
+
+## How to use
+S3hub operates without requiring the 's3://' protocol to be added to the bucket name.
+
+### Create a bucket(s)
+
+```shell
+s3hub mb ${YOUR_BUCKET_NAME}
+```
+
+### List buckets
+```shell
+s3hub ls
+```
+
+### List contents of a bucket
+```shell
+s3hub ls ${YOUR_BUCKET_NAME}
+```
+
+### Copy files to a bucket
+From local to S3:
+```shell
+s3hub cp ${YOUR_FILE_PATH} ${YOUR_BUCKET_NAME}
+```
+
+From S3 to local:
+```shell
+s3hub cp ${YOUR_BUCKET_NAME} ${YOUR_FILE_PATH}
+```
+
+### Delete contents from a bucket
+If you want to delete a specific file(s), use the following command:
+```shell
+s3hub rm ${CONTENT_PATH_IN_BUCKET}
+```
+
+If you want to delete all contents in a bucket, use the wildcard:
+```shell
+s3hub rm ${YOUR_BUCKET_NAME}/*
+```
+
+### Delete a bucket(s)
+```shell
+s3hub rm --recursive ${YOUR_BUCKET_NAME}
+```
+
+### Interactive mode
+You can use the interactive mode by omitting the arguments.
+```shell
+s3hub
+```